diff --git a/circle.yml b/circle.yml
index 3063ac9d..c5437881 100644
--- a/circle.yml
+++ b/circle.yml
@@ -2,7 +2,6 @@ dependencies:
   override:
     # './...' is a relative pattern which means all subdirectories
     - go get -t -d -v ./...
-    - go get -t -d -v github.com/go-xorm/tests
     - go get -u github.com/go-xorm/core
     - go get -u github.com/go-xorm/builder
     - go build -v
@@ -21,9 +20,13 @@ database:
 test:
   override:
     # './...' is a relative pattern which means all subdirectories
-    - go test -v -race -db="sqlite3::mysql::postgres" -conn_str="./test.db::root:@/xorm_test::dbname=xorm_test sslmode=disable" -coverprofile=coverage.txt -covermode=atomic
-    - cd /home/ubuntu/.go_workspace/src/github.com/go-xorm/tests && ./sqlite3.sh
-    - cd /home/ubuntu/.go_workspace/src/github.com/go-xorm/tests && ./mysql.sh
-    - cd /home/ubuntu/.go_workspace/src/github.com/go-xorm/tests && ./postgres.sh
+    - go test -v -race -db="sqlite3" -conn_str="./test.db" -coverprofile=coverage1.txt -covermode=atomic
+    - go test -v -race -db="mysql" -conn_str="root:@/xorm_test" -coverprofile=coverage2.txt -covermode=atomic
+    - go test -v -race -db="postgres" -conn_str="dbname=xorm_test sslmode=disable" -coverprofile=coverage3.txt -covermode=atomic
+    - go test -v -race -db="sqlite3" -conn_str="./test.db" -quote=2 -coverprofile=coverage4.txt -covermode=atomic
+    - go test -v -race -db="mysql" -conn_str="root:@/xorm_test" -quote=2 -coverprofile=coverage5.txt -covermode=atomic
+    - go test -v -race -db="postgres" -conn_str="dbname=xorm_test sslmode=disable" -quote=2 -coverprofile=coverage6.txt -covermode=atomic
+    - go get github.com/wadey/gocovmerge
+    - gocovmerge coverage1.txt coverage2.txt coverage3.txt coverage4.txt coverage5.txt coverage6.txt > coverage.txt
   post:
     - bash <(curl -s https://codecov.io/bash)
\ No newline at end of file
diff --git a/dialect_mssql.go b/dialect_mssql.go
index 6d2291dc..e1be1991 100644
--- a/dialect_mssql.go
+++ b/dialect_mssql.go
@@ -277,7 +277,7 @@ func (db *mssql) SupportInsertMany() bool {
 }
 
 func (db *mssql) IsReserved(name string) bool {
-	_, ok := mssqlReservedWords[name]
+	_, ok := mssqlReservedWords[strings.ToUpper(name)]
 	return ok
 }
 
diff --git a/dialect_mysql.go b/dialect_mysql.go
index 99100b23..ad41c772 100644
--- a/dialect_mysql.go
+++ b/dialect_mysql.go
@@ -249,7 +249,7 @@ func (db *mysql) SupportInsertMany() bool {
 }
 
 func (db *mysql) IsReserved(name string) bool {
-	_, ok := mysqlReservedWords[name]
+	_, ok := mysqlReservedWords[strings.ToUpper(name)]
 	return ok
 }
 
diff --git a/dialect_oracle.go b/dialect_oracle.go
index ac0081b3..e7f5b5f4 100644
--- a/dialect_oracle.go
+++ b/dialect_oracle.go
@@ -547,7 +547,7 @@ func (db *oracle) SupportInsertMany() bool {
 }
 
 func (db *oracle) IsReserved(name string) bool {
-	_, ok := oracleReservedWords[name]
+	_, ok := oracleReservedWords[strings.ToUpper(name)]
 	return ok
 }
 
diff --git a/dialect_postgres.go b/dialect_postgres.go
index 1d4daa27..8be29881 100644
--- a/dialect_postgres.go
+++ b/dialect_postgres.go
@@ -836,7 +836,7 @@ func (db *postgres) SupportInsertMany() bool {
 }
 
