### Install Inquire Core and Adapters

Source: https://github.com/stackpress/inquire/blob/main/packages/inquire/README.md

Installs the main Inquire library and specific database adapters for MySQL, PostgreSQL, and SQLite.

```bash
npm install @stackpress/inquire

# For MySQL
npm install @stackpress/inquire-mysql2 mysql2

# For PostgreSQL
npm install @stackpress/inquire-pg pg

# For SQLite
npm install @stackpress/inquire-sqlite3 better-sqlite3
```

--------------------------------

### Install Inquire Core and Adapters

Source: https://github.com/stackpress/inquire/blob/main/README.md

Installs the main Inquire library and specific database adapters for MySQL, PostgreSQL, and SQLite.

```bash
npm install @stackpress/inquire

# For MySQL
npm install @stackpress/inquire-mysql2 mysql2

# For PostgreSQL
npm install @stackpress/inquire-pg pg

# For SQLite
npm install @stackpress/inquire-sqlite3 better-sqlite3
```

--------------------------------

### Insert Data with Inquire

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Shows how to insert single and multiple records into a table, including examples of using the 'returning' clause for PostgreSQL and SQLite.

```typescript
// Insert single record
await engine.insert('users')
  .values({
    name: 'John Doe',
    email: 'john@example.com'
  });

// Insert multiple records
await engine.insert('users')
  .values([
    { name: 'Alice Smith', email: 'alice@example.com' },
    { name: 'Bob Johnson', email: 'bob@example.com' },
    { name: 'Carol Williams', email: 'carol@example.com' }
  ]);

// Insert with returning (PostgreSQL/SQLite)
const newUsers = await engine.insert('users')
  .values({ name: 'Jane Doe', email: 'jane@example.com' })
  .returning('*');
```

--------------------------------

### Blog Application Schema and Data Retrieval

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Provides a real-world example of creating database schemas for a blog application, including 'categories' and 'posts' tables with relationships, indexes, and foreign keys. It also shows how to select published posts with their categories using an inner join and ordering.

```typescript
// Create blog schema
await engine.create('categories')
  .addField('id', { type: 'INTEGER', autoIncrement: true })
  .addField('name', { type: 'VARCHAR', length: 100 })
  .addField('slug', { type: 'VARCHAR', length: 100 })
  .addPrimaryKey('id')
  .addUniqueKey('unique_slug', ['slug']);

await engine.create('posts')
  .addField('id', { type: 'INTEGER', autoIncrement: true })
  .addField('title', { type: 'VARCHAR', length: 255 })
  .addField('slug', { type: 'VARCHAR', length: 255 })
  .addField('content', { type: 'TEXT' })
  .addField('excerpt', { type: 'TEXT' })
  .addField('category_id', { type: 'INTEGER' })
  .addField('published', { type: 'BOOLEAN', default: false })
  .addField('created_at', { type: 'TIMESTAMP', default: 'CURRENT_TIMESTAMP' })
  .addField('updated_at', { type: 'TIMESTAMP', default: 'CURRENT_TIMESTAMP' })
  .addPrimaryKey('id')
  .addUniqueKey('unique_slug', ['slug'])
  .addIndex('idx_category', ['category_id'])
  .addIndex('idx_published', ['published'])
  .addForeignKey('fk_category', {
    local: ['category_id'],
    foreign: { table: 'categories', columns: ['id'] }
  });

// Get published posts with categories
const publishedPosts = await engine.select([
    'p.id',
    'p.title',
    'p.slug',
    'p.excerpt',
    'p.created_at',
    'c.name as category_name',
    'c.slug as category_slug'
  ])
  .from('posts p')
  .innerJoin('categories c', 'p.category_id = c.id')
  .where('p.published = ?', [true])
  .orderBy('p.created_at', 'DESC')
  .limit(10);
```

--------------------------------

### Install @stackpress/inquire-pg

Source: https://github.com/stackpress/inquire/blob/main/packages/inquire-pg/README.md

Installs the '@stackpress/inquire-pg' package using npm. This is the first step to integrate PostgreSQL connectivity with the Inquire library.

```bash
$ npm i @stackpress/inquire-pg
```

--------------------------------

### Basic Database Transactions

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Provides an example of executing multiple database operations within a single transaction. If any operation within the transaction fails, all changes are rolled back. This example inserts a user, their profile, and initial posts.

```typescript
const result = await engine.transaction(async (trx) => {
  // Insert user
  const userResult = await trx.insert('users')
    .values({ name: 'Alice', email: 'alice@example.com' });
  
  // Insert user profile
  await trx.insert('profiles')
    .values({
      user_id: userResult.insertId,
      bio: 'Software developer',
      website: 'https://alice.dev'
    });
  
  // Insert initial posts
  await trx.insert('posts')
    .values([
      {
        user_id: userResult.insertId,
        title: 'Hello World',
        content: 'My first post!'
      },
      {
        user_id: userResult.insertId,
        title: 'About Me',
        content: 'Learn more about me...'
      }
    ]);
  
  return { userId: userResult.insertId, success: true };
});
```

