Re: some testing of MERGE feature

Wed, 09 Jul 2014 05:40:33 -0700 

On 7/9/14 5:26 AM, Rick Hillegas wrote:

Hi Mamta,

An assertion isn't expected, so this is a bug I need to look at.

I've logged DERBY-6652 to track this.

Thanks,
-Rick


Thanks,
-Rick

On 7/7/14 4:25 PM, Mamta Satoor wrote:

Hi Rick,
I did some basic testing of MERGE feature and observed a behavior that I wanted to run by you to see if it the expected behavior. 
I have 2 really simple tables with views defined on them.
CREATE TABLE employee (
employee_id int,
first_name  VARCHAR(20),
last_name   VARCHAR(20),
dept_no     int,
salary      int);
create view v1employee as select * from employee;
INSERT INTO employee VALUES (1, 'Dan', 'Morgan', 10, 100000);
INSERT INTO employee VALUES (2, 'Jack', 'Cline', 20, 100000);
INSERT INTO employee VALUES (3, 'Elizabeth', 'Scott', 20, 50000);
INSERT INTO employee VALUES (4, 'Jackie', 'Stough', 20, 40000);
INSERT INTO employee VALUES (5, 'Richard', 'Foote', 20, 30000);
INSERT INTO employee VALUES (6, 'Joe', 'Johnson', 20, 70000);
INSERT INTO employee VALUES (7, 'Clark', 'Urling', 20, 90000);
CREATE TABLE bonuses (
employee_id int, bonus int DEFAULT 100);
create view v2bonuses as select * from bonuses;
INSERT INTO bonuses (employee_id) VALUES (1);
INSERT INTO bonuses (employee_id) VALUES (2);
INSERT INTO bonuses (employee_id) VALUES (4);
INSERT INTO bonuses (employee_id) VALUES (6);
INSERT INTO bonuses (employee_id) VALUES (7);
I tried using the view as the source in the MERGE statement and got following error. May be I misunderstood it, but I thought views are allowed for source. I tried this on trunk using classes last week. thanks. 
MERGE INTO bonuses B
USING v1employee E
ON B.employee_id = E.employee_id
WHEN MATCHED AND E.dept_no=20 THEN
  UPDATE SET B.bonus = E.salary * 0.1
WHEN NOT MATCHED AND dept_no=20 THEN
  INSERT (employee_id, bonus)
  VALUES (E.employee_id, E.salary * 0.05);
ERROR XJ001: Java exception: 'ASSERT FAILED Column EMPLOYEE.SALARY has illegal MERGE table id: 0: org.apache.derby.shared.common.sanity.AssertFailure'.
java.sql.SQLException: Java exception: 'ASSERT FAILED Column EMPLOYEE.SALARY has illegal MERGE table id: 0: org.apache.derby.shared.common.sanity.AssertFailure'.
at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:107)
at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:133) 

at org.apache.derby.impl.jdbc.Util.seeNextException(Util.java:255)

at org.apache.derby.impl.jdbc.Util.javaException(Util.java:277)
at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(TransactionResourceImpl.java:437)
at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(TransactionResourceImpl.java:353)
at org.apache.derby.impl.jdbc.EmbedConnection.handleException(EmbedConnection.java:2396)
at org.apache.derby.impl.jdbc.ConnectionChild.handleException(ConnectionChild.java:82)
at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:691)
at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:631) 

at org.apache.derby.impl.tools.ij.ij.executeImmediate(ij.java:367)

at org.apache.derby.impl.tools.ij.utilMain.doCatch(utilMain.java:527)
at org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:369) 

at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:245)

at org.apache.derby.impl.tools.ij.Main.go(Main.java:229)

at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:184)

at org.apache.derby.impl.tools.ij.Main.main(Main.java:75)

at org.apache.derby.tools.ij.main(ij.java:59)
Caused by: ERROR XJ001: Java exception: 'ASSERT FAILED Column EMPLOYEE.SALARY has illegal MERGE table id: 0: org.apache.derby.shared.common.sanity.AssertFailure'.
at org.apache.derby.iapi.error.StandardException.newException(StandardException.java:290)
at org.apache.derby.impl.jdbc.SQLExceptionFactory.wrapArgsForTransportAcrossDRDA(SQLExceptionFactory.java:162)
at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:73) 

... 17 more
Caused by: org.apache.derby.shared.common.sanity.AssertFailure: ASSERT FAILED Column EMPLOYEE.SALARY has illegal MERGE table id: 0
at org.apache.derby.shared.common.sanity.SanityManager.ASSERT(SanityManager.java:120)
at org.apache.derby.impl.sql.compile.MatchingClauseNode.getMergeTableID(MatchingClauseNode.java:1495)
at org.apache.derby.impl.sql.compile.MatchingClauseNode.getSelectListOffset(MatchingClauseNode.java:1444)
at org.apache.derby.impl.sql.compile.MatchingClauseNode.useGeneratedScan(MatchingClauseNode.java:1423)
at org.apache.derby.impl.sql.compile.MatchingClauseNode.adjustThenColumns(MatchingClauseNode.java:1380)
at org.apache.derby.impl.sql.compile.MatchingClauseNode.generateInsertUpdateRow(MatchingClauseNode.java:1330)
at org.apache.derby.impl.sql.compile.MatchingClauseNode.generate(MatchingClauseNode.java:1237)
at org.apache.derby.impl.sql.compile.MergeNode.generate(MergeNode.java:1013)
at org.apache.derby.impl.sql.compile.StatementNode.generate(StatementNode.java:317)
at org.apache.derby.impl.sql.GenericStatement.prepMinion(GenericStatement.java:549)
at org.apache.derby.impl.sql.GenericStatement.prepare(GenericStatement.java:99)
at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.prepareInternalStatement(GenericLanguageConnectionContext.java:1113)
at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:682) 

... 9 more

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