Views selecting all columns from a single table are not required in Snowflake
Some parts of the output code are omitted for clarity reasons.
Description
Views that only select all columns of a single table and do not have any filtering clauses are not required in Snowflake and may affect performance.
Code Example
Input Code (Oracle):
IN -> Oracle_01.sql
CREATE OR REPLACE VIEW simpleView1
AS
SELECT
*
FROM
simpleTable;
CREATE OR REPLACE VIEW simpleView2
AS
SELECT
*
FROM
simpleTable GROUP BY col1;
Output Code:
OUT -> Oracle_01.sql
CREATE OR REPLACE VIEW simpleView1
COMMENT = '{"origin":"sf_sc","name":"snowconvert","version":{"major":1, "minor":0},{"attributes":{"component":"oracle"}}'
AS
--** SSC-FDM-0001 - VIEWS SELECTING ALL COLUMNS FROM A SINGLE TABLE ARE NOT REQUIRED IN SNOWFLAKE AND MAY IMPACT PERFORMANCE. **
SELECT
*
FROM
simpleTable;
CREATE OR REPLACE VIEW simpleView2
COMMENT = '{"origin":"sf_sc","name":"snowconvert","version":{"major":1, "minor":0},{"attributes":{"component":"oracle"}}'
AS
--** SSC-FDM-0001 - VIEWS SELECTING ALL COLUMNS FROM A SINGLE TABLE ARE NOT REQUIRED IN SNOWFLAKE AND MAY IMPACT PERFORMANCE. **
SELECT
*
FROM
simpleTable
GROUP BY col1;
