*: enable gosimple linter

Makefile

@@ -57,6 +57,7 @@ check-static: tools/bin/golangci-lint
 	  --enable=unused \
 	  --enable=structcheck \
 	  --enable=deadcode \
+	  --enable=gosimple \
 	  $$($(PACKAGE_DIRECTORIES))
 
 check-slow:tools/bin/gometalinter tools/bin/gosec

ddl/db_test.go

@@ -2280,10 +2280,8 @@ func (s *testDBSuite6) TestDropColumn(c *C) {
 		testddlutil.ExecMultiSQLInGoroutine(c, s.store, "drop_col_db", []string{"insert into t2 set c1 = 1, c2 = 1, c3 = 1, c4 = 1"}, dmlDone)
 	}
 	for i := 0; i < num; i++ {
-		select {
-		case err := <-ddlDone:
-			c.Assert(err, IsNil, Commentf("err:%v", errors.ErrorStack(err)))
-		}
+		err := <-ddlDone
+		c.Assert(err, IsNil, Commentf("err:%v", errors.ErrorStack(err)))
 	}
 
 	// Test for drop partition table column.
@@ -6575,7 +6573,7 @@ func (s *testSerialDBSuite) TestModifyColumnTypeWhenInterception(c *C) {
 
 	count := defaultBatchSize * 4
 	// Add some rows.
-	dml := fmt.Sprintf("insert into t values")
+	dml := "insert into t values"
 	for i := 1; i <= count; i++ {
 		dml += fmt.Sprintf("(%d, %f)", i, 11.22)
 		if i != count {

ddl/ddl_api.go

@@ -4040,7 +4040,7 @@ func checkAutoRandom(tableInfo *model.TableInfo, originCol *table.Column, specNe
 				autoid.MaxAutoRandomBits, newRandBits, specNewColumn.Name.Name.O)
 			return 0, ErrInvalidAutoRandom.GenWithStackByArgs(errMsg)
 		}
-		break // Increasing auto_random shard bits is allowed.
+		// increasing auto_random shard bits is allowed.
 	case oldRandBits > newRandBits:
 		if newRandBits == 0 {
 			return 0, ErrInvalidAutoRandom.GenWithStackByArgs(autoid.AutoRandomAlterErrMsg)

ddl/serial_test.go

@@ -503,15 +503,15 @@ func (s *testSerialSuite) TestCreateTableWithLike(c *C) {
 
 	// for failure table cases
 	tk.MustExec("use ctwl_db")
-	failSQL := fmt.Sprintf("create table t1 like test_not_exist.t")
+	failSQL := "create table t1 like test_not_exist.t"
 	tk.MustGetErrCode(failSQL, mysql.ErrNoSuchTable)
-	failSQL = fmt.Sprintf("create table t1 like test.t_not_exist")
+	failSQL = "create table t1 like test.t_not_exist"
 	tk.MustGetErrCode(failSQL, mysql.ErrNoSuchTable)
-	failSQL = fmt.Sprintf("create table t1 (like test_not_exist.t)")
+	failSQL = "create table t1 (like test_not_exist.t)"
 	tk.MustGetErrCode(failSQL, mysql.ErrNoSuchTable)
-	failSQL = fmt.Sprintf("create table test_not_exis.t1 like ctwl_db.t")
+	failSQL = "create table test_not_exis.t1 like ctwl_db.t"
 	tk.MustGetErrCode(failSQL, mysql.ErrBadDB)
-	failSQL = fmt.Sprintf("create table t1 like ctwl_db.t")
+	failSQL = "create table t1 like ctwl_db.t"
 	tk.MustGetErrCode(failSQL, mysql.ErrTableExists)
 
 	// test failure for wrong object cases

executor/aggfuncs/func_percentile.go

@@ -53,9 +53,7 @@ func (e *basePercentile) AllocPartialResult() (pr PartialResult, memDelta int64)
 	return
 }
 
