add support subquery on SetExpr

Author: lunny

engine.go

@@ -729,7 +729,7 @@ func (engine *Engine) Decr(column string, arg ...interface{}) *Session {
 }
 
 // SetExpr provides a update string like "column = {expression}"
-func (engine *Engine) SetExpr(column string, expression string) *Session {
+func (engine *Engine) SetExpr(column string, expression interface{}) *Session {
 	session := engine.NewSession()
 	session.isAutoClose = true
 	return session.SetExpr(column, expression)

go.mod

@@ -16,6 +16,6 @@ require (
 	github.com/shopspring/decimal v0.0.0-20180709203117-cd690d0c9e24 // indirect
 	github.com/stretchr/testify v1.3.0
 	github.com/ziutek/mymysql v1.5.4
-	xorm.io/builder v0.3.6-0.20190906062455-b937eb46ecfb
+	xorm.io/builder v0.3.6
 	xorm.io/core v0.7.0
 )

go.sum

@@ -162,7 +162,7 @@ gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 honnef.co/go/tools v0.0.0-20180728063816-88497007e858/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-xorm.io/builder v0.3.6-0.20190906062455-b937eb46ecfb h1:2idZcp79ldX5qLeQ6WKCdS7aEFNOMvQc9wrtt5hSRwM=
-xorm.io/builder v0.3.6-0.20190906062455-b937eb46ecfb/go.mod h1:LEFAPISnRzG+zxaxj2vPicRwz67BdhFreKg8yv8/TgU=
+xorm.io/builder v0.3.6 h1:ha28mQ2M+TFx96Hxo+iq6tQgnkC9IZkM6D8w9sKHHF8=
+xorm.io/builder v0.3.6/go.mod h1:LEFAPISnRzG+zxaxj2vPicRwz67BdhFreKg8yv8/TgU=
 xorm.io/core v0.7.0 h1:hKxuOKWZNeiFQsSuGet/KV8HZ788hclvAl+7azx3tkM=
 xorm.io/core v0.7.0/go.mod h1:TuOJjIVa7e3w/rN8tDcAvuLBMtwzdHPbyOzE6Gk1EUI=

interface.go

@@ -54,7 +54,7 @@ type Interface interface {
 	QueryInterface(sqlOrArgs ...interface{}) ([]map[string]interface{}, error)
 	QueryString(sqlOrArgs ...interface{}) ([]map[string]string, error)
 	Rows(bean interface{}) (*Rows, error)
-	SetExpr(string, string) *Session
+	SetExpr(string, interface{}) *Session
 	SQL(interface{}, ...interface{}) *Session
 	Sum(bean interface{}, colName string) (float64, error)
 	SumInt(bean interface{}, colName string) (int64, error)

session_cols.go

@@ -12,49 +12,6 @@ import (
 	"xorm.io/core"
 )
 
-type incrParam struct {
-	colName string
-	arg     interface{}
-}
-
-type decrParam struct {
-	colName string
-	arg     interface{}
-}
-
-type exprParam struct {
-	colName string
-	expr    string
-}
-
-type columnMap []string
-
-func (m columnMap) contain(colName string) bool {
-	if len(m) == 0 {
-		return false
-	}
-
-	n := len(colName)
-	for _, mk := range m {
-		if len(mk) != n {
-			continue
-		}
-		if strings.EqualFold(mk, colName) {
-			return true
-		}
-	}
-
-	return false
-}
-
-func (m *columnMap) add(colName string) bool {
-	if m.contain(colName) {
-		return false
-	}
-	*m = append(*m, colName)
-	return true
-}
-
 func setColumnInt(bean interface{}, col *core.Column, t int64) {
 	v, err := col.ValueOf(bean)
 	if err != nil {
@@ -132,7 +89,7 @@ func (session *Session) Decr(column string, arg ...interface{}) *Session {
 }
 
 // SetExpr provides a query string like "column = {expression}"
-func (session *Session) SetExpr(column string, expression string) *Session {
+func (session *Session) SetExpr(column string, expression interface{}) *Session {
 	session.statement.SetExpr(column, expression)
 	return session
 }