odbc_statistics

(PHP 4, PHP 5, PHP 7)

odbc_statistics — Retrieve statistics about a table

说明

odbc_statistics ( resource $connection_id , string $qualifier , string $owner , string $table_name , int $unique , int $accuracy ) : resource

Get statistics about a table and its indexes.

参数

connection_id

ODBC 连接标识符，详见 odbc_connect()。

qualifier

The qualifier.

owner

The owner.

table_name

The table name.

unique

The unique attribute.

accuracy

The accuracy.

返回值

Returns an ODBC result identifier 或者在失败时返回 FALSE.

The result set has the following columns:

  • TABLE_QUALIFIER
  • TABLE_OWNER
  • TABLE_NAME
  • NON_UNIQUE
  • INDEX_QUALIFIER
  • INDEX_NAME
  • TYPE
  • SEQ_IN_INDEX
  • COLUMN_NAME
  • COLLATION
  • CARDINALITY
  • PAGES
  • FILTER_CONDITION

The result set is ordered by NON_UNIQUE, TYPE, INDEX_QUALIFIER, INDEX_NAME and SEQ_IN_INDEX.