--------------------------------

### Complete Table Creation Example

Source: https://github.com/stackpress/inquire/blob/main/docs/builders/Create.md

A comprehensive example demonstrating the creation of a complex 'blog_posts' table with various field types, constraints, indexes, and foreign keys.

```typescript
await engine.create('blog_posts')
  .addField('id', {
    type: 'INTEGER',
    autoIncrement: true,
    unsigned: true
  })
  .addField('user_id', {
    type: 'INTEGER',
    unsigned: true,
    nullable: false
  })
  .addField('category_id', {
    type: 'INTEGER',
    unsigned: true,
    nullable: true
  })
  .addField('title', {
    type: 'VARCHAR',
    length: 255,
    nullable: false
  })
  .addField('slug', {
    type: 'VARCHAR',
    length: 255,
    nullable: false
  })
  .addField('excerpt', {
    type: 'TEXT',
    nullable: true
  })
  .addField('content', {
    type: 'LONGTEXT',
    nullable: false
  })
  .addField('featured_image', {
    type: 'VARCHAR',
    length: 500,
    nullable: true
  })
  .addField('published', {
    type: 'BOOLEAN',
    default: false
  })
  .addField('views', {
    type: 'INTEGER',
    unsigned: true,
    default: 0
  })
  .addField('created_at', {
    type: 'TIMESTAMP',
    default: 'CURRENT_TIMESTAMP'
  })
  .addField('updated_at', {
    type: 'TIMESTAMP',
    default: 'CURRENT_TIMESTAMP'
  })
  .addPrimaryKey('id')
  .addUniqueKey('unique_slug', ['slug'])
  .addIndex('idx_user_published', ['user_id', 'published'])
  .addIndex('idx_category', ['category_id'])
  .addIndex('idx_created_at', ['created_at'])
  .addForeignKey('fk_user', {
    local: ['user_id'],
    foreign: { table: 'users', columns: ['id'] },
    onUpdate: 'CASCADE',
    onDelete: 'CASCADE'
  })
  .addForeignKey('fk_category', {
    local: ['category_id'],
    foreign: { table: 'categories', columns: ['id'] },
    onUpdate: 'CASCADE',
    onDelete: 'SET NULL'
  });
```

--------------------------------

### Create Tables with Inquire

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Demonstrates how to create tables with primary and unique keys, and how to define foreign key constraints with cascading deletes using the Inquire SQL library.

```typescript
await engine.create('users')
  .addField('id', { type: 'INTEGER', autoIncrement: true })
  .addField('name', { type: 'VARCHAR', length: 255 })
  .addField('email', { type: 'VARCHAR', length: 255 })
  .addField('created_at', { type: 'TIMESTAMP', default: 'CURRENT_TIMESTAMP' })
  .addPrimaryKey('id')
  .addUniqueKey('unique_email', ['email']);

// Table with foreign keys
await engine.create('posts')
  .addField('id', { type: 'INTEGER', autoIncrement: true })
  .addField('user_id', { type: 'INTEGER' })
  .addField('title', { type: 'VARCHAR', length: 255 })
  .addField('content', { type: 'TEXT' })
  .addField('published', { type: 'BOOLEAN', default: false })
  .addPrimaryKey('id')
  .addForeignKey('fk_user', {
    local: ['user_id'],
    foreign: { table: 'users', columns: ['id'] },
    onDelete: 'CASCADE'
  });
```

--------------------------------

### Update Data with Inquire

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Provides examples for updating single or multiple records in a table, including setting new values and applying conditions.

```typescript
// Update single record
await engine.update('users')
  .set({ email: 'newemail@example.com' })
  .where('id = ?', [1]);

// Update multiple fields
await engine.update('users')
  .set({
    name: 'John Smith',
    email: 'johnsmith@example.com',
    updated_at: new Date()
  })
  .where('id = ?', [1]);

// Update with conditions
await engine.update('posts')
  .set({ published: true })
  .where('user_id = ?', [1])
  .where('created_at > ?', [new Date('2024-01-01')]);
```

--------------------------------

### Aggregations with Inquire

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Shows how to perform aggregations like COUNT, MAX, and MIN, and how to use GROUP BY and HAVING clauses to filter aggregated results.

```typescript
// Group by with aggregations
const userStats = await engine.select([
    'user_id',
    'COUNT(*) as post_count',
    'MAX(created_at) as latest_post',
    'MIN(created_at) as first_post'
  ])
  .from('posts')
  .where('published = ?', [true])
  .groupBy('user_id')
  .having('COUNT(*) > ?', [5])
  .orderBy('post_count', 'DESC');
```

--------------------------------

### Select Data with Inquire

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Illustrates various ways to select data, including selecting all columns, specific columns, filtering with WHERE clauses, ordering, limiting results, and performing joins.

```typescript
// Basic select
const allUsers = await engine.select('*').from('users');

// Select specific columns
const userNames = await engine.select(['id', 'name']).from('users');

// Select with conditions
const activeUsers = await engine.select('*')
  .from('users')
  .where('active = ?', [true])
  .where('created_at > ?', [new Date('2024-01-01')]);

// Select with ordering and limiting
const recentUsers = await engine.select('*')
  .from('users')
  .orderBy('created_at', 'DESC')
  .limit(10)
  .offset(20);

// Select with joins
const usersWithPosts = await engine.select([
    'u.id',
    'u.name',
    'u.email',
    'p.title',
    'p.content'
  ])
  .from('users u')
  .leftJoin('posts p', 'u.id = p.user_id')
  .where('u.active = ?', [true]);
```

