fix migrate failed and org dashboard failed on MSSQL database (#1448)

vendor/github.com/go-xorm/xorm/session_cols.go

@@ -0,0 +1,84 @@
+// Copyright 2017 The Xorm Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package xorm
+
+// Incr provides a query string like "count = count + 1"
+func (session *Session) Incr(column string, arg ...interface{}) *Session {
+	session.Statement.Incr(column, arg...)
+	return session
+}
+
+// Decr provides a query string like "count = count - 1"
+func (session *Session) Decr(column string, arg ...interface{}) *Session {
+	session.Statement.Decr(column, arg...)
+	return session
+}
+
+// SetExpr provides a query string like "column = {expression}"
+func (session *Session) SetExpr(column string, expression string) *Session {
+	session.Statement.SetExpr(column, expression)
+	return session
+}
+
+// Select provides some columns to special
+func (session *Session) Select(str string) *Session {
+	session.Statement.Select(str)
+	return session
+}
+
+// Cols provides some columns to special
+func (session *Session) Cols(columns ...string) *Session {
+	session.Statement.Cols(columns...)
+	return session
+}
+
+// AllCols ask all columns
+func (session *Session) AllCols() *Session {
+	session.Statement.AllCols()
+	return session
+}
+
+// MustCols specify some columns must use even if they are empty
+func (session *Session) MustCols(columns ...string) *Session {
+	session.Statement.MustCols(columns...)
+	return session
+}
+
+// UseBool automatically retrieve condition according struct, but
+// if struct has bool field, it will ignore them. So use UseBool
+// to tell system to do not ignore them.
+// If no parameters, it will use all the bool field of struct, or
+// it will use parameters's columns
+func (session *Session) UseBool(columns ...string) *Session {
+	session.Statement.UseBool(columns...)
+	return session
+}
+
+// Distinct use for distinct columns. Caution: when you are using cache,
+// distinct will not be cached because cache system need id,
+// but distinct will not provide id
+func (session *Session) Distinct(columns ...string) *Session {
+	session.Statement.Distinct(columns...)
+	return session
+}
+
+// Omit Only not use the parameters as select or update columns
+func (session *Session) Omit(columns ...string) *Session {
+	session.Statement.Omit(columns...)
+	return session
+}
+
+// Nullable Set null when column is zero-value and nullable for update
+func (session *Session) Nullable(columns ...string) *Session {
+	session.Statement.Nullable(columns...)
+	return session
+}
+
+// NoAutoTime means do not automatically give created field and updated field
+// the current time on the current session temporarily
+func (session *Session) NoAutoTime() *Session {
+	session.Statement.UseAutoTime = false
+	return session
+}