-func (e *basePercentile) ResetPartialResult(pr PartialResult) {
-	return
-}
+func (e *basePercentile) ResetPartialResult(pr PartialResult) {}
 
 func (e *basePercentile) UpdatePartialResult(sctx sessionctx.Context, rowsInGroup []chunk.Row, pr PartialResult) (memDelta int64, err error) {
 	return

executor/concurrent_map.go

@@ -56,7 +56,6 @@ func (m concurrentMap) Insert(key uint64, value *entry) {
 		shard.items[key] = value
 	}
 	shard.Unlock()
-	return
 }
 
 // UpsertCb : Callback to return new element to be inserted into the map

executor/delete.go

@@ -188,10 +188,7 @@ func (e *DeleteExec) removeRowsInTblRowMap(tblRowMap tableRowMapType) error {
 		var err error
 		rowMap.Range(func(h kv.Handle, val interface{}) bool {
 			err = e.removeRow(e.ctx, e.tblID2Table[id], h, val.([]types.Datum))
-			if err != nil {
-				return false
-			}
-			return true
+			return err == nil
 		})
 		if err != nil {
 			return err

executor/executor_test.go

@@ -5809,7 +5809,7 @@ func (s *testRecoverTable) TestRecoverTable(c *C) {
 	// Test for recover one table multiple time.
 	tk.MustExec("drop table t_recover")
 	tk.MustExec("flashback table t_recover to t_recover_tmp")
-	_, err = tk.Exec(fmt.Sprintf("recover table t_recover"))
+	_, err = tk.Exec("recover table t_recover")
 	c.Assert(infoschema.ErrTableExists.Equal(err), IsTrue)
 
 	gcEnable, err := gcutil.CheckGCEnable(tk.Se)
@@ -5876,7 +5876,7 @@ func (s *testRecoverTable) TestFlashbackTable(c *C) {
 	tk.MustQuery("select a,_tidb_rowid from t_flashback2;").Check(testkit.Rows("1 1", "2 2", "3 3", "4 5001", "5 5002", "6 5003", "7 10001", "8 10002", "9 10003"))
 
 	// Test for flashback one table multiple time.
-	_, err = tk.Exec(fmt.Sprintf("flashback table t_flashback to t_flashback4"))
+	_, err = tk.Exec("flashback table t_flashback to t_flashback4")
 	c.Assert(infoschema.ErrTableExists.Equal(err), IsTrue)
 
 	// Test for flashback truncated table to new table.

executor/explainfor_test.go

@@ -181,11 +181,11 @@ func (s *testSuite) TestExplainMemTablePredicate(c *C) {
 
 func (s *testSuite) TestExplainClusterTable(c *C) {
 	tk := testkit.NewTestKitWithInit(c, s.store)
-	tk.MustQuery(fmt.Sprintf("desc select * from information_schema.cluster_config where type in ('tikv', 'tidb')")).Check(testkit.Rows(
+	tk.MustQuery("desc select * from information_schema.cluster_config where type in ('tikv', 'tidb')").Check(testkit.Rows(
 		`MemTableScan_5 10000.00 root table:CLUSTER_CONFIG node_types:["tidb","tikv"]`))
-	tk.MustQuery(fmt.Sprintf("desc select * from information_schema.cluster_config where instance='192.168.1.7:2379'")).Check(testkit.Rows(
+	tk.MustQuery("desc select * from information_schema.cluster_config where instance='192.168.1.7:2379'").Check(testkit.Rows(
 		`MemTableScan_5 10000.00 root table:CLUSTER_CONFIG instances:["192.168.1.7:2379"]`))
-	tk.MustQuery(fmt.Sprintf("desc select * from information_schema.cluster_config where type='tidb' and instance='192.168.1.7:2379'")).Check(testkit.Rows(
+	tk.MustQuery("desc select * from information_schema.cluster_config where type='tidb' and instance='192.168.1.7:2379'").Check(testkit.Rows(
 		`MemTableScan_5 10000.00 root table:CLUSTER_CONFIG node_types:["tidb"], instances:["192.168.1.7:2379"]`))
 }
 
