DB Migrations (#67)

vendor/github.com/go-xorm/builder/.drone.yml

@@ -0,0 +1,37 @@
+workspace:
+  base: /go
+  path: src/github.com/go-xorm/builder
+
+clone:
+  git:
+    image: plugins/git:next
+    depth: 50
+    tags: true
+
+matrix:
+  GO_VERSION:
+    - 1.8
+    - 1.9
+    - 1.10
+    - 1.11
+
+pipeline:
+  test:
+    image: golang:${GO_VERSION}
+    commands:
+      - go get -u github.com/golang/lint/golint
+      - go get -u github.com/stretchr/testify/assert
+      - go get -u github.com/go-xorm/sqlfiddle
+      - golint ./...
+      - go test -v -race -coverprofile=coverage.txt -covermode=atomic
+    when:
+      event: [ push, tag, pull_request ]
+
+codecov:
+    image: robertstettner/drone-codecov
+    group: build
+    secrets: [ codecov_token ]
+    files:
+      - coverage.txt
+    when:
+      event: [ push, pull_request ]

vendor/github.com/go-xorm/builder/README.md

@@ -1,26 +1,47 @@
 # SQL builder
 
-[![CircleCI](https://circleci.com/gh/go-xorm/builder/tree/master.svg?style=svg)](https://circleci.com/gh/go-xorm/builder/tree/master)
+[![GitCI.cn](https://gitci.cn/api/badges/go-xorm/builder/status.svg)](https://gitci.cn/go-xorm/builder)  [![codecov](https://codecov.io/gh/go-xorm/builder/branch/master/graph/badge.svg)](https://codecov.io/gh/go-xorm/builder)
+[![](https://goreportcard.com/badge/github.com/go-xorm/builder)](https://goreportcard.com/report/github.com/go-xorm/builder)
 
 Package builder is a lightweight and fast SQL builder for Go and XORM.
 
-Make sure you have installed Go 1.1+ and then:
+Make sure you have installed Go 1.8+ and then:
 
     go get github.com/go-xorm/builder
 
 # Insert
 
 ```Go
-sql, args, err := Insert(Eq{"c": 1, "d": 2}).Into("table1").ToSQL()
+sql, args, err := builder.Insert(Eq{"c": 1, "d": 2}).Into("table1").ToSQL()
+
+// INSERT INTO table1 SELECT * FROM table2
+sql, err := builder.Insert().Into("table1").Select().From("table2").ToBoundSQL()
+
+// INSERT INTO table1 (a, b) SELECT b, c FROM table2
+sql, err = builder.Insert("a, b").Into("table1").Select("b, c").From("table2").ToBoundSQL()
 ```
 
 # Select
 
 ```Go
+// Simple Query
 sql, args, err := Select("c, d").From("table1").Where(Eq{"a": 1}).ToSQL()
-
+// With join
 sql, args, err = Select("c, d").From("table1").LeftJoin("table2", Eq{"table1.id": 1}.And(Lt{"table2.id": 3})).
 		RightJoin("table3", "table2.id = table3.tid").Where(Eq{"a": 1}).ToSQL()
+// From sub query
+sql, args, err := Select("sub.id").From(Select("c").From("table1").Where(Eq{"a": 1}), "sub").Where(Eq{"b": 1}).ToSQL()
+// From union query
+sql, args, err = Select("sub.id").From(
+	Select("id").From("table1").Where(Eq{"a": 1}).Union("all", Select("id").From("table1").Where(Eq{"a": 2})),"sub").
+	Where(Eq{"b": 1}).ToSQL()
+// With order by
+sql, args, err = Select("a", "b", "c").From("table1").Where(Eq{"f1": "v1", "f2": "v2"}).
+		OrderBy("a ASC").ToSQL()
+// With limit.
+// Be careful! You should set up specific dialect for builder before performing a query with LIMIT
+sql, args, err = Dialect(MYSQL).Select("a", "b", "c").From("table1").OrderBy("a ASC").
