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From "Takeshi Yamamuro (Jira)" <j...@apache.org>
Subject [jira] [Created] (SPARK-29660) Dropping columns and changing column names/types are prohibited in VIEW definition
Date Wed, 30 Oct 2019 13:10:00 GMT
Takeshi Yamamuro created SPARK-29660:
----------------------------------------

             Summary: Dropping columns and changing column names/types are prohibited in VIEW
definition
                 Key: SPARK-29660
                 URL: https://issues.apache.org/jira/browse/SPARK-29660
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
    Affects Versions: 3.0.0
            Reporter: Takeshi Yamamuro


In PostgreSQL, the three DDL syntaxes for VIEW cannot be accepted;
{code:java}
-- should fail
CREATE OR REPLACE VIEW viewtest AS
	SELECT a FROM viewtest_tbl WHERE a <> 20;
ERROR:  cannot drop columns from view
-- should fail
CREATE OR REPLACE VIEW viewtest AS
	SELECT 1, * FROM viewtest_tbl;
ERROR:  cannot change name of view column "a" to "?column?"
-- should fail
CREATE OR REPLACE VIEW viewtest AS
	SELECT a, b::numeric FROM viewtest_tbl;
ERROR:  cannot change data type of view column "b" from integer to numeric
{code}



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