SSC-EWI-OR0108

The Following Assignment Statement is Not Supported by Snowflake Scripting

Severity

Medium

Some parts of the output code are omitted for clarity reasons.

Description

Some Oracle variable types do not have a direct translation in Snowflake. Currently, transformation for cursor, collection, record, and user-defined type variables; as well as placeholders, objects, and output parameters are not supported by Snow Scripting.

Changing these variables to Snowflake semi-structured data types could help as a workaround in some scenarios.

Example Code

Input Code:

IN -> Oracle_01.sql

CREATE OR REPLACE PROCEDURE pinvalidassign(out_parameter   IN OUT NUMBER)
AS
record_variable       employees%ROWTYPE;

TYPE cursor_type IS REF CURSOR;
cursor1   cursor_type;
cursor2   SYS_REFCURSOR;

TYPE collection_type IS TABLE OF NUMBER INDEX BY VARCHAR(64);
collection_variable     collection_type;

BEGIN
--Record Example
  record_variable.last_name := 'Ortiz';

--Cursor Example
  cursor1 := cursor2;
  
--Collection
  collection_variable('Test') := 5;

--Out Parameter
  out_parameter := 123;
END;

Output Code:

OUT -> Oracle_01.sql

CREATE OR REPLACE PROCEDURE pinvalidassign (out_parameter NUMBER(38, 18))
RETURNS VARIANT
LANGUAGE SQL
COMMENT = '{"origin":"sf_sc","name":"snowconvert","version":{"major":1, "minor":0},{"attributes":{"component":"oracle"}}'
EXECUTE AS CALLER
AS
$$
  DECLARE
    record_variable OBJECT !!!RESOLVE EWI!!! /*** SSC-EWI-0036 - ROWTYPE DATA TYPE CONVERTED TO OBJECT ***/!!! := OBJECT_CONSTRUCT();
--    --** SSC-FDM-0024 - FUNCTIONALITY FOR 'PL REF CURSOR TYPE DEFINITION' IS NOT CURRENTLY SUPPORTED BY SNOWFLAKE SCRIPTING **

--    TYPE cursor_type IS REF CURSOR;
    cursor1_res RESULTSET;
    cursor2_res RESULTSET;
--    --** SSC-FDM-0024 - FUNCTIONALITY FOR 'PL COLLECTION TYPE DEFINITION' IS NOT CURRENTLY SUPPORTED BY SNOWFLAKE SCRIPTING **

--    TYPE collection_type IS TABLE OF NUMBER INDEX BY VARCHAR(64);
    collection_variable VARIANT !!!RESOLVE EWI!!! /*** SSC-EWI-0062 - CUSTOM TYPE 'collection_type' USAGE CHANGED TO VARIANT ***/!!!;
  BEGIN
    --Record Example
    record_variable := OBJECT_INSERT(record_variable, 'LAST_NAME', 'Ortiz', true);

    --Cursor Example
    !!!RESOLVE EWI!!! /*** SSC-EWI-OR0108 - THE FOLLOWING ASSIGNMENT STATEMENT IS NOT SUPPORTED BY SNOWFLAKE SCRIPTING ***/!!!
      cursor1 := :cursor2;

    --Collection
    !!!RESOLVE EWI!!! /*** SSC-EWI-OR0108 - THE FOLLOWING ASSIGNMENT STATEMENT IS NOT SUPPORTED BY SNOWFLAKE SCRIPTING ***/!!!
      collection_variable('Test') := 5;
    --Out Parameter
    out_parameter := 123;
    RETURN out_parameter;
  END;
$$;

Related EWIS

1. SSC-EWI-0036: Data type converted to another data type.

2. SSC-FDM-0024: Functionality is not currently supported by Snowflake Scripting.

3. SSC-EWI-0062: Custom type usage changed to variant.

Recommendations

• Change the variable data type or try to simulate the behavior using Snowflake semi-structured data types.

• If you need more support, you can email us at [e-mail]