+		Limit(5, 10).ToSQL()
 ```
 
 # Update
@@ -35,6 +56,16 @@ sql, args, err := Update(Eq{"a": 2}).From("table1").Where(Eq{"a": 1}).ToSQL()
 sql, args, err := Delete(Eq{"a": 1}).From("table1").ToSQL()
 ```
 
+# Union
+
+```Go
+sql, args, err := Select("*").From("a").Where(Eq{"status": "1"}).
+		Union("all", Select("*").From("a").Where(Eq{"status": "2"})).
+		Union("distinct", Select("*").From("a").Where(Eq{"status": "3"})).
+		Union("", Select("*").From("a").Where(Eq{"status": "4"})).
+		ToSQL()
+```
+
 # Conditions
 
 * `Eq` is a redefine of a map, you can give one or more conditions to `Eq`

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

@@ -4,6 +4,12 @@
 
 package builder
 
+import (
+	sql2 "database/sql"
+	"fmt"
+	"sort"
+)
+
 type optype byte
 
 const (
@@ -12,6 +18,15 @@ const (
 	insertType               // insert
 	updateType               // update
 	deleteType               // delete
+	unionType                // union
+)
+
+const (
+	POSTGRES = "postgres"
+	SQLITE   = "sqlite3"
+	MYSQL    = "mysql"
+	MSSQL    = "mssql"
+	ORACLE   = "oracle"
 )
 
 type join struct {
@@ -20,60 +35,115 @@ type join struct {
 	joinCond  Cond
 }
 
+type union struct {
+	unionType string
+	builder   *Builder
+}
+
+type limit struct {
+	limitN int
+	offset int
+}
+
 // Builder describes a SQL statement
 type Builder struct {
 	optype
-	tableName string
-	cond      Cond
-	selects   []string
-	joins     []join
-	inserts   Eq
-	updates   []Eq
+	dialect    string
+	isNested   bool
+	into       string
+	from       string
+	subQuery   *Builder
+	cond       Cond
+	selects    []string
+	joins      []join
+	unions     []union
+	limitation *limit
+	insertCols []string
+	insertVals []interface{}
+	updates    []Eq
+	orderBy    string
+	groupBy    string
+	having     string
 }
 
-// Select creates a select Builder
-func Select(cols ...string) *Builder {
-	builder := &Builder{cond: NewCond()}
-	return builder.Select(cols...)
+// Dialect sets the db dialect of Builder.
+func Dialect(dialect string) *Builder {
+	builder := &Builder{cond: NewCond(), dialect: dialect}
+	return builder
 }
 
-// Insert creates an insert Builder
-func Insert(eq Eq) *Builder {
-	builder := &Builder{cond: NewCond()}
-	return builder.Insert(eq)
+// MySQL is shortcut of Dialect(MySQL)
+func MySQL() *Builder {
+	return Dialect(MYSQL)
 }
 
-// Update creates an update Builder
-func Update(updates ...Eq) *Builder {
-	builder := &Builder{cond: NewCond()}
-	return builder.Update(updates...)
+// MsSQL is shortcut of Dialect(MsSQL)
+func MsSQL() *Builder {
+	return Dialect(MSSQL)
 }
 
-// Delete creates a delete Builder
-func Delete(conds ...Cond) *Builder {
-	builder := &Builder{cond: NewCond()}
-	return builder.Delete(conds...)
