odbc_statistics

(PHP 4, PHP 5)

odbc_statistics — Retrieve statistics about a table

说明

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

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.

用户评论:

eion at bigfoot dot com (2011-04-19 15:36:26)

A couple of the function parameters are undefined: unique - determines whether you want to return just unique indexes or all indexes. Use SQL_INDEX_UNIQUE or SQL_INDEX_ALL for this parameter accuracy - whether you wan to return everything there is to know about the table or just what information is readily available. Use SQL_ENSURE or SQL_QUICK for this parameter For a bit more info about this function see the ODBC function SQLStatistics() at http://msdn.microsoft.com/en-us/library/ms711022(v=vs.85).aspx