--------------------------------

### Generic Migration Example

Source: https://github.com/stackpress/inquire/blob/main/docs/dialects/README.md

Presents a generic migration script for creating a 'users' table that is compatible across different database dialects.

```typescript
// Generic migration that works across dialects
await engine.create('users')
  .field('id', { type: 'int', autoIncrement: true })
  .field('name', { type: 'varchar', length: 255 })
  .field('active', { type: 'boolean', default: true })
  .field('data', { type: 'json' })
  .primary('id');
```

--------------------------------

### Complex Joins with Inquire

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Shows how to perform complex queries involving multiple joins with aliases to retrieve data from related tables.

```typescript
// Multiple joins with aliases
const complexQuery = await engine.select([
    'u.id as user_id',
    'u.name as user_name',
    'p.title as post_title',
    'c.content as comment_content',
    'cat.name as category_name'
  ])
  .from('users u')
  .innerJoin('posts p', 'u.id = p.user_id')
  .leftJoin('comments c', 'p.id = c.post_id')
  .leftJoin('categories cat', 'p.category_id = cat.id')
  .where('u.active = ?', [true])
  .where('p.published = ?', [true])
  .orderBy('p.created_at', 'DESC');
```

--------------------------------

### PGLite Schema Creation and Querying

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Demonstrates using PGLite with '@stackpress/inquire-pglite' for in-memory PostgreSQL-like database operations. It includes creating a 'users' table and executing SQL queries with date filtering and ordering.

```typescript
import { PGlite } from '@electric-sql/pglite';
import connect from '@stackpress/inquire-pglite';

// Connection setup (in-memory)
const db = new PGlite();
const engine = connect(db);

// PGLite works like PostgreSQL
await engine.create('users')
  .addField('id', { type: 'SERIAL', primaryKey: true })
  .addField('name', { type: 'VARCHAR', length: 255 })
  .addField('email', { type: 'VARCHAR', length: 255 })
  .addField('created_at', { type: 'TIMESTAMP', default: 'NOW()' });

// All PostgreSQL features work
const users = await engine.sql<User>`
  SELECT * FROM users 
  WHERE created_at > ${new Date('2024-01-01')}
  ORDER BY created_at DESC
`;
```

--------------------------------

### Create Product Schema with Inquire

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Defines a 'products' table schema using the Inquire library. It includes fields for product details, sets primary keys, and adds indexes for efficient querying. This is a foundational step for managing product data.

```typescript
await engine.create('products')
  .addField('id', { type: 'INTEGER', autoIncrement: true })
  .addField('name', { type: 'VARCHAR', length: 255 })
  .addField('description', { type: 'TEXT' })
  .addField('price', { type: 'DECIMAL', precision: 10, scale: 2 })
  .addField('stock_quantity', { type: 'INTEGER', default: 0 })
  .addField('active', { type: 'BOOLEAN', default: true })
  .addField('created_at', { type: 'TIMESTAMP', default: 'CURRENT_TIMESTAMP' })
  .addPrimaryKey('id')
  .addIndex('idx_active', ['active'])
  .addIndex('idx_price', ['price']);
```

--------------------------------

### Subqueries with Inquire

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Demonstrates how to use subqueries within SQL statements, including using template strings for dynamic query construction and type safety.

```typescript
// Using template strings for subqueries
const usersWithPostCount = await engine.sql<{ 
  id: number;
  name: string;
  post_count: number;
}>`
  SELECT 
    u.id,
    u.name,
    (SELECT COUNT(*) FROM posts p WHERE p.user_id = u.id) as post_count
  FROM users u
  WHERE u.active = ${true}
  ORDER BY post_count DESC
`;
```

--------------------------------

### Complex SELECT Query Example

Source: https://github.com/stackpress/inquire/blob/main/docs/builders/Select.md

Provides a comprehensive example of a complex SELECT query using the Inquire builder. This snippet showcases multiple joins, WHERE clauses, GROUP BY, HAVING, ORDER BY, and LIMIT clauses for advanced data retrieval.

```typescript
type PostWithDetails = {
  id: number;
  title: string;
  excerpt: string;
  author_name: string;
  author_email: string;
  category_name: string;
  tag_count: number;
  comment_count: number;
  view_count: number;
  published_at: Date;
  is_featured: boolean;
};

const featuredPosts: PostWithDetails[] = await engine.select<PostWithDetails>([
    'p.id',
    'p.title',
    'p.excerpt',
    'u.name as author_name',
    'u.email as author_email',
    'c.name as category_name',
    'COUNT(DISTINCT pt.tag_id) as tag_count',
    'COUNT(DISTINCT cm.id) as comment_count',
    'p.views as view_count',
    'p.published_at',
    'p.featured as is_featured'
  ])
  .from('posts p')
  .innerJoin('users u', 'p.user_id = u.id')
  .innerJoin('categories c', 'p.category_id = c.id')
  .leftJoin('post_tags pt', 'p.id = pt.post_id')
  .leftJoin('comments cm', 'p.id = cm.post_id AND cm.approved = ?', [true])
  .where('p.published = ?', [true])
  .where('p.published_at <= ?', [new Date()])
  .where('u.active = ?', [true])
  .where('(p.featured = ? OR p.views > ?)', [true, 1000])
  .groupBy('p.id', 'u.name', 'u.email', 'c.name')
  .having('COUNT(DISTINCT pt.tag_id) > ?', [0])
  .orderBy('p.featured', 'DESC')
  .orderBy('p.published_at', 'DESC')
  .orderBy('p.views', 'DESC')
  .limit(20);
```

