diff --git a/engine.go b/engine.go
index b60234e0..1ab2eed2 100644
--- a/engine.go
+++ b/engine.go
@@ -191,11 +191,6 @@ func (engine *Engine) SupportInsertMany() bool {
 	return engine.dialect.SupportInsertMany()
 }
 
-func (engine *Engine) quoteColumns(columnStr string) string {
-	columns := strings.Split(columnStr, ",")
-	return engine.dialect.Quoter().Join(columns, ",")
-}
-
 // Quote Use QuoteStr quote the string sql
 func (engine *Engine) Quote(value string) string {
 	value = strings.TrimSpace(value)
@@ -222,18 +217,6 @@ func (engine *Engine) QuoteTo(buf *strings.Builder, value string) {
 	engine.dialect.Quoter().QuoteTo(buf, value)
 }
 
-/*
-func (engine *Engine) quote(sql string) string {
-	return engine.dialect.Quote(sql)
-}*/
-
-// SqlType will be deprecated, please use SQLType instead
-//
-// Deprecated: use SQLType instead
-func (engine *Engine) SqlType(c *schemas.Column) string {
-	return engine.SQLType(c)
-}
-
 // SQLType A simple wrapper to dialect's core.SqlType method
 func (engine *Engine) SQLType(c *schemas.Column) string {
 	return engine.dialect.SQLType(c)
@@ -335,14 +318,6 @@ func (engine *Engine) logSQL(sqlStr string, sqlArgs ...interface{}) {
 	}
 }
 
-// Sql provides raw sql input parameter. When you have a complex SQL statement
-// and cannot use Where, Id, In and etc. Methods to describe, you can use SQL.
-//
-// Deprecated: use SQL instead.
-func (engine *Engine) Sql(querystring string, args ...interface{}) *Session {
-	return engine.SQL(querystring, args...)
-}
-
 // SQL method let's you manually write raw SQL and operate
 // For example:
 //
@@ -597,13 +572,6 @@ func (engine *Engine) Where(query interface{}, args ...interface{}) *Session {
 	return session.Where(query, args...)
 }
 
-// Id will be deprecated, please use ID instead
-func (engine *Engine) Id(id interface{}) *Session {
-	session := engine.NewSession()
-	session.isAutoClose = true
-	return session.Id(id)
-}
-
 // ID method provoide a condition as (id) = ?
 func (engine *Engine) ID(id interface{}) *Session {
 	session := engine.NewSession()
@@ -1092,23 +1060,9 @@ func (engine *Engine) IsTableExist(beanOrTableName interface{}) (bool, error) {
 	return session.IsTableExist(beanOrTableName)
 }
 
-// IdOf get id from one struct
-//
-// Deprecated: use IDOf instead.
-func (engine *Engine) IdOf(bean interface{}) schemas.PK {
-	return engine.IDOf(bean)
-}
-
 // IDOf get id from one struct
 func (engine *Engine) IDOf(bean interface{}) schemas.PK {
-	return engine.IdOfV(reflect.ValueOf(bean))
-}
-
-// IdOfV get id from one value of struct
-//
-// Deprecated: use IDOfV instead.
-func (engine *Engine) IdOfV(rv reflect.Value) schemas.PK {
-	return engine.IDOfV(rv)
+	return engine.IDOfV(reflect.ValueOf(bean))
 }
 
 // IDOfV get id from one value of struct
diff --git a/helpers.go b/helpers.go
index 9aa3b1cb..75393ae3 100644
--- a/helpers.go
+++ b/helpers.go
@@ -214,10 +214,3 @@ func eraseAny(value string, strToErase ...string) string {
 
 	return replacer.Replace(value)
 }
-
-func quoteColumns(cols []string, quoteFunc func(string) string, sep string) string {
-	for i := range cols {
-		cols[i] = quoteFunc(cols[i])
-	}
-	return strings.Join(cols, sep+" ")
-}
diff --git a/helpers_test.go b/helpers_test.go
index caf7b9f0..fc9ece27 100644
--- a/helpers_test.go
+++ b/helpers_test.go
@@ -16,12 +16,3 @@ func TestEraseAny(t *testing.T) {
 	assert.EqualValues(t, "SELECT * FROM table.[table_name]", eraseAny(raw, "`"))
 	assert.EqualValues(t, "SELECT * FROM table.table_name", eraseAny(raw, "`", "[", "]"))
 }
-
-func TestQuoteColumns(t *testing.T) {
-	cols := []string{"f1", "f2", "f3"}
-	quoteFunc := func(value string) string {
-		return "[" + value + "]"
-	}
-
-	assert.EqualValues(t, "[f1], [f2], [f3]", quoteColumns(cols, quoteFunc, ","))
-}
diff --git a/schemas/quote.go b/schemas/quote.go
index e3571e34..5dac6d27 100644
--- a/schemas/quote.go
+++ b/schemas/quote.go
@@ -5,7 +5,6 @@
 package schemas
 
 import (
-	"fmt"
 	"strings"
 )
 