+// Oracle is shortcut of Dialect(Oracle)
+func Oracle() *Builder {
+	return Dialect(ORACLE)
+}
+
+// Postgres is shortcut of Dialect(Postgres)
+func Postgres() *Builder {
+	return Dialect(POSTGRES)
+}
+
+// SQLite is shortcut of Dialect(SQLITE)
+func SQLite() *Builder {
+	return Dialect(SQLITE)
 }
 
 // Where sets where SQL
 func (b *Builder) Where(cond Cond) *Builder {
-	b.cond = b.cond.And(cond)
+	if b.cond.IsValid() {
+		b.cond = b.cond.And(cond)
+	} else {
+		b.cond = cond
+	}
 	return b
 }
 
-// From sets the table name
-func (b *Builder) From(tableName string) *Builder {
-	b.tableName = tableName
+// From sets from subject(can be a table name in string or a builder pointer) and its alias
+func (b *Builder) From(subject interface{}, alias ...string) *Builder {
+	switch subject.(type) {
+	case *Builder:
+		b.subQuery = subject.(*Builder)
+
+		if len(alias) > 0 {
+			b.from = alias[0]
+		} else {
+			b.isNested = true
+		}
+	case string:
+		b.from = subject.(string)
+
+		if len(alias) > 0 {
+			b.from = b.from + " " + alias[0]
+		}
+	}
+
 	return b
 }
 
+// TableName returns the table name
+func (b *Builder) TableName() string {
+	if b.optype == insertType {
+		return b.into
+	}
+	return b.from
+}
+
 // Into sets insert table name
 func (b *Builder) Into(tableName string) *Builder {
-	b.tableName = tableName
+	b.into = tableName
 	return b
 }
 
-// Join sets join table and contions
+// Join sets join table and conditions
 func (b *Builder) Join(joinType, joinTable string, joinCond interface{}) *Builder {
 	switch joinCond.(type) {
 	case Cond:
@@ -85,6 +155,50 @@ func (b *Builder) Join(joinType, joinTable string, joinCond interface{}) *Builde
 	return b
 }
 
+// Union sets union conditions
+func (b *Builder) Union(unionTp string, unionCond *Builder) *Builder {
+	var builder *Builder
+	if b.optype != unionType {
+		builder = &Builder{cond: NewCond()}
+		builder.optype = unionType
+		builder.dialect = b.dialect
+		builder.selects = b.selects
+
+		currentUnions := b.unions
+		// erase sub unions (actually append to new Builder.unions)
+		b.unions = nil
+
+		for e := range currentUnions {
+			currentUnions[e].builder.dialect = b.dialect
+		}
+
+		builder.unions = append(append(builder.unions, union{"", b}), currentUnions...)
+	} else {
+		builder = b
+	}
+
+	if unionCond != nil {
+		if unionCond.dialect == "" && builder.dialect != "" {
+			unionCond.dialect = builder.dialect
+		}
+
+		builder.unions = append(builder.unions, union{unionTp, unionCond})
+	}
+
+	return builder
+}
+
+// Limit sets limitN condition
+func (b *Builder) Limit(limitN int, offset ...int) *Builder {
+	b.limitation = &limit{limitN: limitN}
+
+	if len(offset) > 0 {
+		b.limitation.offset = offset[0]
+	}
+
+	return b
+}
+
 // InnerJoin sets inner join
 func (b *Builder) InnerJoin(joinTable string, joinCond interface{}) *Builder {
 	return b.Join("INNER", joinTable, joinCond)
@@ -113,7 +227,9 @@ func (b *Builder) FullJoin(joinTable string, joinCond interface{}) *Builder {
 // Select sets select SQL
 func (b *Builder) Select(cols ...string) *Builder {
 	b.selects = cols
-	b.optype = selectType
+	if b.optype == condType {
+		b.optype = selectType
+	}
 	return b
 }
 
@@ -130,15 +246,52 @@ func (b *Builder) Or(cond Cond) *Builder {
 }
 
 // Insert sets insert SQL
-func (b *Builder) Insert(eq Eq) *Builder {
-	b.inserts = eq
+func (b *Builder) Insert(eq ...interface{}) *Builder {
+	if len(eq) > 0 {
+		var paramType = -1
+		for _, e := range eq {
+			switch t := e.(type) {
+			case Eq:
+				if paramType == -1 {
+					paramType = 0
+				}
+				if paramType != 0 {
+					break
+				}
+				for k, v := range t {
+					b.insertCols = append(b.insertCols, k)
+					b.insertVals = append(b.insertVals, v)
+				}