@@ -203,11 +203,11 @@ func (s *testSuite) TestInspectionResultTable(c *C) {
 
 func (s *testSuite) TestInspectionRuleTable(c *C) {
 	tk := testkit.NewTestKitWithInit(c, s.store)
-	tk.MustQuery(fmt.Sprintf("desc select * from information_schema.inspection_rules where type='inspection'")).Check(testkit.Rows(
+	tk.MustQuery("desc select * from information_schema.inspection_rules where type='inspection'").Check(testkit.Rows(
 		`MemTableScan_5 10000.00 root table:INSPECTION_RULES node_types:["inspection"]`))
-	tk.MustQuery(fmt.Sprintf("desc select * from information_schema.inspection_rules where type='inspection' or type='summary'")).Check(testkit.Rows(
+	tk.MustQuery("desc select * from information_schema.inspection_rules where type='inspection' or type='summary'").Check(testkit.Rows(
 		`MemTableScan_5 10000.00 root table:INSPECTION_RULES node_types:["inspection","summary"]`))
-	tk.MustQuery(fmt.Sprintf("desc select * from information_schema.inspection_rules where type='inspection' and type='summary'")).Check(testkit.Rows(
+	tk.MustQuery("desc select * from information_schema.inspection_rules where type='inspection' and type='summary'").Check(testkit.Rows(
 		`MemTableScan_5 10000.00 root table:INSPECTION_RULES skip_request: true`))
 }
 
@@ -355,12 +355,12 @@ func (s *testPrepareSerialSuite) TestExplainDotForQuery(c *C) {
 
 func (s *testSuite) TestExplainTableStorage(c *C) {
 	tk := testkit.NewTestKitWithInit(c, s.store)
-	tk.MustQuery(fmt.Sprintf("desc select * from information_schema.TABLE_STORAGE_STATS where TABLE_SCHEMA = 'information_schema'")).Check(testkit.Rows(
-		fmt.Sprintf("MemTableScan_5 10000.00 root table:TABLE_STORAGE_STATS schema:[\"information_schema\"]")))
-	tk.MustQuery(fmt.Sprintf("desc select * from information_schema.TABLE_STORAGE_STATS where TABLE_NAME = 'schemata'")).Check(testkit.Rows(
-		fmt.Sprintf("MemTableScan_5 10000.00 root table:TABLE_STORAGE_STATS table:[\"schemata\"]")))
-	tk.MustQuery(fmt.Sprintf("desc select * from information_schema.TABLE_STORAGE_STATS where TABLE_SCHEMA = 'information_schema' and TABLE_NAME = 'schemata'")).Check(testkit.Rows(
-		fmt.Sprintf("MemTableScan_5 10000.00 root table:TABLE_STORAGE_STATS schema:[\"information_schema\"], table:[\"schemata\"]")))
+	tk.MustQuery("desc select * from information_schema.TABLE_STORAGE_STATS where TABLE_SCHEMA = 'information_schema'").Check(testkit.Rows(
+		"MemTableScan_5 10000.00 root table:TABLE_STORAGE_STATS schema:[\"information_schema\"]"))
+	tk.MustQuery("desc select * from information_schema.TABLE_STORAGE_STATS where TABLE_NAME = 'schemata'").Check(testkit.Rows(
+		"MemTableScan_5 10000.00 root table:TABLE_STORAGE_STATS table:[\"schemata\"]"))
+	tk.MustQuery("desc select * from information_schema.TABLE_STORAGE_STATS where TABLE_SCHEMA = 'information_schema' and TABLE_NAME = 'schemata'").Check(testkit.Rows(
+		"MemTableScan_5 10000.00 root table:TABLE_STORAGE_STATS schema:[\"information_schema\"], table:[\"schemata\"]"))
 }
 
