planner: fill plan digest when create binding from existing plan (pin…

…gcap#39557)

ref pingcap#39199

bindinfo/bind_test.go

@@ -1428,14 +1428,23 @@ func TestCreateBindingFromHistory(t *testing.T) {
 			tk.MustExec(bindSQL)
 			planDigest := tk.MustQuery(fmt.Sprintf("select plan_digest from information_schema.statements_summary where query_sample_text = '%s'", bindSQL)).Rows()
 			tk.MustExec(fmt.Sprintf("create session binding from history using plan digest '%s'", planDigest[0][0]))
+			showRes := tk.MustQuery("show bindings").Rows()
+			require.Equal(t, len(showRes), 1)
+			require.Equal(t, planDigest[0][0], showRes[0][10])
 			for _, sql := range testCase.sqls {
 				tk.MustExec(fmt.Sprintf(sql, ""))
 				tk.MustQuery("select @@last_plan_from_binding").Check(testkit.Rows("1"))
 			}
 		}
+		showRes := tk.MustQuery("show bindings").Rows()
+		require.Equal(t, len(showRes), 1)
+		tk.MustExec(fmt.Sprintf("drop binding for sql digest '%s'", showRes[0][9]))
 	}
 
 	// exception cases
 	tk.MustGetErrMsg(fmt.Sprintf("create binding from history using plan digest '%s'", "1"), "can't find any plans for '1'")
 	tk.MustGetErrMsg(fmt.Sprintf("create binding from history using plan digest '%s'", ""), "plan digest is empty")
+	tk.MustExec("create binding for select * from t1, t2 where t1.id = t2.id using select /*+ merge_join(t1, t2) */ * from t1, t2 where t1.id = t2.id")
+	showRes := tk.MustQuery("show bindings").Rows()
+	require.Equal(t, showRes[0][10], "") // plan digest should be nil by create for
 }

executor/bind.go

@@ -128,12 +128,13 @@ func (e *SQLBindExec) createSQLBind() error {
 	}()
 
 	bindInfo := bindinfo.Binding{
-		BindSQL:   e.bindSQL,
-		Charset:   e.charset,
-		Collation: e.collation,
-		Status:    bindinfo.Enabled,
-		Source:    e.source,
-		SQLDigest: e.sqlDigest,
+		BindSQL:    e.bindSQL,
+		Charset:    e.charset,
+		Collation:  e.collation,
+		Status:     bindinfo.Enabled,
+		Source:     e.source,
+		SQLDigest:  e.sqlDigest,
+		PlanDigest: e.planDigest,
 	}
 	record := &bindinfo.BindRecord{
 		OriginalSQL: e.normdOrigSQL,

executor/builder.go

@@ -4817,6 +4817,7 @@ func (b *executorBuilder) buildSQLBindExec(v *plannercore.SQLBindPlan) Executor
 		newStatus:    v.NewStatus,
 		source:       v.Source,
 		sqlDigest:    v.SQLDigest,
+		planDigest:   v.PlanDigest,
 	}
 	return e
 }

planner/core/planbuilder.go

@@ -1071,8 +1071,9 @@ func (b *PlanBuilder) buildCreateBindPlanFromPlanDigest(v *ast.CreateBindingStmt
 		Db:           utilparser.GetDefaultDB(originNode, bindableStmt.Schema),
 		Charset:      bindableStmt.Charset,
 		Collation:    bindableStmt.Collation,
-		SQLDigest:    sqlDigestWithDB.String(),
 		Source:       bindinfo.History,
+		SQLDigest:    sqlDigestWithDB.String(),
+		PlanDigest:   v.PlanDigest,
 	}
 	b.visitInfo = appendVisitInfo(b.visitInfo, mysql.SuperPriv, "", "", "", nil)
 	return p, nil