You can use match all query to match all rows in a table to query the total number of rows in the table and return multiple random rows.

Prerequisites

  • An OTSClient instance is initialized. For more information, see Initialization.
  • A data table is created. Data is written to the table.
  • A search index is created for the data table. For more information, see Create search indexes.

Parameters

ParameterDescription
table_nameThe name of the data table.
index_nameThe name of the search index.
offsetThe position from which the current query starts.
limitThe maximum number of rows that you want the current query to return.

To query only the number of rows that meet the query conditions without returning specific data, you can set Limit to 0. This way, Tablestore returns the number of rows that meet the query conditions without specific data from the table.

get_total_countSpecifies whether to return the total number of rows that meet the query conditions. The default value of this parameter is false, which indicates that the total number of rows that meet the query conditions is not returned.

If you set this parameter to true, the query performance is compromised.

collapseSpecifies that the returned results are collapsed based on the specified column.
query_typeThe query type. To use match all query, set this parameter to QueryTypeConst::MATCH_ALL_QUERY.
sortThe method that you want to use to sort the rows in the response. For more information, see Sorting and paging.
columns_to_getSpecifies whether to return all columns of each row that meets the query conditions. You can configure return_type and return_names for this parameter.
  • If you set the return_type parameter to ColumnReturnTypeConst::RETURN_SPECIFIED, you can use return_names to specify the columns that you want to return.
  • If you set the return_type parameter to ColumnReturnTypeConst::RETURN_ALL, all columns are returned.
  • If you set the return_type parameter to ColumnReturnTypeConst::RETURN_ALL_FROM_INDEX, all columns in the search index are returned.
  • If you set the return_type parameter to ColumnReturnTypeConst::RETURN_NONE, only the primary key columns are returned.

Examples

$request = array(
    'table_name' => 'php_sdk_test',
    'index_name' => 'php_sdk_test_search_index',
    'search_query' => array(
        'offset' => 0,
        'limit' => 10,
        'get_total_count' => true,
        'collapse' => array(
            'field_name' => 'keyword'
        ),
        'query' => array(
            'query_type' => QueryTypeConst::MATCH_ALL_QUERY
        ),
//        'sort' => array(// Specify a specific sorting method if required. 
//            array(
//                'field_sort' => array(
//                    'field_name' => 'keyword',
//                    'order' => SortOrderConst::SORT_ORDER_ASC
//                )
//            ),
//        ),
        'token' => null,
    ),
    'columns_to_get' => array(
        'return_type' => ColumnReturnTypeConst::RETURN_SPECIFIED,
        'return_names' => array('col1', 'col2')
    )
);
$response = $otsClient->search($request);