 func (s *testSuite) TestInspectionSummaryTable(c *C) {

executor/grant_test.go

@@ -68,7 +68,7 @@ func (s *testSuite3) TestGrantDBScope(c *C) {
 	createUserSQL := `CREATE USER 'testDB'@'localhost' IDENTIFIED BY '123';`
 	tk.MustExec(createUserSQL)
 	// Make sure all the db privs for new user is empty.
-	sql := fmt.Sprintf("SELECT * FROM mysql.db WHERE User=\"testDB\" and host=\"localhost\"")
+	sql := `SELECT * FROM mysql.db WHERE User="testDB" and host="localhost"`
 	tk.MustQuery(sql).Check(testkit.Rows())
 
 	// Grant each priv to the user.
@@ -101,7 +101,7 @@ func (s *testSuite3) TestWithGrantOption(c *C) {
 	createUserSQL := `CREATE USER 'testWithGrant'@'localhost' IDENTIFIED BY '123';`
 	tk.MustExec(createUserSQL)
 	// Make sure all the db privs for new user is empty.
-	sql := fmt.Sprintf("SELECT * FROM mysql.db WHERE User=\"testWithGrant\" and host=\"localhost\"")
+	sql := `SELECT * FROM mysql.db WHERE User="testWithGrant" and host="localhost"`
 	tk.MustQuery(sql).Check(testkit.Rows())
 
 	// Grant select priv to the user, with grant option.

executor/infoschema_reader.go

@@ -1856,7 +1856,6 @@ func (e *memtableRetriever) dataForTableTiFlashReplica(ctx sessionctx.Context, s
 		}
 	}
 	e.rows = rows
-	return
 }
 
 func (e *memtableRetriever) setDataForStatementsSummary(ctx sessionctx.Context, tableName string) error {

executor/insert_test.go

@@ -426,7 +426,7 @@ func (s *testSuite3) TestInsertDateTimeWithTimeZone(c *C) {
 	tk.MustExec("drop table if exists t")
 	tk.MustExec("create table t (ts timestamp)")
 	tk.MustExec("insert into t values ('2020-10-22T12:00:00Z'), ('2020-10-22T13:00:00Z'), ('2020-10-22T14:00:00Z')")
-	tk.MustQuery(fmt.Sprintf("select count(*) from t where ts > '2020-10-22T12:00:00Z'")).Check(testkit.Rows("2"))
+	tk.MustQuery("select count(*) from t where ts > '2020-10-22T12:00:00Z'").Check(testkit.Rows("2"))
 
 	// test for datetime with fsp
 	fspCases := []struct {

executor/join.go

@@ -1078,7 +1078,7 @@ func (e *joinRuntimeStats) String() string {
 		if e.cache.useCache {
 			buf.WriteString(fmt.Sprintf(", cache:ON, cacheHitRatio:%.3f%%", e.cache.hitRatio*100))
 		} else {
-			buf.WriteString(fmt.Sprintf(", cache:OFF"))
+			buf.WriteString(", cache:OFF")
 		}
 	}
 	if e.hasHashStat {

executor/memtable_reader.go

@@ -230,9 +230,9 @@ func fetchClusterConfig(sctx sessionctx.Context, nodeTypes, nodeAddrs set.String
 						continue
 					}
 					var str string
-					switch val.(type) {
+					switch val := val.(type) {
 					case string: // remove quotes
-						str = val.(string)
+						str = val
 					default:
 						tmp, err := json.Marshal(val)
 						if err != nil {