--------------------------------

### Delete Data with Inquire

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Demonstrates how to delete records from a table based on specific conditions or to delete all records.

```typescript
// Delete specific record
await engine.delete('users')
  .where('id = ?', [1]);

// Delete with multiple conditions
await engine.delete('posts')
  .where('published = ?', [false])
  .where('created_at < ?', [new Date('2023-01-01')]);

// Delete all records (use with caution)
await engine.delete('temp_data');
```

--------------------------------

### Compare Schemas and Generate Migrations

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Shows how to define and compare database schemas to generate migration scripts. This involves creating representations of old and new table structures, including fields, types, constraints, and primary/unique keys, and then diffing them.

```typescript
// Define old schema
const oldSchema = engine.create('users')
  .addField('id', { type: 'INTEGER', autoIncrement: true })
  .addField('name', { type: 'VARCHAR', length: 100 })
  .addPrimaryKey('id');

// Define new schema
const newSchema = engine.create('users')
  .addField('id', { type: 'INTEGER', autoIncrement: true })
  .addField('name', { type: 'VARCHAR', length: 255 })
  .addField('email', { type: 'VARCHAR', length: 255 })
  .addField('created_at', { type: 'TIMESTAMP', default: 'CURRENT_TIMESTAMP' })
  .addPrimaryKey('id')
  .addUniqueKey('unique_email', ['email']);

// Generate migration
const migration = engine.diff(oldSchema, newSchema);
await migration;
```

--------------------------------

### Execute PGLite Queries

Source: https://github.com/stackpress/inquire/blob/main/docs/Connections.md

Provides an example of executing a query against a PGLite database. The query is typed to return an array of 'User' objects.

```typescript
const users = await connection.query<User>({
  query: 'SELECT * FROM users WHERE age > $1',
  values: [18]
});
// Returns User[] from the rows property
```

--------------------------------

### MySQL Schema Creation and Insertion

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Demonstrates how to connect to a MySQL database using 'mysql2/promise' and '@stackpress/inquire-mysql2'. It shows creating a 'users' table with various field types, primary keys, and engine/charset options, followed by inserting data and accessing the last inserted ID.

```typescript
import mysql from 'mysql2/promise';
import connect from '@stackpress/inquire-mysql2';

// Connection setup
const connection = await mysql.createConnection({
  host: 'localhost',
  user: 'root',
  password: 'password',
  database: 'myapp'
});

const engine = connect(connection);

// MySQL-specific features
await engine.create('users')
  .addField('id', { type: 'INT', autoIncrement: true, unsigned: true })
  .addField('name', { type: 'VARCHAR', length: 255, charset: 'utf8mb4' })
  .addField('created_at', { type: 'TIMESTAMP', default: 'CURRENT_TIMESTAMP' })
  .addPrimaryKey('id')
  .engine('InnoDB')
  .charset('utf8mb4');

// Using last insert ID
await engine.insert('users').values({ name: 'John' });
console.log('Last inserted ID:', engine.connection.lastId);
```

--------------------------------

### PostgreSQL Window Functions

Source: https://github.com/stackpress/inquire/blob/main/docs/dialects/README.md

Provides an example of using window functions in PostgreSQL to assign a rank based on salary.

```typescript
// Window functions
await engine.sql`
  SELECT 
    name,
    salary,
    ROW_NUMBER() OVER (ORDER BY salary DESC) as rank
  FROM employees
`;
```

--------------------------------

### SQLite Schema Creation and Data Handling

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Shows how to connect to an SQLite database using 'better-sqlite3' and '@stackpress/inquire-sqlite3'. It details creating a 'users' table, handling JSON as TEXT, inserting data with boolean represented as integers, and retrieving the last inserted row ID.

```typescript
import Database from 'better-sqlite3';
import connect from '@stackpress/inquire-sqlite3';

// Connection setup
const db = new Database('myapp.db');
const engine = connect(db);

// SQLite-specific features
await engine.create('users')
  .addField('id', { type: 'INTEGER', primaryKey: true, autoIncrement: true })
  .addField('name', { type: 'TEXT' })
  .addField('data', { type: 'TEXT' }) // JSON as TEXT
  .addField('created_at', { type: 'DATETIME', default: 'CURRENT_TIMESTAMP' });

// SQLite doesn't support boolean, so use INTEGER
await engine.insert('users')
  .values({
    name: 'Bob',
    active: 1, // boolean as integer
    data: JSON.stringify({ role: 'user' })
  });

// Using last insert row ID
await engine.insert('users').values({ name: 'Carol' });
console.log('Last inserted row ID:', engine.connection.lastId);
```

