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planner: DML queries might panic when CTE exists (#46092) #46095

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merged 2 commits into from
Aug 17, 2023
Merged

planner: DML queries might panic when CTE exists (#46092) #46095

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db48915
This is an automated cherry-pick of #46092
winoros Aug 15, 2023
aeb4077
update readme
qw4990 Aug 17, 2023
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2 changes: 1 addition & 1 deletion planner/core/issuetest/BUILD.bazel
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,6 @@ go_test(
srcs = ["planner_issue_test.go"],
flaky = True,
race = "on",
shard_count = 5,
shard_count = 6,
deps = ["//testkit"],
)
8 changes: 8 additions & 0 deletions planner/core/issuetest/planner_issue_test.go
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Expand Up @@ -55,3 +55,11 @@ func TestIssue45758(t *testing.T) {
// result ok
tk.MustExec("UPDATE tb1, (SELECT code AS cid, code, MAX(class) AS class FROM tb2 GROUP BY code) tb3 SET tb1.cid = tb3.cid, tb1.code = tb3.code, tb1.class = tb3.class")
}

func TestIssue46083(t *testing.T) {
store := testkit.CreateMockStore(t)
tk := testkit.NewTestKit(t, store)
tk.MustExec("use test")
tk.MustExec("CREATE TEMPORARY TABLE v0(v1 int)")
tk.MustExec("INSERT INTO v0 WITH ta2 AS (TABLE v0) TABLE ta2 FOR UPDATE OF ta2;")
}
4 changes: 4 additions & 0 deletions planner/core/logical_plan_builder.go
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Expand Up @@ -4165,6 +4165,10 @@ func (b *PlanBuilder) buildSelect(ctx context.Context, sel *ast.SelectStmt) (p L
b.ctx.GetSessionVars().StmtCtx.AppendWarning(err)
}
for _, tName := range l.Tables {
// CTE has no *model.TableInfo, we need to skip it.
if tName.TableInfo == nil {
continue
}
b.ctx.GetSessionVars().StmtCtx.LockTableIDs[tName.TableInfo.ID] = struct{}{}
}
p, err = b.buildSelectLock(p, l)
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