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MCOL-2051: CS uses 'NULL' literal as NULL when UPDATEs varchar field: proxying NULL value. Note: empty strings are still considered NULLs later on.

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Sergey Sedov
2019-04-26 11:10:29 +03:00
committed by sianur
parent e078d701f3
commit 83aad0c7b1
4 changed files with 7 additions and 8 deletions
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3
dbcon/mysql/ha_calpont_impl.cpp
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@ -1044,8 +1044,9 @@ uint32_t doUpdateDelete(THD *thd)
else if ( value->type() == Item::NULL_ITEM )
{
// dmlStmt += "NULL";
columnAssignmentPtr->fScalarExpression = "NULL";
columnAssignmentPtr->fScalarExpression = "";
columnAssignmentPtr->fFromCol = false;
columnAssignmentPtr->fIsNull = true;
}
else if ( value->type() == Item::SUBSELECT_ITEM )
{