You can use term query to query data that exactly matches the specified value of a field. Term query is similar to queries based on string match conditions. If the type of a field is TEXT, Tablestore tokenizes the string and exactly matches tokens.

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.

query_typeThe query type. To use term query, set this parameter to QueryTypeConst::TERM_QUERY.
field_nameThe name of the field that you want to match.
termThe keyword that is used to match the field values when you perform a term query.

This word is not tokenized. Instead, the entire word is used to match the field values.

If the type of a field is TEXT, Tablestore tokenizes the string and exactly matches tokens. For example, TEXT string "tablestore is cool" is tokenized into "tablestore", "is", and "cool". When you specify one of these tokens as a search string, you can retrieve query results that contain "tablestore is cool".

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' => 2,
        'get_total_count' => true,
        'query' => array(
            'query_type' => QueryTypeConst::TERM_QUERY,
            'query' => array(
                'field_name' => 'keyword',
                'term' => 'keyword'
            )
        ),
        'sort' => array(
            array(
                'field_sort' => array(
                    'field_name' => 'keyword',
                    'order' => SortOrderConst::SORT_ORDER_ASC
                )
            ),
        )
    ),
    'columns_to_get' => array(
        'return_type' => ColumnReturnTypeConst::RETURN_ALL,
        'return_names' => array('keyword', 'long')
    )
);
$response = $otsClient->search($request);