api.drupal.org BETA

Version

1.102 (checked in on 2010/03/09 at 11:39:07 by dries)

Description

Base classes for the database layer.

Functions

Name	Description
db_add_field	Adds a new field to a table.
db_add_index	Adds an index.
db_add_primary_key	Adds a primary key to a database table.
db_add_unique_key	Adds a unique key.
db_change_field	Changes a field definition.
db_close	Closes the active database connection.
db_column_exists	Checks if a column exists in the given table.
db_create_table	Creates a new table from a Drupal table definition.
db_delete	Returns a new DeleteQuery object for the active database.
db_driver	Retrieves the name of the currently active database driver.
db_drop_field	Drops a field.
db_drop_index	Drops an index.
db_drop_primary_key	Drops the primary key of a database table.
db_drop_table	Drops a table.
db_drop_unique_key	Drops a unique key.
db_escape_table	Restricts a dynamic table, column, or constraint name to safe characters.
db_field_names	Returns an array of field names from an array of key/index column specifiers.
db_field_set_default	Sets the default value for a field.
db_field_set_no_default	Sets a field to have no default value.
db_find_tables	Finds all tables that are like the specified base table name.
db_ignore_slave	Sets a session variable specifying the lag time for ignoring a slave server.
db_index_exists	Checks if an index exists in the given table.
db_insert	Returns a new InsertQuery object for the active database.
db_is_active	Determines if there is an active connection.
db_like	Escapes characters that work as wildcard characters in a LIKE pattern.
db_merge	Returns a new MergeQuery object for the active database.
db_next_id	Retrieves a unique id.
db_query	Executes an arbitrary query string against the active database.
db_query_range	Executes a query against the active database, restricted to a range.
db_query_temporary	Executes a query string and saves the result set to a temporary table.
db_rename_table	Renames a table.
db_select	Returns a new SelectQuery object for the active database.
db_set_active	Sets a new active database.
db_table_exists	Checks if a table exists.
db_transaction	Returns a new transaction object for the active database.
db_truncate	Returns a new TruncateQuery object for the active database.
db_update	Returns a new UpdateQuery object for the active database.
_db_check_install_needed	Redirects the user to the installation script.
_db_create_keys_sql