[teiid-issues] [JBoss JIRA] (TEIID-5290) NOW() function returns the same value for each call in BEGIN...END block

[dalex dalex (JIRA)]

dalex dalex created TEIID-5290:
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             Summary: NOW() function returns the same value for each call in BEGIN...END block
                 Key: TEIID-5290
                 URL: https://issues.jboss.org/browse/TEIID-5290
             Project: Teiid
          Issue Type: Bug
          Components: Query Engine
    Affects Versions: 10.1
         Environment: teiid-10.1.0 on WildFly Full 11.0.0.Final (WildFly Core 3.0.8.Final)
            Reporter: dalex dalex
            Assignee: Steven Hawkins
            Priority: Blocker


Run the following queries:
{code:sql}
BEGIN
	declare timestamp ts1 = select now();
	DECLARE integer c = 20000;
	WHILE (c > 0) 
		BEGIN
			c= c-1; 
		END
	declare timestamp ts2 = select now();
	select ts1, ts2;
END ;;
{code}
and
{code:sql}
BEGIN
	DECLARE integer c = 20000;
	create local temporary table #tem(ts timestamp);
	WHILE (c > 0) 
		BEGIN
			INSERT INTO #tem VALUES((select NOW()));
			c= c-1; 
		END 
	select * from #tem;
END ;;
{code}
NOW() function returns the same value for each call in BEGIN...END block and it doesn't matter if it is atomic or not.



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