diff --git a/executor/seqtest/prepared_test.go b/executor/seqtest/prepared_test.go index 11dae5e570767..5edbed52b4e13 100644 --- a/executor/seqtest/prepared_test.go +++ b/executor/seqtest/prepared_test.go @@ -420,14 +420,14 @@ func TestPreparedInsert(t *testing.T) { err = counter.Write(pb) require.NoError(t, err) hit := pb.GetCounter().GetValue() - require.Equal(t, float64(1), hit) + require.Equal(t, float64(0), hit) // insert-values-stmt cannot use the plan cache } tk.MustExec(`set @a=3,@b=3; execute stmt_insert using @a, @b;`) if flag { err = counter.Write(pb) require.NoError(t, err) hit := pb.GetCounter().GetValue() - require.Equal(t, float64(2), hit) + require.Equal(t, float64(0), hit) } result := tk.MustQuery("select id, c1 from prepare_test where id = ?", 1) @@ -443,21 +443,21 @@ func TestPreparedInsert(t *testing.T) { err = counter.Write(pb) require.NoError(t, err) hit := pb.GetCounter().GetValue() - require.Equal(t, float64(2), hit) + require.Equal(t, float64(0), hit) } tk.MustExec(`set @a=2; execute stmt_insert_select using @a;`) if flag { err = counter.Write(pb) require.NoError(t, err) hit := pb.GetCounter().GetValue() - require.Equal(t, float64(3), hit) + require.Equal(t, float64(1), hit) } tk.MustExec(`set @a=3; execute stmt_insert_select using @a;`) if flag { err = counter.Write(pb) require.NoError(t, err) hit := pb.GetCounter().GetValue() - require.Equal(t, float64(4), hit) + require.Equal(t, float64(2), hit) } result = tk.MustQuery("select id, c1 from prepare_test where id = ?", 101) diff --git a/planner/core/plan_cache_test.go b/planner/core/plan_cache_test.go index 7a4ac860d8593..a480c583d0434 100644 --- a/planner/core/plan_cache_test.go +++ b/planner/core/plan_cache_test.go @@ -221,6 +221,29 @@ func TestIssue38533(t *testing.T) { tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("0")) } +func TestIgnoreInsertStmt(t *testing.T) { + store := testkit.CreateMockStore(t) + tk := testkit.NewTestKit(t, store) + tk.MustExec("use test") + tk.MustExec("create table t (a int)") + + // do not cache native insert-stmt + tk.MustExec("prepare st from 'insert into t values (1)'") + tk.MustExec("execute st") + tk.MustExec("execute st") + tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("0")) + + // ignore-hint in insert-stmt can work + tk.MustExec("prepare st from 'insert into t select * from t'") + tk.MustExec("execute st") + tk.MustExec("execute st") + tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("1")) + tk.MustExec("prepare st from 'insert /*+ ignore_plan_cache() */ into t select * from t'") + tk.MustExec("execute st") + tk.MustExec("execute st") + tk.MustQuery("select @@last_plan_from_cache").Check(testkit.Rows("0")) +} + func TestIssue38710(t *testing.T) { store := testkit.CreateMockStore(t) tk := testkit.NewTestKit(t, store) diff --git a/planner/core/plan_cacheable_checker.go b/planner/core/plan_cacheable_checker.go index 3412ace379271..041509d224792 100644 --- a/planner/core/plan_cacheable_checker.go +++ b/planner/core/plan_cacheable_checker.go @@ -94,6 +94,21 @@ func (checker *cacheableChecker) Enter(in ast.Node) (out ast.Node, skipChildren return in, true } } + case *ast.InsertStmt: + if node.Select == nil { + // do not cache insert-values-stmt like 'insert into t values (...)' since + // no performance benefit and to save memory. + checker.cacheable = false + checker.reason = "ignore insert-values-stmt" + return in, true + } + for _, hints := range node.TableHints { + if hints.HintName.L == HintIgnorePlanCache { + checker.cacheable = false + checker.reason = "ignore plan cache by hint" + return in, true + } + } case *ast.VariableExpr, *ast.ExistsSubqueryExpr, *ast.SubqueryExpr: checker.cacheable = false checker.reason = "query has sub-queries is un-cacheable" diff --git a/planner/core/plan_cacheable_checker_test.go b/planner/core/plan_cacheable_checker_test.go index 658537bde4188..e87a08592eb16 100644 --- a/planner/core/plan_cacheable_checker_test.go +++ b/planner/core/plan_cacheable_checker_test.go @@ -53,7 +53,9 @@ func TestCacheable(t *testing.T) { tableRefsClause := &ast.TableRefsClause{TableRefs: &ast.Join{Left: &ast.TableSource{Source: tbl}}} // test InsertStmt - stmt = &ast.InsertStmt{Table: tableRefsClause} + stmt = &ast.InsertStmt{Table: tableRefsClause} // insert-values-stmt + require.False(t, core.Cacheable(stmt, is)) + stmt = &ast.InsertStmt{Table: tableRefsClause, Select: &ast.SelectStmt{}} // insert-select-stmt require.True(t, core.Cacheable(stmt, is)) // test DeleteStmt diff --git a/sessiontxn/txn_rc_tso_optimize_test.go b/sessiontxn/txn_rc_tso_optimize_test.go index f321d40340496..3e945778ca107 100644 --- a/sessiontxn/txn_rc_tso_optimize_test.go +++ b/sessiontxn/txn_rc_tso_optimize_test.go @@ -105,7 +105,7 @@ func TestRcTSOCmdCountForPrepareExecuteNormal(t *testing.T) { tk.MustExec("commit") } countTsoRequest, countTsoUseConstant, countWaitTsoOracle := getAllTsoCounter(sctx) - require.Equal(t, uint64(398), countTsoRequest.(uint64)) + require.Equal(t, uint64(496), countTsoRequest.(uint64)) require.Equal(t, uint64(594), countTsoUseConstant.(uint64)) require.Equal(t, uint64(198), countWaitTsoOracle.(uint64)) @@ -137,7 +137,7 @@ func TestRcTSOCmdCountForPrepareExecuteNormal(t *testing.T) { tk.MustExec("commit") } count := sctx.Value(sessiontxn.TsoRequestCount) - require.Equal(t, uint64(594), count) + require.Equal(t, uint64(693), count) } func TestRcTSOCmdCountForPrepareExecuteExtra(t *testing.T) { @@ -234,7 +234,7 @@ func TestRcTSOCmdCountForPrepareExecuteExtra(t *testing.T) { tk.MustExec("commit") } countTsoRequest, countTsoUseConstant, countWaitTsoOracle = getAllTsoCounter(sctx) - require.Equal(t, uint64(16), countTsoRequest.(uint64)) + require.Equal(t, uint64(20), countTsoRequest.(uint64)) require.Equal(t, uint64(5), countTsoUseConstant.(uint64)) require.Equal(t, uint64(5), countWaitTsoOracle.(uint64)) @@ -412,7 +412,7 @@ func TestRcTSOCmdCountForPrepareExecuteExtra(t *testing.T) { require.Nil(t, stmt) tk.MustExec("commit") countTsoRequest, countTsoUseConstant, countWaitTsoOracle = getAllTsoCounter(sctx) - require.Equal(t, uint64(3), countTsoRequest.(uint64)) + require.Equal(t, uint64(4), countTsoRequest.(uint64)) require.Equal(t, uint64(2), countTsoUseConstant.(uint64)) require.Equal(t, 0, countWaitTsoOracle.(int)) tk.MustQuery("SELECT * FROM t1 WHERE id1 = 1").Check(testkit.Rows("1 1 1"))