--------------------------------

### Search Products with Filters using Inquire

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Implements a function to search for products based on provided filters. It allows searching by name, filtering by minimum and maximum price, and checking stock availability. The function returns active products, ordered by name.

```typescript
const searchProducts = async (filters: {
  search?: string;
  minPrice?: number;
  maxPrice?: number;
  inStock?: boolean;
}) => {
  let query = engine.select('*').from('products').where('active = ?', [true]);
  
  if (filters.search) {
    query = query.where('name LIKE ?', [`%${filters.search}%`]);
  }
  
  if (filters.minPrice !== undefined) {
    query = query.where('price >= ?', [filters.minPrice]);
  }
  
  if (filters.maxPrice !== undefined) {
    query = query.where('price <= ?', [filters.maxPrice]);
  }
  
  if (filters.inStock) {
    query = query.where('stock_quantity > ?', [0]);
  }
  
  return await query.orderBy('name', 'ASC');
};

// Usage
const results = await searchProducts({
  search: 'laptop',
  minPrice: 500,
  maxPrice: 2000,
  inStock: true
});
```

--------------------------------

### Full-Text Search (FTS5) Setup in SQLite

Source: https://github.com/stackpress/inquire/blob/main/docs/dialects/SQLite.md

Demonstrates creating a virtual FTS5 table for full-text search capabilities and populating it from an existing 'posts' table.

```sql
CREATE VIRTUAL TABLE posts_fts USING fts5(title, content, content='posts', content_rowid='id')
```

```sql
INSERT INTO posts_fts(rowid, title, content) 
SELECT id, title, content FROM posts
```

--------------------------------

### Manage Tables: Drop, Rename, Truncate

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Demonstrates common table management operations: dropping a table, renaming a table, and truncating a table (emptying all its rows). It also shows how to perform a truncate with cascade option, typically used in PostgreSQL.

```typescript
// Drop table
await engine.drop('old_table');

// Rename table
await engine.rename('old_name', 'new_name');

// Truncate table
await engine.truncate('temp_data');

// Truncate with cascade (PostgreSQL)
await engine.truncate('parent_table', true);
```

--------------------------------

### Fluent Query Building Example

Source: https://github.com/stackpress/inquire/blob/main/docs/builders/README.md

Demonstrates the fluent, chainable API for constructing a SQL SELECT query. It shows how to specify columns, table, filtering, ordering, and limiting results.

```typescript
import { engine } from '@stackpress/inquire';

// Example: Fluent query building
const users = await engine.select(['id', 'name', 'email'])
  .from('users')
  .where('active = ?', [true])
  .orderBy('created_at', 'DESC')
  .limit(10);
```

--------------------------------

### PostgreSQL Window Functions with ROW_NUMBER

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Demonstrates how to use the ROW_NUMBER() window function in PostgreSQL to rank posts by creation date for each user. This is useful for tasks like finding the latest post per user.

```typescript
const rankedPosts = await engine.sql<{
  id: number;
  title: string;
  user_id: number;
  rank: number;
}>`
  SELECT 
    id,
    title,
    user_id,
    ROW_NUMBER() OVER (PARTITION BY user_id ORDER BY created_at DESC) as rank
  FROM posts
  WHERE published = ${true}
`;
```

--------------------------------

### Managing Database Transactions

Source: https://github.com/stackpress/inquire/blob/main/docs/Engine.md

Provides an example of executing multiple database queries within a transaction using Stackpress Inquire. It shows how to perform inserts and ensures atomicity for related operations.

```typescript
const result = await engine.transaction(async (trx) => {
  // Insert user
  const userResult = await trx.insert('users')
    .values({ name: 'Alice', email: 'alice@example.com' });
  
  // Insert related data
  await trx.insert('profiles')
    .values({ user_id: userResult.insertId, bio: 'Hello world' });
  
  return { success: true, userId: userResult.insertId };
});
```

--------------------------------

### Execute BetterSqlite3 Queries

Source: https://github.com/stackpress/inquire/blob/main/docs/Connections.md

Provides an example of executing a query against a SQLite database using BetterSqlite3. The results are typed to return an array of 'User' objects, and the last inserted ID is tracked.

```typescript
const users = await connection.query<User>({
  query: 'SELECT * FROM users WHERE age > ?',
  values: [18]
});
// Returns User[] with last inserted row ID tracked
```

--------------------------------

### TypeScript: Update with Multiple Joins

Source: https://github.com/stackpress/inquire/blob/main/docs/builders/Update.md

Applies a discount to order items for 'vip' customers' 'electronics' products. This example demonstrates performing updates involving multiple joined tables.

```typescript
// Update with multiple joins
await engine.update('order_items oi')
  .innerJoin('orders o', 'oi.order_id = o.id')
  .innerJoin('products p', 'oi.product_id = p.id')
  .set({ 'oi.discount_applied': true })
  .where('o.customer_type = ?', ['vip'])
  .where('p.category = ?', ['electronics']);
```

