Commit 0a8b1791 authored 5 years ago by Nikita Pettik Committed by Kirill Yukhin 5 years ago

sql: introduce type boolean

This patch introduces basic facilities to operate on boolean type:
boolean literals "true" and "false" where true > false; alias to null -
unknown; column type "BOOLEAN" and shortcut "BOOL"; opportunity to
insert and select boolean values from table; OR and AND predicates
accept boolean arguments; CAST operation involving boolean type;
comparison between boolean values (including VDBE sorter routines).

Part of #3648

parent 0f6d6419

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