+			case string:
+				if paramType == -1 {
+					paramType = 1
+				}
+				if paramType != 1 {
+					break
+				}
+				b.insertCols = append(b.insertCols, t)
+			}
+		}
+	}
+
+	if len(b.insertCols) == len(b.insertVals) {
+		sort.Slice(b.insertVals, func(i, j int) bool {
+			return b.insertCols[i] < b.insertCols[j]
+		})
+		sort.Strings(b.insertCols)
+	}
 	b.optype = insertType
 	return b
 }
 
 // Update sets update SQL
 func (b *Builder) Update(updates ...Eq) *Builder {
-	b.updates = updates
+	b.updates = make([]Eq, 0, len(updates))
+	for _, update := range updates {
+		if update.IsValid() {
+			b.updates = append(b.updates, update)
+		}
+	}
 	b.optype = updateType
 	return b
 }
@@ -153,8 +306,8 @@ func (b *Builder) Delete(conds ...Cond) *Builder {
 // WriteTo implements Writer interface
 func (b *Builder) WriteTo(w Writer) error {
 	switch b.optype {
-	case condType:
-		return b.cond.WriteTo(w)
+	/*case condType:
+	return b.cond.WriteTo(w)*/
 	case selectType:
 		return b.selectWriteTo(w)
 	case insertType:
@@ -163,6 +316,8 @@ func (b *Builder) WriteTo(w Writer) error {
 		return b.updateWriteTo(w)
 	case deleteType:
 		return b.deleteWriteTo(w)
+	case unionType:
+		return b.unionWriteTo(w)
 	}
 
 	return ErrNotSupportType
@@ -175,16 +330,48 @@ func (b *Builder) ToSQL() (string, []interface{}, error) {
 		return "", nil, err
 	}
 
-	return w.writer.String(), w.args, nil
+	// in case of sql.NamedArg in args
+	for e := range w.args {
+		if namedArg, ok := w.args[e].(sql2.NamedArg); ok {
+			w.args[e] = namedArg.Value
+		}
+	}
+
+	var sql = w.writer.String()
+	var err error
+
+	switch b.dialect {
+	case ORACLE, MSSQL:
+		// This is for compatibility with different sql drivers
+		for e := range w.args {
+			w.args[e] = sql2.Named(fmt.Sprintf("p%d", e+1), w.args[e])
+		}
+
+		var prefix string
+		if b.dialect == ORACLE {
+			prefix = ":p"
+		} else {
+			prefix = "@p"
+		}
+
+		if sql, err = ConvertPlaceholder(sql, prefix); err != nil {
+			return "", nil, err
+		}
+	case POSTGRES:
+		if sql, err = ConvertPlaceholder(sql, "$"); err != nil {
+			return "", nil, err
+		}
+	}
+
+	return sql, w.args, nil
 }
 
-// ToSQL convert a builder or condtions to SQL and args
-func ToSQL(cond interface{}) (string, []interface{}, error) {
-	switch cond.(type) {
-	case Cond:
-		return condToSQL(cond.(Cond))
-	case *Builder:
-		return cond.(*Builder).ToSQL()
+// ToBoundSQL
+func (b *Builder) ToBoundSQL() (string, error) {
+	w := NewWriter()
+	if err := b.WriteTo(w); err != nil {
+		return "", err
 	}
-	return "", nil, ErrNotSupportType
+
+	return ConvertToBoundSQL(w.writer.String(), w.args)
 }

vendor/github.com/go-xorm/builder/builder_delete.go

@@ -5,16 +5,21 @@
 package builder
 
 import (
-	"errors"
 	"fmt"
 )
 
+// Delete creates a delete Builder
+func Delete(conds ...Cond) *Builder {
+	builder := &Builder{cond: NewCond()}
+	return builder.Delete(conds...)
+}
+
 func (b *Builder) deleteWriteTo(w Writer) error {
-	if len(b.tableName) <= 0 {
-		return errors.New("no table indicated")
+	if len(b.from) <= 0 {
+		return ErrNoTableName
 	}
 
-	if _, err := fmt.Fprintf(w, "DELETE FROM %s WHERE ", b.tableName); err != nil {
+	if _, err := fmt.Fprintf(w, "DELETE FROM %s WHERE ", b.from); err != nil {
 		return err
 	}
 

vendor/github.com/go-xorm/builder/builder_insert.go

@@ -6,37 +6,63 @@ package builder
 
 import (
 	"bytes"
-	"errors"
 	"fmt"
 )
 
-func (b *Builder) insertWriteTo(w Writer) error {
-	if len(b.tableName) <= 0 {
-		return errors.New("no table indicated")
-	}
-	if len(b.inserts) <= 0 {
-		return errors.New("no column to be update")
+// Insert creates an insert Builder
+func Insert(eq ...interface{}) *Builder {
+	builder := &Builder{cond: NewCond()}
+	return builder.Insert(eq...)