--------------------------------

### Handle Inquire Database Exceptions

Source: https://github.com/stackpress/inquire/blob/main/docs/Connections.md

Shows how to handle database-related errors using the `InquireException`. The example demonstrates a `try...catch` block that specifically catches `InquireException` instances, allowing for targeted error logging and management.

```typescript
import { InquireException } from '@stackpress/inquire';

try {
  await connection.query({ query: 'INVALID SQL', values: [] });
} catch (error) {
  if (error instanceof InquireException) {
    console.log('Database error:', error.message);
  }
}
```

--------------------------------

### Recursive Common Table Expression (CTE) in SQLite

Source: https://github.com/stackpress/inquire/blob/main/docs/dialects/SQLite.md

Provides an example of a recursive CTE in SQLite to generate a category tree structure, starting from parentless categories and traversing down.

```sql
WITH RECURSIVE category_tree(id, name, parent_id, level) AS (
  SELECT id, name, parent_id, 0 
  FROM categories 
  WHERE parent_id IS NULL
  
  UNION ALL
  
  SELECT c.id, c.name, c.parent_id, ct.level + 1
  FROM categories c
  JOIN category_tree ct ON c.parent_id = ct.id
)
SELECT * FROM category_tree ORDER BY level, name
```

--------------------------------

### Transaction Error Handling and Rollback

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Demonstrates how to handle errors within a database transaction. If an error occurs during any of the operations inside the `transaction` callback, the entire transaction is automatically rolled back, ensuring data consistency. The `catch` block logs the error message.

```typescript
try {
  const result = await engine.transaction(async (trx) => {
    await trx.insert('users')
      .values({ name: 'Bob', email: 'existing@example.com' }); // This might fail
    
    await trx.insert('posts')
      .values({ user_id: 999, title: 'Test' }); // This might also fail
    
    return 'success';
  });
} catch (error) {
  console.log('Transaction failed and was rolled back:', error.message);
}
```

--------------------------------

### Stackpress Inquire: Alter Table - Initial Example

Source: https://github.com/stackpress/inquire/blob/main/docs/builders/Alter.md

Demonstrates the initial setup of an Alter builder to modify the 'users' table by adding a 'phone' field, changing the 'email' field, and adding an index on 'phone'.

```typescript
const alter = engine.alter('users')
  .addField('phone', { type: 'VARCHAR', length: 20 })
  .changeField('email', { type: 'VARCHAR', length: 320 })
  .addIndex('idx_phone', ['phone']);

await alter;
```

--------------------------------

### Transaction Management

Source: https://github.com/stackpress/inquire/blob/main/README.md

Illustrates how to perform multiple database operations atomically using Inquire's transaction functionality. This example shows inserting data into 'users' and 'posts' tables within a single transaction.

```typescript
const result = await engine.transaction(async (trx) => {
  await trx.insert('users').values({ name: 'Alice' });
  await trx.insert('posts').values({ title: 'Hello World', user_id: 1 });
  return 'success';
});
```

--------------------------------

### Error Handling with InquireException

Source: https://github.com/stackpress/inquire/blob/main/docs/builders/Insert.md

Demonstrates how to handle errors during insert operations using the `InquireException`. The example shows a try-catch block to capture exceptions, log general error messages, and specifically identify issues like duplicate entries or constraint violations.

```typescript
import { InquireException } from '@stackpress/inquire';

try {
  await engine.insert('users')
    .values({
      name: 'John',
      email: 'invalid-email' // Might violate constraints
    });
} catch (error) {
  if (error instanceof InquireException) {
    console.log('Insert error:', error.message);
    
    // Handle specific error types
    if (error.message.includes('duplicate')) {
      console.log('Duplicate entry detected');
    } else if (error.message.includes('constraint')) {
      console.log('Constraint violation');
    }
  }
}
```

--------------------------------

### PostgreSQL Schema Creation and Querying

Source: https://github.com/stackpress/inquire/blob/main/docs/Examples.md

Illustrates connecting to a PostgreSQL database using 'pg' and '@stackpress/inquire-pg'. It covers creating a 'users' table with SERIAL, JSONB types, and default timestamps, inserting data with a RETURNING clause, and executing SQL queries with JSON data extraction.

```typescript
import { Pool } from 'pg';
import connect from '@stackpress/inquire-pg';

// Connection setup
const pool = new Pool({
  user: 'postgres',
  host: 'localhost',
  database: 'myapp',
  password: 'password',
  port: 5432,
});

const connection = await pool.connect();
const engine = connect(connection);

// PostgreSQL-specific features
await engine.create('users')
  .addField('id', { type: 'SERIAL', primaryKey: true })
  .addField('name', { type: 'VARCHAR', length: 255 })
  .addField('data', { type: 'JSONB' })
  .addField('created_at', { type: 'TIMESTAMP', default: 'NOW()' });

// Using RETURNING clause
const newUsers = await engine.insert('users')
  .values({ name: 'Alice', data: { role: 'admin' } })
  .returning('*');

// PostgreSQL arrays and JSON
const usersWithJsonData = await engine.sql<{ 
  id: number;
  name: string;
  roles: string[];
}>`
  SELECT 
    id,
    name,
    data->>'roles' as roles
  FROM users 
  WHERE data ? ${'role'}
`;
```

