Tablestore:Term query

1. Go to the Indexes tab.

   1. Log on to the Tablestore console.

   2. In the top navigation bar, select a resource group and a region.

   3. On the Overview page, click the name of the instance that you want to manage or click Manage Instance in the Actions column of the instance.

   4. On the Tables tab of the Instance Details tab, click the name of the data table or click Indexes in the Actions column of the data table.

2. On the Indexes tab, find the search index that you want to use to query data and click Manage Data in the Actions column.

3. In the Search dialog box, configure query parameters.

   1. By default, the system returns all attribute columns. To return specific attribute columns, turn off All Columns and specify the attribute columns that you want to return. Separate multiple attribute columns with commas (,).

      Note

      By default, the system returns all primary key columns of the data table.

   2. Select the And, Or, or Not logical operator based on your business requirements.

      If you select the And logical operator, data that meets the query conditions is returned. If you select the Or operator and specify a single query condition, data that meets the query condition is returned. If you select the Or logical operator and specify multiple query conditions, data that meets one of the query conditions is returned. If you select the Not logical operator, data that does not meet the query conditions is returned.

   3. Select an index field and click Add.

   4. Select TermQuery (TermQuery) from the Query Type drop-down list and specify the field value.

   5. By default, the sorting feature is disabled. If you want to sort the query results based on specific fields, turn on Sort and specify the fields based on which you want to sort the query results and the sorting order.

   6. By default, the aggregation feature is disabled. If you want to collect statistics on a specific field, turn on Collect Statistics, specify the field based on which you want to collect statistics, and then configure the information that is required to collect statistics.

4. Click OK.

   Data that meets the query conditions is displayed in the specified order on the Indexes tab.

Run the search command in the Tablestore CLI to query data by using search indexes. For more information, see Search index.

1. Run the search command to use the search_index search index to query data and return all indexed columns of each row that meets the query conditions.

   search -n search_index --return_all_indexed

2. Enter the query conditions as prompted by the system. Sample code:

   {
       "Offset": -1,
       "Limit": 10,
       "Collapse": null,
       "Sort": null,
       "GetTotalCount": true,
       "Token": null,
       "Query": {
           "Name": "TermQuery",
           "Query": {
               "FieldName": "col_keyword",
               "Term": "hangzhou"
           }
       }
   }

You can perform match queries by using Tablestore SDK for Java, Tablestore SDK for Go, Tablestore SDK for Python, Tablestore SDK for Node.js, Tablestore SDK for .NET and Tablestore SDK for PHP. The following sample code provides an example on how to perform match queries by using Tablestore SDK for Java.

The following sample code provides an example on how to query the rows in which the value of the Col_Keyword column exactly matches "hangzhou" in a table:

/**
 * Query the rows in which the value of the Col_Keyword column exactly matches "hangzhou" in a table: 
 * @param client
 */
private static void termQuery(SyncClient client) {
    SearchQuery searchQuery = new SearchQuery();
    TermQuery termQuery = new TermQuery(); // Set the query type to TermQuery. 
    termQuery.setFieldName("Col_Keyword"); // Set the name of the field that you want to match. 
    termQuery.setTerm(ColumnValue.fromString("hangzhou")); // Set the value that you want to match. 
    searchQuery.setQuery(termQuery);
    //searchQuery.setGetTotalCount(true); //Set the GetTotalCount parameter to true to return the total number of rows that meet the query conditions. 

    SearchRequest searchRequest = new SearchRequest("<TABLE_NAME>", "<SEARCH_INDEX_NAME>", searchQuery);
    // You can configure the columnsToGet parameter to specify the columns to return or specify that all columns are returned. If you do not configure this parameter, only the primary key columns are returned. 
    //SearchRequest.ColumnsToGet columnsToGet = new SearchRequest.ColumnsToGet();
    //columnsToGet.setReturnAll(true); // Specify that all columns are returned. 
    //columnsToGet.setColumns(Arrays.asList("ColName1","ColName2")); // Specify the columns that you want to return. 
    //searchRequest.setColumnsToGet(columnsToGet);

    SearchResponse resp = client.search(searchRequest);
    //System.out.println("TotalCount: " + resp.getTotalCount()); // Specify that the total number of matched rows instead of the number of returned rows is displayed. 
    System.out.println("Row: " + resp.getRows());
}