[ { "Name": "TestSimplifyExpressionByFlag", "Cases": [ { "SQL": "explain select * from t where a is null", "Plan": [ "TableDual_6 0.00 root rows:0" ] }, { "SQL": "explain select * from t where a is not null", "Plan": [ "TableReader_6 10000.00 root data:TableFullScan_5", "└─TableFullScan_5 10000.00 cop[tikv] table:t keep order:false, stats:pseudo" ] }, { "SQL": "explain select * from t where a > -1", "Plan": [ "TableReader_6 10000.00 root data:TableFullScan_5", "└─TableFullScan_5 10000.00 cop[tikv] table:t keep order:false, stats:pseudo" ] }, { "SQL": "explain select * from t where a <= -1", "Plan": [ "TableDual_6 0.00 root rows:0" ] }, { "SQL": "explain select * from t where a < 0", "Plan": [ "TableDual_6 0.00 root rows:0" ] }, { "SQL": "explain select * from t where a >= 0", "Plan": [ "TableReader_6 10000.00 root data:TableFullScan_5", "└─TableFullScan_5 10000.00 cop[tikv] table:t keep order:false, stats:pseudo" ] }, { "SQL": "explain select * from t where a = -1", "Plan": [ "TableDual_6 0.00 root rows:0" ] }, { "SQL": "explain select * from t where a <=> -1", "Plan": [ "TableDual_6 0.00 root rows:0" ] }, { "SQL": "explain select * from t where a != -1", "Plan": [ "TableReader_6 10000.00 root data:TableFullScan_5", "└─TableFullScan_5 10000.00 cop[tikv] table:t keep order:false, stats:pseudo" ] }, { "SQL": "explain select * from t where 0 > a", "Plan": [ "TableDual_6 0.00 root rows:0" ] }, { "SQL": "explain select * from t where 0 <= a", "Plan": [ "TableReader_6 10000.00 root data:TableFullScan_5", "└─TableFullScan_5 10000.00 cop[tikv] table:t keep order:false, stats:pseudo" ] }, { "SQL": "explain select * from t where -1 < a", "Plan": [ "TableReader_6 10000.00 root data:TableFullScan_5", "└─TableFullScan_5 10000.00 cop[tikv] table:t keep order:false, stats:pseudo" ] }, { "SQL": "explain select * from t where -1 >= a", "Plan": [ "TableDual_6 0.00 root rows:0" ] }, { "SQL": "explain select * from t where -1 = a", "Plan": [ "TableDual_6 0.00 root rows:0" ] }, { "SQL": "explain select * from t where -1 <=> a", "Plan": [ "TableDual_6 0.00 root rows:0" ] }, { "SQL": "explain select * from t where -1 != a", "Plan": [ "TableReader_6 10000.00 root data:TableFullScan_5", "└─TableFullScan_5 10000.00 cop[tikv] table:t keep order:false, stats:pseudo" ] }, { "SQL": "explain select * from t where b >= 0", "Plan": [ "TableReader_7 3333.33 root data:Selection_6", "└─Selection_6 3333.33 cop[tikv] ge(test.t.b, 0)", " └─TableFullScan_5 10000.00 cop[tikv] table:t keep order:false, stats:pseudo" ] }, { "SQL": "explain select * from t where b != -1", "Plan": [ "TableReader_7 3333.33 root data:Selection_6", "└─Selection_6 3333.33 cop[tikv] ne(test.t.b, -1)", " └─TableFullScan_5 10000.00 cop[tikv] table:t keep order:false, stats:pseudo" ] }, { "SQL": "explain select * from t where a = 0xFFFFFFFFFFFFFFFF", "Plan": [ "TableReader_7 10.00 root data:Selection_6", "└─Selection_6 10.00 cop[tikv] eq(test.t.a, 18446744073709551615)", " └─TableFullScan_5 10000.00 cop[tikv] table:t keep order:false, stats:pseudo" ] } ] } ]