Add MERGE query. Support 'UPSERT' with ON CONFLICT clause on INSERT query. Remove default escape char on LIKE and ILIKE. Add GROUPING SETS, CUBE, ROLLUP clauses for GROUP BY.
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Add MERGE query. Support 'UPSERT' with ON CONFLICT clause on INSERT query. Remove default escape char on LIKE and ILIKE. Add GROUPING SETS, CUBE, ROLLUP clauses for GROUP BY.