 func (db *postgres) IsReserved(name string) bool {
-	_, ok := postgresReservedWords[name]
+	_, ok := postgresReservedWords[strings.ToUpper(name)]
 	return ok
 }
 
diff --git a/dialect_sqlite3.go b/dialect_sqlite3.go
index a55b1615..a63123b6 100644
--- a/dialect_sqlite3.go
+++ b/dialect_sqlite3.go
@@ -194,7 +194,7 @@ func (db *sqlite3) SupportInsertMany() bool {
 }
 
 func (db *sqlite3) IsReserved(name string) bool {
-	_, ok := sqlite3ReservedWords[name]
+	_, ok := sqlite3ReservedWords[strings.ToUpper(name)]
 	return ok
 }
 
diff --git a/engine.go b/engine.go
index 76e59b22..674ed1ad 100644
--- a/engine.go
+++ b/engine.go
@@ -130,15 +130,6 @@ func (engine *Engine) SupportInsertMany() bool {
 	return engine.dialect.SupportInsertMany()
 }
 
-// QuoteStr Engine's database use which character as quote.
-// mysql, sqlite use ` and postgres use "
-func (engine *Engine) QuoteStr() string {
-	if engine.QuoteMode == QuoteNoAdd {
-		return ""
-	}
-	return engine.dialect.QuoteStr()
-}
-
 // Quote Use QuoteStr quote the string sql
 func (engine *Engine) Quote(value string) string {
 	var buf string
@@ -147,6 +138,22 @@ func (engine *Engine) Quote(value string) string {
 	return b.String()
 }
 
+func (engine *Engine) needQuote(value string) bool {
+	return engine.QuoteMode == QuoteAddAlways ||
+		(engine.QuoteMode == QuoteAddReserved && engine.dialect.IsReserved(value))
+}
+
+func (engine *Engine) reverseQuote(value string) string {
+	if !engine.needQuote(value) {
+		return value
+	}
+	return engine.dialect.QuoteStr() + value + engine.dialect.QuoteStr()
+}
+
+func (engine *Engine) removeQuotes(value string) string {
+	return strings.Replace(strings.Replace(value, "`", "", -1), engine.dialect.QuoteStr(), "", -1)
+}
+
 // QuoteTo quotes string and writes into the buffer
 func (engine *Engine) QuoteTo(buf *bytes.Buffer, value string) {
 	if buf == nil {
@@ -159,20 +166,15 @@ func (engine *Engine) QuoteTo(buf *bytes.Buffer, value string) {
 	}
 
 	v := strings.Trim(value, "`"+engine.dialect.QuoteStr())
-	if engine.QuoteMode == QuoteNoAdd ||
-		(engine.QuoteMode == QuoteAddReserved && !engine.dialect.IsReserved(v)) {
+	if !engine.needQuote(v) {
 		buf.WriteString(v)
 		return
 	}
 
-	v = strings.Replace(v, ".", engine.QuoteStr()+"."+engine.QuoteStr(), -1)
+	v = strings.Replace(v, ".", engine.reverseQuote("."), -1)
 	buf.WriteString(engine.dialect.Quote(v))
 }
 
-func (engine *Engine) quote(sql string) string {
-	return engine.QuoteStr() + sql + engine.QuoteStr()
-}
-
 // SqlType will be depracated, please use SQLType instead
 //
 // Deprecated: use SQLType instead
diff --git a/session_insert.go b/session_insert.go
index c3648171..f53eab1c 100644
--- a/session_insert.go
+++ b/session_insert.go
@@ -212,28 +212,16 @@ func (session *Session) innerInsertMulti(rowsSlicePtr interface{}) (int64, error
 	}
 	cleanupProcessorsClosures(&session.beforeClosures)
 
