sql: remove one row limit in EXISTS subquery #8847
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Gerold103
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According to ANSI, EXISTS is a predicate that tests a given subquery and returns true if it returns more than 0 rows, false otherwise. However, after 2a720d1, EXISTS worked correctly only if there were exactly 0 or 1 rows, and in all other cases it gave an error. This patch makes EXITS work properly. Closes tarantool#8676 NO_DOC=bugfix
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igormunkin
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According to ANSI, EXISTS is a predicate that tests a given subquery and returns true if it returns more than 0 rows, false otherwise. However, before this patch, EXISTS worked correctly only if there were exactly 0 or 1 rows, and in all other cases it gave an error. This patch makes EXITS work properly.
Closes #8676
@TarantoolBot document
Title: EXISTS predicate
The EXISTS predicate in SQL is a predicate that returns true if the given SQL subquery returns at least one row, and false otherwise.
Example: