Returning a Value¶

To return a value, use the RETURN command. You can return a value from:

• A block in a stored procedure.

• An anonymous block.

You can return a value of one of the following types:

• A SQL data type.

• A table. Use TABLE(...) in the RETURN statement.

  If your block is in a stored procedure, you must also specify the RETURNS TABLE... clause in the CREATE PROCEDURE statement.

  Note

  Currently, in the RETURNS TABLE(...) clause, you cannot specify GEOGRAPHY as a column type. This applies whether you’re creating a stored or anonymous procedure.

  CREATE OR REPLACE PROCEDURE test_return_geography_table_1()
    RETURNS TABLE(g GEOGRAPHY)
    ...
  

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  WITH test_return_geography_table_1() AS PROCEDURE
    RETURNS TABLE(g GEOGRAPHY)
    ...
  CALL test_return_geography_table_1();
  

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  If you attempt to specify GEOGRAPHY as a column type, calling the stored procedure results in the error:

  Stored procedure execution error: data type of returned table does not match expected returned table type
  

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  To work around this, you can omit the column arguments and types in RETURNS TABLE().

  CREATE OR REPLACE PROCEDURE test_return_geography_table_1()
    RETURNS TABLE()
    ...
  

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  WITH test_return_geography_table_1() AS PROCEDURE
    RETURNS TABLE()
    ...
  CALL test_return_geography_table_1();
  

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  If you want to return the data that a RESULTSET points to, pass the RESULTSET to TABLE(...), as shown in the example below:

  create procedure ...
  returns table(...)
  ...
  return table(my_result_set);
  ...
  

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  See Returning a RESULTSET as a Table.