-	var sql = "INSERT INTO %s (%v%v%v) VALUES (%v)"
+	var sql = "INSERT INTO %s (%v) VALUES (%v)"
 	var statement string
+	var tbName = session.Engine.Quote(session.Statement.TableName())
+	var quoteColNames = session.Engine.Quote(strings.Join(colNames, session.Engine.reverseQuote(", ")))
 	if session.Engine.dialect.DBType() == core.ORACLE {
-		sql = "INSERT ALL INTO %s (%v%v%v) VALUES (%v) SELECT 1 FROM DUAL"
-		temp := fmt.Sprintf(") INTO %s (%v%v%v) VALUES (",
-			session.Engine.Quote(session.Statement.TableName()),
-			session.Engine.QuoteStr(),
-			strings.Join(colNames, session.Engine.QuoteStr()+", "+session.Engine.QuoteStr()),
-			session.Engine.QuoteStr())
-		statement = fmt.Sprintf(sql,
-			session.Engine.Quote(session.Statement.TableName()),
-			session.Engine.QuoteStr(),
-			strings.Join(colNames, session.Engine.QuoteStr()+", "+session.Engine.QuoteStr()),
-			session.Engine.QuoteStr(),
-			strings.Join(colMultiPlaces, temp))
+		sql = "INSERT ALL INTO %s (%v) VALUES (%v) SELECT 1 FROM DUAL"
+		temp := fmt.Sprintf(") INTO %s (%v) VALUES (", tbName, quoteColNames)
+		statement = fmt.Sprintf(sql, tbName, quoteColNames, strings.Join(colMultiPlaces, temp))
 	} else {
-		statement = fmt.Sprintf(sql,
-			session.Engine.Quote(session.Statement.TableName()),
-			session.Engine.QuoteStr(),
-			strings.Join(colNames, session.Engine.QuoteStr()+", "+session.Engine.QuoteStr()),
-			session.Engine.QuoteStr(),
-			strings.Join(colMultiPlaces, "),("))
+		statement = fmt.Sprintf(sql, tbName, quoteColNames, strings.Join(colMultiPlaces, "),("))
 	}
 	res, err := session.exec(statement, args...)
 	if err != nil {
@@ -349,18 +337,17 @@ func (session *Session) innerInsert(bean interface{}) (int64, error) {
 	}
 
 	var sqlStr string
+	var tbName = session.Engine.Quote(session.Statement.TableName())
 	if len(colPlaces) > 0 {
-		sqlStr = fmt.Sprintf("INSERT INTO %s (%v%v%v) VALUES (%v)",
-			session.Engine.Quote(session.Statement.TableName()),
-			session.Engine.QuoteStr(),
-			strings.Join(colNames, session.Engine.Quote(", ")),
-			session.Engine.QuoteStr(),
+		sqlStr = fmt.Sprintf("INSERT INTO %s (%v) VALUES (%v)",
+			tbName,
+			session.Engine.Quote(strings.Join(colNames, session.Engine.reverseQuote(", "))),
 			colPlaces)
 	} else {
 		if session.Engine.dialect.DBType() == core.MYSQL {
-			sqlStr = fmt.Sprintf("INSERT INTO %s VALUES ()", session.Engine.Quote(session.Statement.TableName()))
+			sqlStr = fmt.Sprintf("INSERT INTO %s VALUES ()", tbName)
 		} else {
-			sqlStr = fmt.Sprintf("INSERT INTO %s DEFAULT VALUES", session.Engine.Quote(session.Statement.TableName()))
+			sqlStr = fmt.Sprintf("INSERT INTO %s DEFAULT VALUES", tbName)
 		}
 	}
 
