getTablesV2.md

getTables: Gets the table descriptions

This command gets the specified table descriptions in the database.

Result set columns: Ordered by TABLE_TYPE, SCHEMA, NAME.

Name	Data Type	Description
SCHEMA	string	schema name
NAME	string	table name
OWNER	string	owner name
TABLE_TYPE	string	table type (supported values are "SYSTEM TABLE", "TABLE", "VIEW")
IS_VIRTUAL	boolean	table is a virtual table
HAS_DISTRIBUTION_KEY	boolean	table is explicitly distributed
HAS_PARTITION_KEY	boolean	table is partitioned
COMMENT	string	table comment

If the command returns a result set which has less than 1,000 rows of data, the data will be provided in the data field of resultSet. However if the command returns a result set which has 1,000 or more rows of data, a result set will be opened whose handle is returned in the resultSetHandle field of resultSet. Using this handle, the data from the result set can be retrieved using the fetch command. Once the result set is no longer needed, it should be closed using the closeResultSet command.

Request fields:

• command (string) => command name: "getTables"
• attributes (object, optional) => attributes to set for the connection (see Attributes)
• schema (string, optional) => schema name search criteria in SQL LIKE format. "" means no schema, null means all schemas.
• table (string, optional) => table name search criteria in SQL LIKE format. "" means no table, null means all tables.
• tableTypes (string[], optional) => array of table types (supported values are "SYSTEM TABLE", "TABLE", "VIEW"). null means all table types.

Request JSON format

 {
     "command": "getTables",
     "attributes": {
             // as defined separately
     },
     "schema": <string>,
     "table": <string>,
     "tableTypes": [
                  <string>
     ]
 }

Response fields:

• status (string) => command status: "ok" or "error"
• attributes (object, optional) => attributes set for the connection (see Attributes)
• responseData (object, optional) => only present if status is "ok"
  • numResults (number) => number of result objects
  • results (object[]) => array of result objects
    • resultType (string) => type of result: "resultSet"
    • resultSet (object) => result set
      • resultSetHandle (number, optional) => result set handle
      • numColumns (number) => number of columns in the result set
      • numRows (number) => number of rows in the result set
      • numRowsInMessage (number) => number of rows in the current message
      • columns (object[]) => array of column metadata objects
        • name (string) => column name
        • dataType (object) => column metadata
          • type (string) => column data type
          • precision (number, optional) => column precision
          • scale (number, optional) => column scale
          • size (number, optional) => maximum size in bytes of a column value
          • characterSet (string, optional) => character encoding of a text column
      • data (array[], optional) => object containing the data in column-major order
• exception (object, optional) => only present if status is "error"
  • text (string) => exception message which provides error details
  • sqlCode (string) => five-character exception code if known, otherwise "00000"

Response JSON format

 {
     "status": <"ok" | "error">,
     "attributes": {
         // as defined separately
     },
     // in case of "ok"
     "responseData": {
         "numResults": <number>,
         "results": [ {
             "resultType": "resultSet",
             "resultSet": {
                 "resultSetHandle": <number>,
                 "numColumns": <number>,
                 "numRows": <number>,
                 "numRowsInMessage": <number>,
                 "columns": [ {
                     "name": <string>,
                     "dataType": {
                         "type": <string>,
                         "precision": <number>,
                         "scale": <number>,
                         "size": <number>,
                         "characterSet": <string>
                     }
                 } ],
                 "data": [
                     [
                         <string | number | true | false | null>
                     ]
                 ]
             }
         } ]
     },
     // in case of "error"
     "exception": {
         "text": <string>,
         "sqlCode": <string>
     }
 }