# 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.