+}
+
+func (b *Builder) insertSelectWriteTo(w Writer) error {
+	if _, err := fmt.Fprintf(w, "INSERT INTO %s ", b.into); err != nil {
+		return err
 	}
 
-	if _, err := fmt.Fprintf(w, "INSERT INTO %s (", b.tableName); err != nil {
+	if len(b.insertCols) > 0 {
+		fmt.Fprintf(w, "(")
+		for _, col := range b.insertCols {
+			fmt.Fprintf(w, col)
+		}
+		fmt.Fprintf(w, ") ")
+	}
+
+	return b.selectWriteTo(w)
+}
+
+func (b *Builder) insertWriteTo(w Writer) error {
+	if len(b.into) <= 0 {
+		return ErrNoTableName
+	}
+	if len(b.insertCols) <= 0 && b.from == "" {
+		return ErrNoColumnToInsert
+	}
+
+	if b.into != "" && b.from != "" {
+		return b.insertSelectWriteTo(w)
+	}
+
+	if _, err := fmt.Fprintf(w, "INSERT INTO %s (", b.into); err != nil {
 		return err
 	}
 
 	var args = make([]interface{}, 0)
 	var bs []byte
 	var valBuffer = bytes.NewBuffer(bs)
-	var i = 0
-	for col, value := range b.inserts {
+
+	for i, col := range b.insertCols {
+		value := b.insertVals[i]
 		fmt.Fprint(w, col)
 		if e, ok := value.(expr); ok {
-			fmt.Fprint(valBuffer, e.sql)
+			fmt.Fprintf(valBuffer, "(%s)", e.sql)
 			args = append(args, e.args...)
 		} else {
 			fmt.Fprint(valBuffer, "?")
 			args = append(args, value)
 		}
 
-		if i != len(b.inserts)-1 {
+		if i != len(b.insertCols)-1 {
 			if _, err := fmt.Fprint(w, ","); err != nil {
 				return err
 			}
@@ -44,7 +70,6 @@ func (b *Builder) insertWriteTo(w Writer) error {
 				return err
 			}
 		}
-		i = i + 1
 	}
 
 	if _, err := fmt.Fprint(w, ") Values ("); err != nil {

vendor/github.com/go-xorm/builder/builder_limit.go

@@ -0,0 +1,100 @@
+// Copyright 2018 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 builder
+
+import (
+	"fmt"
+	"strings"
+)
+
+func (b *Builder) limitWriteTo(w Writer) error {
+	if strings.TrimSpace(b.dialect) == "" {
+		return ErrDialectNotSetUp
+	}
+
+	if b.limitation != nil {
+		limit := b.limitation
+		if limit.offset < 0 || limit.limitN <= 0 {
+			return ErrInvalidLimitation
+		}
+		// erase limit condition
+		b.limitation = nil
+		ow := w.(*BytesWriter)
+
+		switch strings.ToLower(strings.TrimSpace(b.dialect)) {
+		case ORACLE:
+			if len(b.selects) == 0 {
+				b.selects = append(b.selects, "*")
+			}
+
+			var final *Builder
+			selects := b.selects
+			b.selects = append(selects, "ROWNUM RN")
+
+			var wb *Builder
+			if b.optype == unionType {
+				wb = Dialect(b.dialect).Select("at.*", "ROWNUM RN").
+					From(b, "at")
+			} else {
+				wb = b
+			}
+
+			if limit.offset == 0 {
+				final = Dialect(b.dialect).Select(selects...).From(wb, "at").
+					Where(Lte{"at.RN": limit.limitN})
+			} else {
+				sub := Dialect(b.dialect).Select("*").
