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Revision: Wed, 04 Nov 2026 16:26:00 GMT

Database - Errata

Timestamps
Driver Specific notes

The documentation section lists non-obvious behaviors of the DBAL component and ways to avoid them.

#Timestamps

Consider using 'datetime' type for your columns instead of 'timestamp' as it gives you more unified support and ability to define proper default values.

Timestamp fields behavior is different in MySQL 5.5 and MySQL 5.6+!

#Driver Specific notes

Not all drivers implemented equally:

#MySQL Driver

The DBAL layer fully supports MySQL driver with all functionality being available.

The default table engine set to InnoDB.

#Postgres Driver

Postgres driver includes custom implementation of InsertQuery to address the return value of auto-incremental PK, it will automatically add RETURNING {primary key} to the generated SQL query.

#Postgres schemas

By default, Postgres driver uses public schema and works only with tables with public schema. If you want to change default behavior, you have to pass desired schema list via connection config:

php

'postgres' => new Config\PostgresDriverConfig(
    connection: new Config\Postgres\TcpConnectionConfig(
        database: 'spiral',
        host: '127.0.0.1',
        port: 5432,
        user: 'spiral',
        password: '',
    ),
    schema: [
        'public', 
        'private', 
        '$user' // Current user namespace
    ],
    queryCache: true,
),

Given list of schemas will be used for filtering available tables.

#Schema declaration

php

// will be used the first schema from config (public)
$schema1 = $dbal->database()->table('users')->getSchema();
$schema1->column('id')->primary();
$schema1->save();

// private
$schema = $dbal->database()->table('private.users')->getSchema();
$schema->column('id')->primary();
$schema->save();

// test
$schema2 = $dbal->database()->table('test.users')->getSchema();
$schema2->column('id')->primary();
$schema2->save();

// Current user schema
$schema2 = $dbal->database()->table('$user.users')->getSchema();
$schema2->column('id')->primary();
$schema2->save();
// ...

#Database hasTable method

php

$db = $dbal->database();

$db->hasTable('private.users'); // true

$db->hasTable('test.users'); // true

// Current user schema
$db->hasTable('$user.users'); // true

// will be used the first schema from config (public)
$db->hasTable('users'); // true
// ...

#Database getTableNames method

Method will return tables with schema.

php

$db = $dbal->database();
$tables = $db->getTables();

$tables[0]->getName(); // users
$tables[0]->getFullName(); // private.users

$tables[1]->getName(); // users
$tables[1]->getFullName(); // private.users

$tables[2]->getName(); // users
$tables[2]->getFullName(); // spiral.users - current user namespace for user with username 'spiral'

// table with schema 'test' will be ignored. It doesn't present in connection config schema list

// ...

#Query builder

You can use table names with schema declaration in a Query builder via dot notation.

php

$db = $dbal->database();
$tables = $db->select()->from('private.users')->...

#SQLServer Driver

SQLServer includes a fallback mechanism to limit your selection without orderBy specified. In some cases, it might add _row_number_ column at the end of the selected columns.

SQLServer is optimized to work with 12+ versions of Microsoft SQL Server.

#SQLite Driver

SQLite DBMS does not support a set of table altering operations, to address some of the schema migrations will be performed using temporary tables and data copy.

← PREVIOUS Synchronizing Database Schema (Migrations)

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