zhouqingqing / qpmodel

A Relational Optimizer and Executor
MIT License
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fix incorrect handling of case expression #207 #209

Closed zhouruiapple closed 3 years ago

zhouruiapple commented 3 years ago

rewrite @VisitCaseExpr of @SQLParser.cs. add "is not" to nullops of BinExpr. add unit test for simple case searched case.