Quick poll: should @PostgreSQL remove support for postfix operators in expressions, or keep them? Their existence makes parsing a lot harder.
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Ok so when you say harder. What does this mean? Does it equate to a meaningful performance penalty ? Does having it make it impossible to add something else we might want ?
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Having postfix operators forces us to put various subtle hacks in the parser. These then occasionally bite back either when trying to add new syntax or for edge cases of existing syntax. e.g. select 'a' || escape || 'b' from (values ('\')) v(escape);
End of conversation
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