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plan: propagate constant over outer join #7794

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Oct 16, 2018
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6 changes: 3 additions & 3 deletions executor/join_test.go
Original file line number Diff line number Diff line change
Expand Up @@ -876,11 +876,11 @@ func (s *testSuite) TestMergejoinOrder(c *C) {
tk.MustExec("insert into t2 select a*100, b*100 from t1;")

tk.MustQuery("explain select /*+ TIDB_SMJ(t2) */ * from t1 left outer join t2 on t1.a=t2.a and t1.a!=3 order by t1.a;").Check(testkit.Rows(
"MergeJoin_15 12500.00 root left outer join, left key:test.t1.a, right key:test.t2.a, left cond:[ne(test.t1.a, 3)]",
"MergeJoin_15 10000.00 root left outer join, left key:test.t1.a, right key:test.t2.a, left cond:[ne(test.t1.a, 3)]",
"├─TableReader_11 10000.00 root data:TableScan_10",
"│ └─TableScan_10 10000.00 cop table:t1, range:[-inf,+inf], keep order:true, stats:pseudo",
"└─TableReader_13 10000.00 root data:TableScan_12",
" └─TableScan_12 10000.00 cop table:t2, range:[-inf,+inf], keep order:true, stats:pseudo",
"└─TableReader_13 6666.67 root data:TableScan_12",
" └─TableScan_12 6666.67 cop table:t2, range:[-inf,3), (3,+inf], keep order:true, stats:pseudo",
))

tk.MustExec("set @@tidb_max_chunk_size=1")
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