Tablestore:List the names of mapping tables

Prerequisites

• A Tablestore client is initialized. For more information, see Initialize a Tablestore client.

• A mapping relationship is created. For more information, see Create a mapping relationship.

Usage notes

The SQL query feature is supported by Tablestore SDK for PHP V5.1.0 and later. When you use the SQL query feature, make sure that a supported version of Tablestore SDK for PHP is installed.

For information about the version history of Tablestore SDK for PHP, see Version history of Tablestore SDK for PHP.

Examples

The following sample code provides an example on how to execute the SHOW TABLES statement to list the names of mapping tables that are created for tables in an instance.

$request = array(
    'query' => "SHOW TABLES;",
);
$response = $otsClient->sqlQuery ($request);
$sqlRows = $response['sql_rows'];
print json_encode($sqlRows, JSON_PRETTY_PRINT);

References

After you query the names of the mapping tables, perform operations based on your business requirements.

• To use a mapping table to query data that meets specific conditions, execute the SELECT statement. For more information, see Query data.

• To query details of a mapping table such as field names and field types, execute the DESCRIBE statement. For more information, see Query information about a table.

• To update the attribute column of a mapping table after an attribute column of the data table is changed, execute the ALTER TABLE statement. For more information, see Update attribute columns of mapping tables.

• To delete a mapping table, execute the DROP MAPPING TABLE statement. For more information, see Delete mapping tables.