@@ -76,7 +75,7 @@ func (q Quoter) Trim(s string) string {
 	return s
 }
 
-func TrimSpaceJoin(a []string, sep string) string {
+func (q Quoter) Join(a []string, sep string) string {
 	switch len(a) {
 	case 0:
 		return ""
@@ -90,19 +89,21 @@ func TrimSpaceJoin(a []string, sep string) string {
 
 	var b strings.Builder
 	b.Grow(n)
-	b.WriteString(strings.TrimSpace(a[0]))
-	for _, s := range a[1:] {
-		b.WriteString(sep)
+	for i, s := range a {
+		if i > 0 {
+			b.WriteString(sep)
+		}
+		if q[0] != "" {
+			b.WriteString(q[0])
+		}
 		b.WriteString(strings.TrimSpace(s))
+		if q[1] != "" {
+			b.WriteString(q[1])
+		}
 	}
 	return b.String()
 }
 
-func (q Quoter) Join(s []string, splitter string) string {
-	//return fmt.Sprintf("%s%s%s", q[0], TrimSpaceJoin(s, fmt.Sprintf("%s%s%s", q[1], splitter, q[0])), q[1])
-	return q.Quote(TrimSpaceJoin(s, fmt.Sprintf("%s%s%s", q[1], splitter, q[0])))
-}
-
 func (q Quoter) QuoteTo(buf *strings.Builder, value string) {
 	if q.IsEmpty() {
 		buf.WriteString(value)
diff --git a/schemas/quote_test.go b/schemas/quote_test.go
index af773c8b..5eea05d3 100644
--- a/schemas/quote_test.go
+++ b/schemas/quote_test.go
@@ -45,3 +45,13 @@ func TestQuoteTo(t *testing.T) {
 	quoter.QuoteTo(buf, "noquote")
 	assert.EqualValues(t, "noquote", buf.String())
 }
+
+func TestJoin(t *testing.T) {
+	cols := []string{"f1", "f2", "f3"}
+	quoter := Quoter{"[", "]"}
+
+	assert.EqualValues(t, "[f1], [f2], [f3]", quoter.Join(cols, ", "))
+
+	quoter = Quoter{"", ""}
+	assert.EqualValues(t, "f1, f2, f3", quoter.Join(cols, ", "))
+}
diff --git a/session_cond.go b/session_cond.go
index b16bdea8..72e3abc3 100644
--- a/session_cond.go
+++ b/session_cond.go
@@ -6,14 +6,6 @@ package xorm
 
 import "xorm.io/builder"
 
-// Sql provides raw sql input parameter. When you have a complex SQL statement
-// and cannot use Where, Id, In and etc. Methods to describe, you can use SQL.
-//
-// Deprecated: use SQL instead.
-func (session *Session) Sql(query string, args ...interface{}) *Session {
-	return session.SQL(query, args...)
-}
-
 // SQL provides raw sql input parameter. When you have a complex SQL statement
 // and cannot use Where, Id, In and etc. Methods to describe, you can use SQL.
 func (session *Session) SQL(query interface{}, args ...interface{}) *Session {
@@ -39,13 +31,6 @@ func (session *Session) Or(query interface{}, args ...interface{}) *Session {
 	return session
 }
 
-// Id provides converting id as a query condition
-//
-// Deprecated: use ID instead
-func (session *Session) Id(id interface{}) *Session {
-	return session.ID(id)
-}
-
 // ID provides converting id as a query condition
 func (session *Session) ID(id interface{}) *Session {
 	session.statement.ID(id)
diff --git a/session_find.go b/session_find.go
index 7ae54a5f..566e83dd 100644
--- a/session_find.go
+++ b/session_find.go
@@ -142,7 +142,7 @@ func (session *Session) find(rowsSlicePtr interface{}, condiBean ...interface{})
 			if session.statement.JoinStr == "" {
 				if columnStr == "" {
 					if session.statement.GroupByStr != "" {
-						columnStr = session.engine.quoteColumns(session.statement.GroupByStr)
+						columnStr = session.statement.quoteColumnStr(session.statement.GroupByStr)
 					} else {
 						columnStr = session.statement.genColumnStr()
 					}
@@ -150,7 +150,7 @@ func (session *Session) find(rowsSlicePtr interface{}, condiBean ...interface{})
 			} else {
 				if columnStr == "" {
 					if session.statement.GroupByStr != "" {
-						columnStr = session.engine.quoteColumns(session.statement.GroupByStr)
+						columnStr = session.statement.quoteColumnStr(session.statement.GroupByStr)
 					} else {
 						columnStr = "*"
 					}
@@ -417,7 +417,7 @@ func (session *Session) cacheFind(t reflect.Type, sqlStr string, rowsSlicePtr in
 		} else {
 			session.engine.logger.Debug("[cacheFind] cache hit bean:", tableName, id, bean)
 
