odbc_statistics
(PHP 4, PHP 5, PHP 7)
odbc_statistics — Retrieve statistics about a table
Descrierea
odbc_statistics
( resource $odbc
, string|null $catalog
, string $schema
, string $table
, int $unique
, int $accuracy
) : resource|false
Parametri
-
odbc
-
Identificatorul conexiunii ODBC, accesați odbc_connect()
pentru detalii.
-
catalog
-
Catalogul ('calificativul' în jargonul ODBC 2).
-
schema
-
Schema ('proprietarul' în jargonul ODBC 2).
-
table
-
The table name.
-
unique
-
The type of the index.
One of SQL_INDEX_UNIQUE
or SQL_INDEX_ALL
.
-
accuracy
-
One of SQL_ENSURE
or SQL_QUICK
.
The latter requests that the driver retrieve the CARDINALITY
and
PAGES
only if they are readily available from the server.
Valorile întoarse
Returns an ODBC result identifier sau false
în cazul eșecului.
The result set has the following columns:
TABLE_CAT
TABLE_SCHEM
TABLE_NAME
NON_UNIQUE
INDEX_QUALIFIER
INDEX_NAME
TYPE
ORDINAL_POSITION
COLUMN_NAME
ASC_OR_DESC
CARDINALITY
PAGES
FILTER_CONDITION
Driver-ele pot raporta coloane suplimentare.
The result set is ordered by NON_UNIQUE
, TYPE
, INDEX_QUALIFIER
,
INDEX_NAME
and ORDINAL_POSITION
.
Exemple
Example #1 List Statistics of a Table
<?php
$conn = odbc_connect($dsn, $user, $pass);
$statistics = odbc_statistics($conn, 'TutorialDB', 'dbo', 'TEST', SQL_INDEX_UNIQUE, SQL_QUICK);
while (($row = odbc_fetch_array($statistics))) {
print_r($row);
break; // further rows omitted for brevity
}
?>
Exemplul de mai sus va afișa ceva similar cu:
Array
(
[TABLE_CAT] => TutorialDB
[TABLE_SCHEM] => dbo
[TABLE_NAME] => TEST
[NON_UNIQUE] =>
[INDEX_QUALIFIER] =>
[INDEX_NAME] =>
[TYPE] => 0
[ORDINAL_POSITION] =>
[COLUMN_NAME] =>
[ASC_OR_DESC] =>
[CARDINALITY] => 15
[PAGES] => 3
[FILTER_CONDITION] =>
)
A se vedea și
- odbc_tables() - Get the list of table names stored in a specific data source