database.inc

Core systems for the database layer.

Classes required for basic functioning of the database system should be placed in this file. All utility functions should also be placed in this file only, as they cannot auto-load the way classes can.

File

core/includes/database.inc

Functions

Name	Description
db_add_field Deprecated	Adds a new field to a table.
db_add_index Deprecated	Adds an index.
db_add_primary_key Deprecated	Adds a primary key to a database table.
db_add_unique_key Deprecated	Adds a unique key.
db_and Deprecated	Returns a new DatabaseCondition, set to "AND" all conditions together.
db_change_field Deprecated	Changes a field definition.
db_close Deprecated	Closes the active database connection.
db_condition Deprecated	Returns a new DatabaseCondition, set to the specified conjunction.
db_create_table Deprecated	Creates a new table from a Drupal table definition.
db_delete Deprecated	Returns a new DeleteQuery object for the active database.
db_driver Deprecated	Retrieves the name of the currently active database driver.
db_drop_field Deprecated	Drops a field.
db_drop_index Deprecated	Drops an index.
db_drop_primary_key Deprecated	Drops the primary key of a database table.
db_drop_table Deprecated	Drops a table.
db_drop_unique_key Deprecated	Drops a unique key.
db_escape_field Deprecated	Restricts a dynamic column or constraint name to safe characters.
db_escape_table Deprecated	Restricts a dynamic table name to safe characters.
db_field_exists Deprecated	Checks if a column exists in the given table.
db_field_names Deprecated	Returns an array of field names from an array of key/index column specifiers.
db_field_set_default Deprecated	Sets the default value for a field.
db_field_set_no_default Deprecated	Sets a field to have no default value.
db_find_tables Deprecated	Finds all tables that are like the specified base table name.
db_ignore_replica	Sets a session variable specifying the lag time for ignoring a replica server (A replica server is traditionally referred to as a "slave" in database server documentation).
db_index_exists Deprecated	Checks if an index exists in the given table.
db_insert Deprecated	Returns a new InsertQuery object for the active database.
db_like Deprecated	Escapes characters that work as wildcard characters in a LIKE pattern.
db_merge Deprecated	Returns a new MergeQuery object for the active database.
db_next_id Deprecated	Retrieves a unique id.
db_or Deprecated	Returns a new DatabaseCondition, set to "OR" all conditions together.
db_query Deprecated	Executes an arbitrary query string against the active database.
db_query_range Deprecated	Executes a query against the active database, restricted to a range.
db_query_temporary Deprecated	Executes a SELECT query string and saves the result set to a temporary table.
db_rename_table Deprecated	Renames a table.
db_select Deprecated	Returns a new SelectQuery object for the active database.
db_set_active Deprecated	Sets a new active database.
db_table_exists Deprecated	Checks if a table exists.
db_transaction Deprecated	Returns a new transaction object for the active database.
db_truncate Deprecated	Returns a new TruncateQuery object for the active database.
db_update Deprecated	Returns a new UpdateQuery object for the active database.
db_xor Deprecated	Returns a new DatabaseCondition, set to "XOR" all conditions together.