diff --git a/session_update.go b/session_update.go
index 792fb574..53fd7cd5 100644
--- a/session_update.go
+++ b/session_update.go
@@ -101,11 +101,9 @@ func (session *Session) cacheUpdate(sqlStr string, args ...interface{}) error {
 				sps := strings.SplitN(kv, "=", 2)
 				sps2 := strings.Split(sps[0], ".")
 				colName := sps2[len(sps2)-1]
-				if strings.Contains(colName, "`") {
-					colName = strings.TrimSpace(strings.Replace(colName, "`", "", -1))
-				} else if strings.Contains(colName, session.Engine.QuoteStr()) {
-					colName = strings.TrimSpace(strings.Replace(colName, session.Engine.QuoteStr(), "", -1))
-				} else {
+				colName = strings.TrimSpace(strings.Replace(colName, "`", "", -1))
+				colName = strings.TrimSpace(session.Engine.removeQuotes(colName))
+				if colName == "" {
 					session.Engine.logger.Debug("[cacheUpdate] cannot find column", tableName, colName)
 					return ErrCacheFailed
 				}
diff --git a/statement.go b/statement.go
index 6e360bb3..c111f17c 100644
--- a/statement.go
+++ b/statement.go
@@ -574,16 +574,15 @@ func (statement *Statement) getExpr() map[string]exprParam {
 func (statement *Statement) col2NewColsWithQuote(columns ...string) []string {
 	newColumns := make([]string, 0)
 	for _, col := range columns {
-		col = strings.Replace(col, "`", "", -1)
-		col = strings.Replace(col, statement.Engine.QuoteStr(), "", -1)
+		col = statement.Engine.removeQuotes(col)
 		ccols := strings.Split(col, ",")
 		for _, c := range ccols {
 			fields := strings.Split(strings.TrimSpace(c), ".")
 			if len(fields) == 1 {
-				newColumns = append(newColumns, statement.Engine.quote(fields[0]))
+				newColumns = append(newColumns, statement.Engine.Quote(fields[0]))
 			} else if len(fields) == 2 {
-				newColumns = append(newColumns, statement.Engine.quote(fields[0])+"."+
-					statement.Engine.quote(fields[1]))
+				newColumns = append(newColumns, statement.Engine.Quote(fields[0])+"."+
+					statement.Engine.Quote(fields[1]))
 			} else {
 				panic(errors.New("unwanted colnames"))
 			}
@@ -620,7 +619,7 @@ func (statement *Statement) Cols(columns ...string) *Statement {
 
 	newColumns := statement.col2NewColsWithQuote(columns...)
 	statement.ColumnStr = strings.Join(newColumns, ", ")
-	statement.ColumnStr = strings.Replace(statement.ColumnStr, statement.Engine.quote("*"), "*", -1)
+	statement.ColumnStr = strings.Replace(statement.ColumnStr, statement.Engine.Quote("*"), "*", -1)
 	return statement
 }
 
@@ -836,7 +835,7 @@ func (statement *Statement) genIndexSQL() []string {
 	for idxName, index := range statement.RefTable.Indexes {
 		if index.Type == core.IndexType {
 			sql := fmt.Sprintf("CREATE INDEX %v ON %v (%v);", quote(indexName(tbName, idxName)),
-				quote(tbName), quote(strings.Join(index.Cols, quote(","))))
+				quote(tbName), quote(strings.Join(index.Cols, statement.Engine.reverseQuote(","))))
 			sqls = append(sqls, sql)
 		}
 	}
diff --git a/statement_test.go b/statement_test.go
index 32a07123..47b10044 100644
--- a/statement_test.go
+++ b/statement_test.go
@@ -26,7 +26,7 @@ var colStrTests = []struct {
 }
 
 func TestColumnsStringGeneration(t *testing.T) {
-	if dbType == "postgres" || dbType == "mssql" {
+	if dbType == "postgres" || dbType == "mssql" || *quote != int(QuoteAddAlways) {
 		return
 	}
 
diff --git a/xorm_test.go b/xorm_test.go
index 24062d53..998010a0 100644
--- a/xorm_test.go
+++ b/xorm_test.go
@@ -24,6 +24,7 @@ var (
 	ptrConnStr = flag.String("conn_str", "", "test database connection string")
 	mapType    = flag.String("map_type", "snake", "indicate the name mapping")
 	cache      = flag.Bool("cache", false, "if enable cache")
+	quote      = flag.Int("quote", int(QuoteAddAlways), "quote mode")
 )
 
 func createEngine(dbType, connStr string) error {
@@ -36,7 +37,7 @@ func createEngine(dbType, connStr string) error {
 
 		testEngine.ShowSQL(*showSQL)
 		testEngine.logger.SetLevel(core.LOG_DEBUG)
-		//testEngine.QuoteMode = QuoteAddReserved
+		testEngine.QuoteMode = QuoteMode(*quote)
 	}
 
 	tables, err := testEngine.DBMetas()