--------------------------------

### Comprehensive Table Alteration Example

Source: https://github.com/stackpress/inquire/blob/main/docs/builders/Alter.md

A detailed example of performing multiple schema modifications on a 'blog_posts' table, including adding various fields, modifying existing ones, adding indexes, unique constraints, and foreign keys.

```typescript
await engine.alter('blog_posts')
  // Add new fields
  .addField('excerpt', { 
    type: 'TEXT', 
    nullable: true 
  })
  .addField('featured_image', { 
    type: 'VARCHAR', 
    length: 500, 
    nullable: true 
  })
  .addField('meta_title', { 
    type: 'VARCHAR', 
    length: 60, 
    nullable: true 
  })
  .addField('meta_description', { 
    type: 'VARCHAR', 
    length: 160, 
    nullable: true 
  })
  .addField('reading_time', { 
    type: 'INTEGER', 
    unsigned: true, 
    nullable: true 
  })
  .addField('featured', { 
    type: 'BOOLEAN', 
    default: false 
  })
  // Modify existing fields
  .changeField('title', { 
    type: 'VARCHAR', 
    length: 300, 
    nullable: false 
  })
  .changeField('content', { 
    type: 'LONGTEXT', 
    nullable: false 
  })
  // Add indexes for performance
  .addIndex('idx_featured', ['featured'])
  .addIndex('idx_reading_time', ['reading_time'])
  .addIndex('idx_meta_title', ['meta_title'])
  // Add unique constraint
  .addUniqueKey('unique_meta_title', ['meta_title'])
  // Add foreign key for featured image
  .addField('featured_image_id', { 
    type: 'INTEGER', 
    unsigned: true, 
    nullable: true 
  })
  .addForeignKey('fk_featured_image', {
    local: ['featured_image_id'],
    foreign: { table: 'media', columns: ['id'] },
    onUpdate: 'CASCADE',
    onDelete: 'SET NULL'
  })
  .addIndex('idx_featured_image', ['featured_image_id']);
```

--------------------------------

### MySQL JSON Operations

Source: https://github.com/stackpress/inquire/blob/main/docs/dialects/README.md

Provides an example of performing JSON operations in MySQL using JSON_EXTRACT and JSON_CONTAINS.

```typescript
// JSON operations
await engine.sql`
  SELECT JSON_EXTRACT(data, '$.name') as name
  FROM users 
  WHERE JSON_CONTAINS(data, ${'{"active": true}'})
`;
```

--------------------------------

### MySQL Multi-Table Operations

Source: https://github.com/stackpress/inquire/blob/main/docs/dialects/README.md

Shows an example of deleting data from multiple tables in MySQL using a LEFT JOIN.

```typescript
// Multi-table operations
await engine.sql`
  DELETE u, p 
  FROM users u 
  LEFT JOIN posts p ON u.id = p.user_id 
  WHERE u.active = ${[false]}
`;
```

--------------------------------

### Connect to PostgreSQL with Inquire

Source: https://github.com/stackpress/inquire/blob/main/packages/inquire/README.md

Shows how to connect to PostgreSQL using either a `pg` Pool or Client and then map the connection to the Inquire engine.

```typescript
import { Client, Pool } from 'pg';
import connect from '@stackpress/inquire-pg';

// Using a Pool
const pool = new Pool({
  database: 'inquire',
  user: 'postgres'
});
const connection = await pool.connect();

// Or using a Client
const client = new Client({
  database: 'inquire',
  user: 'postgres'
});
await client.connect();

// Map the resource to the Inquire engine
const engine = connect(connection); // or connect(client)
```

--------------------------------

### Connect to MySQL using Mysql2Connection

Source: https://github.com/stackpress/inquire/blob/main/docs/Connections.md

Demonstrates how to establish a connection to a MySQL database using the `Mysql2Connection` class from the `@stackpress/inquire-mysql2` package. It shows the necessary imports and the process of creating a database resource and then an Inquire engine.

```typescript
import mysql from 'mysql2/promise';
import connect from '@stackpress/inquire-mysql2';

const resource = await mysql.createConnection({
  host: 'localhost',
  user: 'root',
  database: 'inquire',
});

const engine = connect(resource);
```

--------------------------------

### Connect to MySQL with Inquire

Source: https://github.com/stackpress/inquire/blob/main/packages/inquire/README.md

Demonstrates how to establish a MySQL connection using `mysql2/promise` and integrate it with the Inquire engine.

```typescript
import mysql from 'mysql2/promise';
import connect from '@stackpress/inquire-mysql2';

// Create the raw database connection
const resource = await mysql.createConnection({
  host: 'localhost',
  user: 'root',
  database: 'inquire',
});

// Map the resource to the Inquire engine
const engine = connect(resource);
```

--------------------------------

### Window Functions: Running Totals

Source: https://github.com/stackpress/inquire/blob/main/docs/builders/Select.md

Example of calculating running totals using the `SUM() OVER()` window function, ordered by a specific column.

```typescript
const runningTotals = await engine.select([
    'id',
    'amount',
    'created_at',
    'SUM(amount) OVER (ORDER BY created_at) as running_total'
  ])
  .from('orders')
  .orderBy('created_at');
```

