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[
{
"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"
]
}
]
}
]