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Add NULL OR MISSING literal. I'm not sure if having it into 3 words will work with the parser especially with OR in between. If not, we could do such as NULLORMISSING or NULL_OR_MISSING.
Add NULL OR MISSING literal. I'm not sure if having it into 3 words will work with the parser especially with OR in between. If not, we could do such as NULLORMISSING or NULL_OR_MISSING.
Approved by Pasin, we will make "IS NULLORMISSING" as an operator. Being an operator, as opposed to literal, NULLORMISSING cannot appear where an expression is expected. "x IS NULLORMISSING" is legit, whereas "x = NULLORMISSING" is not.