+					From(b, "at").Where(Lte{"at.RN": limit.offset + limit.limitN})
+
+				final = Dialect(b.dialect).Select(selects...).From(sub, "att").
+					Where(Gt{"att.RN": limit.offset})
+			}
+
+			return final.WriteTo(ow)
+		case SQLITE, MYSQL, POSTGRES:
+			// if type UNION, we need to write previous content back to current writer
+			if b.optype == unionType {
+				if err := b.WriteTo(ow); err != nil {
+					return err
+				}
+			}
+
+			if limit.offset == 0 {
+				fmt.Fprint(ow, " LIMIT ", limit.limitN)
+			} else {
+				fmt.Fprintf(ow, " LIMIT %v OFFSET %v", limit.limitN, limit.offset)
+			}
+		case MSSQL:
+			if len(b.selects) == 0 {
+				b.selects = append(b.selects, "*")
+			}
+
+			var final *Builder
+			selects := b.selects
+			b.selects = append(append([]string{fmt.Sprintf("TOP %d %v", limit.limitN+limit.offset, b.selects[0])},
+				b.selects[1:]...), "ROW_NUMBER() OVER (ORDER BY (SELECT 1)) AS RN")
+
+			var wb *Builder
+			if b.optype == unionType {
+				wb = Dialect(b.dialect).Select("*", "ROW_NUMBER() OVER (ORDER BY (SELECT 1)) AS RN").
+					From(b, "at")
+			} else {
+				wb = b
+			}
+
+			if limit.offset == 0 {
+				final = Dialect(b.dialect).Select(selects...).From(wb, "at")
+			} else {
+				final = Dialect(b.dialect).Select(selects...).From(wb, "at").Where(Gt{"at.RN": limit.offset})
+			}
+
+			return final.WriteTo(ow)
+		default:
+			return ErrNotSupportType
+		}
+	}
+
+	return nil
+}

vendor/github.com/go-xorm/builder/builder_select.go

@@ -5,13 +5,24 @@
 package builder
 
 import (
-	"errors"
 	"fmt"
 )
 
+// Select creates a select Builder
+func Select(cols ...string) *Builder {
+	builder := &Builder{cond: NewCond()}
+	return builder.Select(cols...)
+}
+
 func (b *Builder) selectWriteTo(w Writer) error {
-	if len(b.tableName) <= 0 {
-		return errors.New("no table indicated")
+	if len(b.from) <= 0 && !b.isNested {
+		return ErrNoTableName
+	}
+
+	// perform limit before writing to writer when b.dialect between ORACLE and MSSQL
+	// this avoid a duplicate writing problem in simple limit query
+	if b.limitation != nil && (b.dialect == ORACLE || b.dialect == MSSQL) {
+		return b.limitWriteTo(w)
 	}
 
 	if _, err := fmt.Fprint(w, "SELECT "); err != nil {
@@ -34,20 +45,101 @@ func (b *Builder) selectWriteTo(w Writer) error {
 		}
 	}
 
-	if _, err := fmt.Fprintf(w, " FROM %s", b.tableName); err != nil {
-		return err
+	if b.subQuery == nil {
+		if _, err := fmt.Fprint(w, " FROM ", b.from); err != nil {
+			return err
+		}
+	} else {
+		if b.cond.IsValid() && len(b.from) <= 0 {
+			return ErrUnnamedDerivedTable
+		}
+		if b.subQuery.dialect != "" && b.dialect != b.subQuery.dialect {
+			return ErrInconsistentDialect
+		}
+
+		// dialect of sub-query will inherit from the main one (if not set up)
+		if b.dialect != "" && b.subQuery.dialect == "" {
+			b.subQuery.dialect = b.dialect
+		}
+
+		switch b.subQuery.optype {
+		case selectType, unionType:
+			fmt.Fprint(w, " FROM (")
+			if err := b.subQuery.WriteTo(w); err != nil {
+				return err
+			}
+
+			if len(b.from) == 0 {
+				fmt.Fprintf(w, ")")
+			} else {
+				fmt.Fprintf(w, ") %v", b.from)
+			}
+		default:
+			return ErrUnexpectedSubQuery
+		}
 	}
 
 	for _, v := range b.joins {