-			pk := session.engine.IdOf(bean)
+			pk := session.engine.IDOf(bean)
 			xid, err := pk.ToString()
 			if err != nil {
 				return err
diff --git a/session_insert.go b/session_insert.go
index 83def3fc..b788e629 100644
--- a/session_insert.go
+++ b/session_insert.go
@@ -251,19 +251,21 @@ func (session *Session) innerInsertMulti(rowsSlicePtr interface{}) (int64, error
 	}
 	cleanupProcessorsClosures(&session.beforeClosures)
 
+	quoter := session.engine.dialect.Quoter()
 	var sql string
+	colStr := quoter.Join(colNames, ",")
 	if session.engine.dialect.DBType() == schemas.ORACLE {
 		temp := fmt.Sprintf(") INTO %s (%v) VALUES (",
-			session.engine.Quote(tableName),
-			quoteColumns(colNames, session.engine.Quote, ","))
+			quoter.Quote(tableName),
+			colStr)
 		sql = fmt.Sprintf("INSERT ALL INTO %s (%v) VALUES (%v) SELECT 1 FROM DUAL",
-			session.engine.Quote(tableName),
-			quoteColumns(colNames, session.engine.Quote, ","),
+			quoter.Quote(tableName),
+			colStr,
 			strings.Join(colMultiPlaces, temp))
 	} else {
 		sql = fmt.Sprintf("INSERT INTO %s (%v) VALUES (%v)",
-			session.engine.Quote(tableName),
-			quoteColumns(colNames, session.engine.Quote, ","),
+			quoter.Quote(tableName),
+			colStr,
 			strings.Join(colMultiPlaces, "),("))
 	}
 	res, err := session.exec(sql, args...)
diff --git a/session_query.go b/session_query.go
index 0623c90c..afed4bcb 100644
--- a/session_query.go
+++ b/session_query.go
@@ -36,7 +36,7 @@ func (session *Session) genQuerySQL(sqlOrArgs ...interface{}) (string, []interfa
 		if session.statement.JoinStr == "" {
 			if columnStr == "" {
 				if session.statement.GroupByStr != "" {
-					columnStr = session.engine.quoteColumns(session.statement.GroupByStr)
+					columnStr = session.statement.quoteColumnStr(session.statement.GroupByStr)
 				} else {
 					columnStr = session.statement.genColumnStr()
 				}
@@ -44,7 +44,7 @@ func (session *Session) genQuerySQL(sqlOrArgs ...interface{}) (string, []interfa
 		} else {
 			if columnStr == "" {
 				if session.statement.GroupByStr != "" {
-					columnStr = session.engine.quoteColumns(session.statement.GroupByStr)
+					columnStr = session.statement.quoteColumnStr(session.statement.GroupByStr)
 				} else {
 					columnStr = "*"
 				}
diff --git a/statement.go b/statement.go
index aa218f77..9dc5bf52 100644
--- a/statement.go
+++ b/statement.go
@@ -940,6 +940,11 @@ func (statement *Statement) genConds(bean interface{}) (string, []interface{}, e
 	return builder.ToSQL(statement.cond)
 }
 
+func (statement *Statement) quoteColumnStr(columnStr string) string {
+	columns := strings.Split(columnStr, ",")
+	return statement.Engine.dialect.Quoter().Join(columns, ",")
+}
+
 func (statement *Statement) genGetSQL(bean interface{}) (string, []interface{}, error) {
 	v := rValue(bean)
 	isStruct := v.Kind() == reflect.Struct
@@ -955,7 +960,7 @@ func (statement *Statement) genGetSQL(bean interface{}) (string, []interface{},
 		if len(statement.JoinStr) == 0 {
 			if len(columnStr) == 0 {
 				if len(statement.GroupByStr) > 0 {
-					columnStr = statement.Engine.quoteColumns(statement.GroupByStr)
+					columnStr = statement.quoteColumnStr(statement.GroupByStr)
 				} else {
 					columnStr = statement.genColumnStr()
 				}
@@ -963,7 +968,7 @@ func (statement *Statement) genGetSQL(bean interface{}) (string, []interface{},
 		} else {
 			if len(columnStr) == 0 {
 				if len(statement.GroupByStr) > 0 {
-					columnStr = statement.Engine.quoteColumns(statement.GroupByStr)
+					columnStr = statement.quoteColumnStr(statement.GroupByStr)
 				}
 			}
 		}