db2_prepare	db2_procedure_columns

	Last updated: Sat, 20 Oct 2007

db2_primary_keys

(no version information, might be only in CVS)

db2_primary_keys -- Returns a result set listing primary keys for a table

说明

resource db2_primary_keys ( resource connection, string qualifier, string schema, string table-name )

警告

本函数是实验性的。本函数的行为，包括函数名称以及其它任何关于本函数的文档可能会在没有通知的情况下随 PHP 以后的发布而改变。使用本函数风险自担。

Returns a result set listing the primary keys for a table.

参数

connection: A valid connection to an IBM DB2, Cloudscape, or Apache Derby database.
qualifier: A qualifier for DB2 databases running on OS/390 or z/OS servers. For other databases, pass NULL or an empty string.
schema: The schema which contains the tables. If schema is NULL, db2_primary_keys() matches the schema for the current connection.
table-name: The name of the table.

返回值

Returns a statement resource with a result set containing rows describing the primary keys for the specified table. The result set is composed of the following columns:

Column name	Description
TABLE_CAT	Name of the catalog for the table containing the primary key. The value is NULL if this table does not have catalogs.
TABLE_SCHEM	Name of the schema for the table containing the primary key.
TABLE_NAME	Name of the table containing the primary key.
COLUMN_NAME	Name of the column containing the primary key.
KEY_SEQ	1-indexed position of the column in the key.
PK_NAME	The name of the primary key.

参见

db2_column_privileges()

db2_columns()

db2_foreign_keys()

db2_procedure_columns()

db2_procedures()

db2_special_columns()

db2_statistics()

db2_table_privileges()

db2_tables()

db2_prepare	db2_procedure_columns

	Last updated: Sat, 20 Oct 2007


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