When querying in Snowflake with JavaScript inside a stored procedure, we typically receive a Result_set. How can the column names of the output result be retrieved using the JavaScript API?
Please note that this inquiry is not about retrieving the values of result columns, which can be done with functions like .getColumnValue() or getColumnValueAsString.
If you're looking to retrieve column names, you can utilize the getColumnName function:
Explore Stored Procedure API - Object Statement here
The Statement object within a stored procedure offers functionality for executing query statements and obtaining metadata like column data types.
getColumnName(colIdx)
This method returns the name of the specified column.
Inputs
The index number of the column (starting from 1).
Here's an example showcasing its usage:
CREATE OR REPLACE PROCEDURE test()
RETURNS string
LANGUAGE JAVASCRIPT
AS
$$
var sql_query = "SELECT 10 as col";
var stmt = snowflake.createStatement( {sqlText: sql_query} );
var result_set = stmt.execute();
return stmt.getColumnName(1);
$$;
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