executor/merge_join_test.go

@@ -277,7 +277,6 @@ func (s *testSerialSuite1) TestShuffleMergeJoinInDisk(c *C) {
 	c.Assert(tk.Se.GetSessionVars().StmtCtx.MemTracker.MaxConsumed(), Greater, int64(0))
 	c.Assert(tk.Se.GetSessionVars().StmtCtx.DiskTracker.BytesConsumed(), Equals, int64(0))
 	c.Assert(tk.Se.GetSessionVars().StmtCtx.DiskTracker.MaxConsumed(), Greater, int64(0))
-	return
 }
 func (s *testSerialSuite1) TestMergeJoinInDisk(c *C) {
 	defer config.RestoreFunc()()
@@ -313,7 +312,6 @@ func (s *testSerialSuite1) TestMergeJoinInDisk(c *C) {
 	c.Assert(tk.Se.GetSessionVars().StmtCtx.MemTracker.MaxConsumed(), Greater, int64(0))
 	c.Assert(tk.Se.GetSessionVars().StmtCtx.DiskTracker.BytesConsumed(), Equals, int64(0))
 	c.Assert(tk.Se.GetSessionVars().StmtCtx.DiskTracker.MaxConsumed(), Greater, int64(0))
-	return
 }
 
 func (s *testSuite2) TestMergeJoin(c *C) {
@@ -726,6 +724,7 @@ func (s *testSuite2) TestMergeJoinDifferentTypes(c *C) {
 }
 
 // TestVectorizedMergeJoin is used to test vectorized merge join with some corner cases.
+//nolint:gosimple // generates false positive fmt.Sprintf warnings which keep aligned
 func (s *testSuiteJoin3) TestVectorizedMergeJoin(c *C) {
 	tk := testkit.NewTestKit(c, s.store)
 	tk.MustExec("use test")
@@ -841,6 +840,7 @@ func (s *testSuiteJoin3) TestVectorizedMergeJoin(c *C) {
 }
 
 // TestVectorizedShuffleMergeJoin is used to test vectorized shuffle merge join with some corner cases.
+//nolint:gosimple // generates false positive fmt.Sprintf warnings which keep aligned
 func (s *testSuiteJoin3) TestVectorizedShuffleMergeJoin(c *C) {
 	tk := testkit.NewTestKit(c, s.store)
 	tk.MustExec("set @@session.tidb_merge_join_concurrency = 4;")

executor/parallel_apply_test.go

@@ -43,7 +43,6 @@ func checkApplyPlan(c *C, tk *testkit.TestKit, sql string, parallel int) {
 		}
 	}
 	c.Assert(containApply, IsTrue)
-	return
 }
 
 func (s *testSuite) TestParallelApply(c *C) {

executor/partition_table_test.go

@@ -263,7 +263,7 @@ func (s *partitionTableSuite) TestBatchGetandPointGetwithHashPartition(c *C) {
 	}
 
 	// test empty PointGet
-	queryHash := fmt.Sprintf("select a from thash where a=200")
+	queryHash := "select a from thash where a=200"
 	c.Assert(tk.HasPlan(queryHash, "Point_Get"), IsTrue) // check if PointGet is used
 	tk.MustQuery(queryHash).Check(testkit.Rows())
 

executor/show.go

@@ -862,10 +862,10 @@ func ConstructResultOfShowCreateTable(ctx sessionctx.Context, tableInfo *model.T
 	}
 
 	if pkCol != nil {
-		// If PKIsHanle, pk info is not in tb.Indices(). We should handle it here.
+		// If PKIsHandle, pk info is not in tb.Indices(). We should handle it here.
 		buf.WriteString(",\n")
 		fmt.Fprintf(buf, "  PRIMARY KEY (%s)", stringutil.Escape(pkCol.Name.O, sqlMode))
-		buf.WriteString(fmt.Sprintf(" /*T![clustered_index] CLUSTERED */"))
+		buf.WriteString(" /*T![clustered_index] CLUSTERED */")
 	}
 
