Variable FULL_QUERY_ALLOWED_KEYWORDS`Const`

FULL_QUERY_ALLOWED_KEYWORDS: readonly [
    "EXISTS",
    "ANY",
    "ALL",
    "SOME",
    "UNION",
    "INTERSECT",
    "EXCEPT",
    "IF",
    "FOR",
] = ...

Keywords from DANGEROUS_SQL_KEYWORDS that are legitimate in full SELECT queries. These are only unblocked when context is 'full_query'.