-		fmt.Fprintf(w, " %s JOIN %s ON ", v.joinType, v.joinTable)
+		if _, err := fmt.Fprintf(w, " %s JOIN %s ON ", v.joinType, v.joinTable); err != nil {
+			return err
+		}
+
 		if err := v.joinCond.WriteTo(w); err != nil {
 			return err
 		}
 	}
 
-	if _, err := fmt.Fprint(w, " WHERE "); err != nil {
-		return err
+	if b.cond.IsValid() {
+		if _, err := fmt.Fprint(w, " WHERE "); err != nil {
+			return err
+		}
+
+		if err := b.cond.WriteTo(w); err != nil {
+			return err
+		}
 	}
 
-	return b.cond.WriteTo(w)
+	if len(b.groupBy) > 0 {
+		if _, err := fmt.Fprint(w, " GROUP BY ", b.groupBy); err != nil {
+			return err
+		}
+	}
+
+	if len(b.having) > 0 {
+		if _, err := fmt.Fprint(w, " HAVING ", b.having); err != nil {
+			return err
+		}
+	}
+
+	if len(b.orderBy) > 0 {
+		if _, err := fmt.Fprint(w, " ORDER BY ", b.orderBy); err != nil {
+			return err
+		}
+	}
+
+	if b.limitation != nil {
+		if err := b.limitWriteTo(w); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+// OrderBy orderBy SQL
+func (b *Builder) OrderBy(orderBy string) *Builder {
+	b.orderBy = orderBy
+	return b
+}
+
+// GroupBy groupby SQL
+func (b *Builder) GroupBy(groupby string) *Builder {
+	b.groupBy = groupby
+	return b
+}
+
+// Having having SQL
+func (b *Builder) Having(having string) *Builder {
+	b.having = having
+	return b
 }

vendor/github.com/go-xorm/builder/builder_union.go

@@ -0,0 +1,47 @@
+// Copyright 2018 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 builder
+
+import (
+	"fmt"
+	"strings"
+)
+
+func (b *Builder) unionWriteTo(w Writer) error {
+	if b.limitation != nil || b.cond.IsValid() ||
+		b.orderBy != "" || b.having != "" || b.groupBy != "" {
+		return ErrNotUnexpectedUnionConditions
+	}
+
+	for idx, u := range b.unions {
+		current := u.builder
+		if current.optype != selectType {
+			return ErrUnsupportedUnionMembers
+		}
+
+		if len(b.unions) == 1 {
+			if err := current.selectWriteTo(w); err != nil {
+				return err
+			}
+		} else {
+			if b.dialect != "" && b.dialect != current.dialect {
+				return ErrInconsistentDialect
+			}
+
+			if idx != 0 {
+				fmt.Fprint(w, fmt.Sprintf(" UNION %v ", strings.ToUpper(u.unionType)))
+			}
+			fmt.Fprint(w, "(")
+
+			if err := current.selectWriteTo(w); err != nil {
+				return err
+			}
+
+			fmt.Fprint(w, ")")
+		}
+	}
+
+	return nil
+}

vendor/github.com/go-xorm/builder/builder_update.go

@@ -5,19 +5,24 @@
 package builder
 
 import (
-	"errors"
 	"fmt"
 )
 
+// Update creates an update Builder
+func Update(updates ...Eq) *Builder {
+	builder := &Builder{cond: NewCond()}
+	return builder.Update(updates...)
+}
+
 func (b *Builder) updateWriteTo(w Writer) error {
-	if len(b.tableName) <= 0 {
-		return errors.New("no table indicated")
+	if len(b.from) <= 0 {
+		return ErrNoTableName
 	}
 	if len(b.updates) <= 0 {
-		return errors.New("no column to be update")
+		return ErrNoColumnToUpdate
 	}
 
-	if _, err := fmt.Fprintf(w, "UPDATE %s SET ", b.tableName); err != nil {
+	if _, err := fmt.Fprintf(w, "UPDATE %s SET ", b.from); err != nil {
 		return err
 	}
 

vendor/github.com/go-xorm/builder/circle.yml

@@ -1,12 +0,0 @@
-dependencies:
-  override:
-    # './...' is a relative pattern which means all subdirectories
-    - go get -t -d -v ./...