--------------------------------

### Connect to PostgreSQL with Inquire

Source: https://github.com/stackpress/inquire/blob/main/README.md

Shows how to connect to PostgreSQL using either a `pg` Pool or Client and then map the connection to the Inquire engine.

```typescript
import { Client, Pool } from 'pg';
import connect from '@stackpress/inquire-pg';

// Using a Pool
const pool = new Pool({
  database: 'inquire',
  user: 'postgres'
});
const connection = await pool.connect();

// Or using a Client
const client = new Client({
  database: 'inquire',
  user: 'postgres'
});
await client.connect();

// Map the resource to the Inquire engine
const engine = connect(connection); // or connect(client)
```

--------------------------------

### Remove Indexes

Source: https://github.com/stackpress/inquire/blob/main/docs/builders/Alter.md

Provides an example of removing existing indexes from a database table. This is useful for optimizing schema by removing unused or redundant indexes.

```typescript
await engine.alter('posts')
  .removeIndex('old_index')
  .removeIndex('unused_index')
  .removeIndex('deprecated_idx');
```

--------------------------------

### Conditional Updates

Source: https://github.com/stackpress/inquire/blob/main/docs/builders/Update.md

Provides examples of performing conditional updates based on current record values or using CASE statements for complex logic.

```typescript
// Update based on current values
await engine.update('users')
  .set({
    status: 'inactive',
    deactivated_at: new Date()
  })
  .where('last_login < ?', [new Date(Date.now() - 90 * 24 * 60 * 60 * 1000)])
  .where('status = ?', ['active']);
```

```typescript
// Update with CASE statements
await engine.update('products')
  .set({
    status: `CASE 
      WHEN stock_quantity = 0 THEN 'out_of_stock'
      WHEN stock_quantity < 10 THEN 'low_stock'
      ELSE 'in_stock'
    END`,
    updated_at: new Date()
  })
  .where('category = ?', ['electronics']);
```

--------------------------------

### Connect to MySQL with Inquire

Source: https://github.com/stackpress/inquire/blob/main/README.md

Demonstrates how to establish a MySQL connection using `mysql2/promise` and integrate it with the Inquire engine.

```typescript
import mysql from 'mysql2/promise';
import connect from '@stackpress/inquire-mysql2';

// Create the raw database connection
const resource = await mysql.createConnection({
  host: 'localhost',
  user: 'root',
  database: 'inquire',
});

// Map the resource to the Inquire engine
const engine = connect(resource);
```

--------------------------------

### SQLite Indexing Strategy

Source: https://github.com/stackpress/inquire/blob/main/docs/dialects/SQLite.md

Provides examples of creating various types of indexes in SQLite to optimize query performance, including single-column, composite, and partial indexes.

```typescript
await engine.sql`CREATE INDEX idx_users_email ON users(email)`;
```

```typescript
await engine.sql`CREATE INDEX idx_posts_user_id ON posts(user_id)`;
```

```typescript
await engine.sql`CREATE INDEX idx_posts_created_at ON posts(created_at)`;
```

```typescript
await engine.sql`CREATE INDEX idx_posts_status_date ON posts(status, created_at)`;
```

```typescript
await engine.sql`CREATE INDEX idx_active_users ON users(email) WHERE active = 1`;
```

--------------------------------

### SQLite Auto-Increment Support

Source: https://github.com/stackpress/inquire/blob/main/docs/dialects/SQLite.md

Demonstrates the support for AUTOINCREMENT in the SQLite dialect for primary key fields. Examples show how to define auto-incrementing integer primary keys.

```typescript
engine.create('users')
  .field('id', { type: 'int', autoIncrement: true })  // INTEGER PRIMARY KEY AUTOINCREMENT
  .primary('id');

// Or inline primary key
engine.create('posts')
  .field('id', { type: 'int', autoIncrement: true })  // Automatically becomes PRIMARY KEY
  .field('title', { type: 'varchar', length: 255 });
```

--------------------------------

### Connect to PostgreSQL using PGConnection

Source: https://github.com/stackpress/inquire/blob/main/docs/Connections.md

Demonstrates how to establish a connection to a PostgreSQL database using the `PGConnection` class from the `@stackpress/inquire-pg` package. It includes setting up the `pg` client and creating an Inquire engine.

```typescript
import { Client } from 'pg';
import connect from '@stackpress/inquire-pg';

const client = new Client({
  database: 'inquire',
  user: 'postgres'
});
await client.connect();

const engine = connect(client);
```

--------------------------------

### Getting Query Information

Source: https://github.com/stackpress/inquire/blob/main/docs/builders/Select.md

Shows how to inspect the generated SQL query string and parameter values before executing the query using the `.query()` method.

```typescript
const selectBuilder = engine.select(['id', 'name'])
  .from('users')
  .where('active = ?', [true])
  .orderBy('name', 'ASC')
  .limit(10);

const { query, values } = selectBuilder.query();
console.log('SQL:', query);
console.log('Values:', values);

// Then execute
const results = await selectBuilder;
```