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planner: fix some window specific check bug for window function. (#12394) #12404

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merged 3 commits into from
Oct 13, 2019
Merged

planner: fix some window specific check bug for window function. (#12394) #12404

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12bab91
planner: fix some window specific check bug for window function. (#12…
lzmhhh123 Sep 26, 2019
b1d055d
Merge branch 'release-3.0' into cherry-pick-3.0-12394
alivxxx Oct 8, 2019
e95e379
Merge branch 'release-3.0' into cherry-pick-3.0-12394
sre-bot Oct 13, 2019
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5 changes: 4 additions & 1 deletion planner/core/logical_plan_builder.go
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Original file line number Diff line number Diff line change
Expand Up @@ -3310,7 +3310,10 @@ func (b *PlanBuilder) checkOriginWindowSpecs(funcs []*ast.WindowFuncExpr, orderB
if end.Type == ast.Preceding && end.UnBounded {
return ErrWindowFrameEndIllegal.GenWithStackByArgs(getWindowName(spec.Name.O))
}
if start.Type == ast.Following && end.Type == ast.Preceding {
if start.Type == ast.Following && (end.Type == ast.Preceding || end.Type == ast.CurrentRow) {
return ErrWindowFrameIllegal.GenWithStackByArgs(getWindowName(spec.Name.O))
}
if (start.Type == ast.Following || start.Type == ast.CurrentRow) && end.Type == ast.Preceding {
return ErrWindowFrameIllegal.GenWithStackByArgs(getWindowName(spec.Name.O))
}

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12 changes: 12 additions & 0 deletions planner/core/logical_plan_test.go
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Expand Up @@ -2485,6 +2485,18 @@ func (s *testPlanSuite) TestWindowFunction(c *C) {
sql: "SELECT NTH_VALUE(fieldA, -1) OVER (w1 PARTITION BY fieldB ORDER BY fieldB , fieldA ) AS 'ntile', fieldA, fieldB FROM ( SELECT a AS fieldA, b AS fieldB FROM t ) as temp WINDOW w1 AS ( ORDER BY fieldB ASC, fieldA DESC )",
result: "[planner:1210]Incorrect arguments to nth_value",
},
{
sql: "SELECT SUM(a) OVER w AS 'sum' FROM t WINDOW w AS (ROWS BETWEEN 1 FOLLOWING AND CURRENT ROW )",
result: "[planner:3586]Window 'w': frame start or end is negative, NULL or of non-integral type",
},
{
sql: "SELECT SUM(a) OVER w AS 'sum' FROM t WINDOW w AS (ROWS BETWEEN CURRENT ROW AND 1 PRECEDING )",
result: "[planner:3586]Window 'w': frame start or end is negative, NULL or of non-integral type",
},
{
sql: "SELECT SUM(a) OVER w AS 'sum' FROM t WINDOW w AS (ROWS BETWEEN 1 FOLLOWING AND 1 PRECEDING )",
result: "[planner:3586]Window 'w': frame start or end is negative, NULL or of non-integral type",
},
// Test issue 11943
{
sql: "SELECT ROW_NUMBER() OVER (partition by b) + a FROM t",
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