 	publicIndices := make([]*model.IndexInfo, 0, len(tableInfo.Indices))
@@ -906,9 +906,9 @@ func ConstructResultOfShowCreateTable(ctx sessionctx.Context, tableInfo *model.T
 		}
 		if idxInfo.Primary {
 			if tableInfo.PKIsHandle || tableInfo.IsCommonHandle {
-				buf.WriteString(fmt.Sprintf(" /*T![clustered_index] CLUSTERED */"))
+				buf.WriteString(" /*T![clustered_index] CLUSTERED */")
 			} else {
-				buf.WriteString(fmt.Sprintf(" /*T![clustered_index] NONCLUSTERED */"))
+				buf.WriteString(" /*T![clustered_index] NONCLUSTERED */")
 			}
 		}
 		if i != len(publicIndices)-1 {

expression/integration_test.go

@@ -5833,7 +5833,7 @@ func (s *testIntegrationSuite) TestDecodetoChunkReuse(c *C) {
 	tk.MustExec("create table chk (a int,b varchar(20))")
 	for i := 0; i < 200; i++ {
 		if i%5 == 0 {
-			tk.MustExec(fmt.Sprintf("insert chk values (NULL,NULL)"))
+			tk.MustExec("insert chk values (NULL,NULL)")
 			continue
 		}
 		tk.MustExec(fmt.Sprintf("insert chk values (%d,'%s')", i, strconv.Itoa(i)))

go.mod

@@ -82,7 +82,7 @@ require (
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 	gopkg.in/yaml.v3 v3.0.0-20200615113413-eeeca48fe776 // indirect
-	honnef.co/go/tools v0.1.3 // indirect
+	honnef.co/go/tools v0.1.4 // indirect
 	modernc.org/mathutil v1.2.2 // indirect
 	sourcegraph.com/sourcegraph/appdash v0.0.0-20190731080439-ebfcffb1b5c0
 	sourcegraph.com/sourcegraph/appdash-data v0.0.0-20151005221446-73f23eafcf67

go.sum

@@ -500,7 +500,6 @@ github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQD
 github.com/sasha-s/go-deadlock v0.2.0/go.mod h1:StQn567HiB1fF2yJ44N9au7wOhrPS3iZqiDbRupzT10=
 github.com/satori/go.uuid v1.2.0/go.mod h1:dA0hQrYB0VpLJoorglMZABFdXlWrHn1NEOzdhQKdks0=
 github.com/sergi/go-diff v1.0.1-0.20180205163309-da645544ed44/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
-github.com/sergi/go-diff v1.1.0 h1:we8PVUC3FE2uYfodKH/nBHMSetSfHDR6scGdBi+erh0=
 github.com/sergi/go-diff v1.1.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
 github.com/shirou/gopsutil v2.19.10+incompatible/go.mod h1:5b4v6he4MtMOwMlS0TUMTu2PcXUg8+E1lC7eC3UO/RA=
 github.com/shirou/gopsutil v3.21.2+incompatible h1:U+YvJfjCh6MslYlIAXvPtzhW3YZEtc9uncueUNpD/0A=
@@ -933,8 +932,8 @@ honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
 honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-honnef.co/go/tools v0.1.3 h1:qTakTkI6ni6LFD5sBwwsdSO+AQqbSIxOauHTTQKZ/7o=
-honnef.co/go/tools v0.1.3/go.mod h1:NgwopIslSNH47DimFoV78dnkksY2EFtX0ajyb3K/las=
+honnef.co/go/tools v0.1.4 h1:SadWOkti5uVN1FAMgxn165+Mw00fuQKyk4Gyn/inxNQ=
+honnef.co/go/tools v0.1.4/go.mod h1:NgwopIslSNH47DimFoV78dnkksY2EFtX0ajyb3K/las=
 k8s.io/klog v1.0.0/go.mod h1:4Bi6QPql/J/LkTDqv7R/cd3hPo4k2DG6Ptcz060Ez5I=
 modernc.org/mathutil v1.2.2 h1:+yFk8hBprV+4c0U9GjFtL+dV3N8hOJ8JCituQcMShFY=
 modernc.org/mathutil v1.2.2/go.mod h1:mZW8CKdRPY1v87qxC/wUdX5O1qDzXMP5TH3wjfpga6E=

