Table

Provides SQL table management helpers for DBI drivers.

trait Table

Includes table discovery, creation, alteration, deletion, and metadata inspection utilities, along with support for related schema features.

Methods

listTables

Lists base tables in the active schema.

public listTables(): void

tableExists

Checks whether a table exists in the current schema.

public tableExists(string $tableName): bool

Parameters

Parameter	Type	Description
$tableName	string	the table name to check

createTable

Creates a new table using the provided column definition map.

public createTable(string $tableName, mixed $columns): bool

Parameters

Parameter	Type	Description
$tableName	string	the table name to create
$columns	mixed	column specifications keyed by column name or provided as numeric entries with a name field

describeTable

Describes columns for a table in the current schema.

public describeTable(string $tableName, ?string $sort, false $): void

Parameters

Parameter	Type	Description
$tableName	string	the table name to inspect
$sort	string	optional column name used to sort metadata rows
$	false

renameTable

Renames an existing table.

public renameTable(string $fromName, string $toName): bool

Parameters

Parameter	Type	Description
$fromName	string	current table name
$toName	string	new table name

dropTable

Drops a table from the database.

public dropTable(string $name, bool $ifExists, bool $cascade): bool

Parameters

Parameter	Type	Description
$name	string	table name to drop
$ifExists	bool	when true, includes IF EXISTS
$cascade	bool	when true, cascades to dependent objects

addColumn

Adds a column to an existing table.

public addColumn(string $tableName, mixed $columnSpec): bool

Parameters

Parameter	Type	Description
$tableName	string	target table name
$columnSpec	mixed	column specification including at least name and type

alterColumn

Alters an existing column definition.

public alterColumn(string $tableName, string $column, mixed $columnSpec): bool

Supported operations include rename, type changes, nullability, and default updates.

Parameters

Parameter	Type	Description
$tableName	string	target table name
$column	string	existing column name
$columnSpec	mixed	alteration specification

dropColumn

Drops a column from a table.

public dropColumn(string $tableName, string $column, bool $ifExists): bool

Parameters

Parameter	Type	Description
$tableName	string	target table name
$column	string	column name to drop
$ifExists	bool	when true, includes IF EXISTS clauses

truncate

TRUNCATE empty a table or set of tables.

public truncate(string $tableName, bool $only, bool $restartIdentity, bool $cascade): bool

TRUNCATE quickly removes all rows from a set of tables. It has the same effect as an unqualified DELETE on each table, but since it does not actually scan the tables it is faster. Furthermore, it reclaims disk space immediately, rather than requiring a subsequent VACUUM operation. This is most useful on large tables.

Parameters

Parameter	Type	Description
$tableName	string	The name of the table(s) to truncate. Multiple tables are supported.
$only	bool	Only the named table is truncated. If FALSE, the table and all its descendant tables (if any) are truncated.
$restartIdentity	bool	Automatically restart sequences owned by columns of the truncated table(s). The default is to no restart.
$cascade	bool	If TRUE, automatically truncate all tables that have foreign-key references to any of the named tables, or to any tables added to the group due to CASCADE. If FALSE, Refuse to truncate if any of the tables have foreign-key references from tables that are not listed in the command. FALSE is the default.

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