SELECT alias AS name\nFROM \n(\n SELECT name AS alias\n FROM system.settings\n WHERE alias = \'enable_optimize_predicate_expression\'\n)\nANY INNER JOIN \n(\n SELECT name\n FROM system.settings\n) USING (name)\nWHERE name = \'enable_optimize_predicate_expression\'
enable_optimize_predicate_expression
1 val11 val21 val31
SELECT ccc\nFROM \n(\n SELECT 1 AS ccc\n WHERE 0\n UNION ALL\n SELECT ccc\n FROM \n (\n SELECT 2 AS ccc\n )\n ANY INNER JOIN \n (\n SELECT 2 AS ccc\n ) USING (ccc)\n WHERE ccc > 1\n)\nWHERE ccc > 1
2
SELECT \n ts, \n id, \n id_b, \n b.ts, \n b.id, \n id_c\nFROM \n(\n SELECT \n ts, \n id, \n id_b\n FROM A\n WHERE ts <= toDateTime(\'1970-01-01 03:00:00\')\n) AS a\nALL LEFT JOIN B AS b ON b.id = id_b\nWHERE ts <= toDateTime(\'1970-01-01 03:00:00\')
SELECT \n ts AS `--a.ts`, \n id AS `--a.id`, \n id_b AS `--a.id_b`, \n b.ts AS `--b.ts`, \n b.id AS `--b.id`, \n id_c AS `--b.id_c`\nFROM \n(\n SELECT \n ts, \n id, \n id_b\n FROM A\n WHERE ts <= toDateTime(\'1970-01-01 03:00:00\')\n) AS a\nALL LEFT JOIN B AS b ON `--b.id` = `--a.id_b`\nWHERE `--a.ts` <= toDateTime(\'1970-01-01 03:00:00\')