infoschema/metrics_schema.go

@@ -100,17 +100,9 @@ func (def *MetricTableDef) genColumnInfos() []columnInfo {
 // GenPromQL generates the promQL.
 func (def *MetricTableDef) GenPromQL(sctx sessionctx.Context, labels map[string]set.StringSet, quantile float64) string {
 	promQL := def.PromQL
-	if strings.Contains(promQL, promQLQuantileKey) {
-		promQL = strings.Replace(promQL, promQLQuantileKey, strconv.FormatFloat(quantile, 'f', -1, 64), -1)
-	}
-
-	if strings.Contains(promQL, promQLLabelConditionKey) {
-		promQL = strings.Replace(promQL, promQLLabelConditionKey, def.genLabelCondition(labels), -1)
-	}
-
-	if strings.Contains(promQL, promQRangeDurationKey) {
-		promQL = strings.Replace(promQL, promQRangeDurationKey, strconv.FormatInt(sctx.GetSessionVars().MetricSchemaRangeDuration, 10)+"s", -1)
-	}
+	promQL = strings.Replace(promQL, promQLQuantileKey, strconv.FormatFloat(quantile, 'f', -1, 64), -1)
+	promQL = strings.Replace(promQL, promQLLabelConditionKey, def.genLabelCondition(labels), -1)
+	promQL = strings.Replace(promQL, promQRangeDurationKey, strconv.FormatInt(sctx.GetSessionVars().MetricSchemaRangeDuration, 10)+"s", -1)
 	return promQL
 }
 

planner/cascades/implementation_rules.go

@@ -95,10 +95,7 @@ type ImplTableDual struct {
 
 // Match implements ImplementationRule Match interface.
 func (r *ImplTableDual) Match(expr *memo.GroupExpr, prop *property.PhysicalProperty) (matched bool) {
-	if !prop.IsEmpty() {
-		return false
-	}
-	return true
+	return prop.IsEmpty()
 }
 
 // OnImplement implements ImplementationRule OnImplement interface.
@@ -116,10 +113,7 @@ type ImplMemTableScan struct {
 
 // Match implements ImplementationRule Match interface.
 func (r *ImplMemTableScan) Match(expr *memo.GroupExpr, prop *property.PhysicalProperty) (matched bool) {
-	if !prop.IsEmpty() {
-		return false
-	}
-	return true
+	return prop.IsEmpty()
 }
 
 // OnImplement implements ImplementationRule OnImplement interface.

planner/cascades/transformation_rules.go

@@ -1503,10 +1503,7 @@ func NewRuleMergeAggregationProjection() Transformation {
 // Match implements Transformation interface.
 func (r *MergeAggregationProjection) Match(old *memo.ExprIter) bool {
 	proj := old.Children[0].GetExpr().ExprNode.(*plannercore.LogicalProjection)
-	if plannercore.ExprsHasSideEffects(proj.Exprs) {
-		return false
-	}
-	return true
+	return !plannercore.ExprsHasSideEffects(proj.Exprs)
 }
 
 // OnTransform implements Transformation interface.

planner/core/exhaust_physical_plans.go

@@ -1416,6 +1416,7 @@ func (ijHelper *indexJoinBuildHelper) updateBestChoice(ranges []*ranger.Range, p
 
 func (ijHelper *indexJoinBuildHelper) buildTemplateRange(matchedKeyCnt int, eqAndInFuncs []expression.Expression, nextColRange []*ranger.Range, haveExtraCol bool) (ranges []*ranger.Range, emptyRange bool, err error) {
 	pointLength := matchedKeyCnt + len(eqAndInFuncs)
+	//nolint:gosimple // false positive unnecessary nil check
 	if nextColRange != nil {
 		for _, colRan := range nextColRange {
 			// The range's exclude status is the same with last col's.