-    - go build -v
-    - go get -u github.com/golang/lint/golint
-
-test:
-  override:
-    # './...' is a relative pattern which means all subdirectories
-    - golint ./...
-    - go test -v -race

vendor/github.com/go-xorm/builder/cond.go

@@ -5,7 +5,6 @@
 package builder
 
 import (
-	"bytes"
 	"io"
 )
 
@@ -19,15 +18,15 @@ var _ Writer = NewWriter()
 
 // BytesWriter implments Writer and save SQL in bytes.Buffer
 type BytesWriter struct {
-	writer *bytes.Buffer
-	buffer []byte
+	writer *StringBuilder
 	args   []interface{}
 }
 
 // NewWriter creates a new string writer
 func NewWriter() *BytesWriter {
-	w := &BytesWriter{}
-	w.writer = bytes.NewBuffer(w.buffer)
+	w := &BytesWriter{
+		writer: &StringBuilder{},
+	}
 	return w
 }
 
@@ -73,15 +72,3 @@ func (condEmpty) Or(conds ...Cond) Cond {
 func (condEmpty) IsValid() bool {
 	return false
 }
-
-func condToSQL(cond Cond) (string, []interface{}, error) {
-	if cond == nil || !cond.IsValid() {
-		return "", nil, nil
-	}
-
-	w := NewWriter()
-	if err := cond.WriteTo(w); err != nil {
-		return "", nil, err
-	}
-	return w.writer.String(), w.args, nil
-}

vendor/github.com/go-xorm/builder/cond_and.go

@@ -25,7 +25,9 @@ func And(conds ...Cond) Cond {
 func (and condAnd) WriteTo(w Writer) error {
 	for i, cond := range and {
 		_, isOr := cond.(condOr)
-		if isOr {
+		_, isExpr := cond.(expr)
+		wrap := isOr || isExpr
+		if wrap {
 			fmt.Fprint(w, "(")
 		}
 
@@ -34,7 +36,7 @@ func (and condAnd) WriteTo(w Writer) error {
 			return err
 		}
 
-		if isOr {
+		if wrap {
 			fmt.Fprint(w, ")")
 		}
 

vendor/github.com/go-xorm/builder/cond_between.go

@@ -17,10 +17,35 @@ var _ Cond = Between{}
 
 // WriteTo write data to Writer
 func (between Between) WriteTo(w Writer) error {
-	if _, err := fmt.Fprintf(w, "%s BETWEEN ? AND ?", between.Col); err != nil {
+	if _, err := fmt.Fprintf(w, "%s BETWEEN ", between.Col); err != nil {
 		return err
 	}
-	w.Append(between.LessVal, between.MoreVal)
+	if lv, ok := between.LessVal.(expr); ok {
+		if err := lv.WriteTo(w); err != nil {
+			return err
+		}
+	} else {
+		if _, err := fmt.Fprint(w, "?"); err != nil {
+			return err
+		}
+		w.Append(between.LessVal)
+	}
+
+	if _, err := fmt.Fprint(w, " AND "); err != nil {
+		return err
+	}
+
+	if mv, ok := between.MoreVal.(expr); ok {
+		if err := mv.WriteTo(w); err != nil {
+			return err
+		}
+	} else {
+		if _, err := fmt.Fprint(w, "?"); err != nil {
+			return err
+		}
+		w.Append(between.MoreVal)
+	}
+
 	return nil
 }
 

vendor/github.com/go-xorm/builder/cond_compare.go

@@ -10,7 +10,13 @@ import "fmt"
 func WriteMap(w Writer, data map[string]interface{}, op string) error {
 	var args = make([]interface{}, 0, len(data))
 	var i = 0
-	for k, v := range data {
+	keys := make([]string, 0, len(data))
+	for k := range data {
+		keys = append(keys, k)
+	}
+
+	for _, k := range keys {
+		v := data[k]
 		switch v.(type) {
 		case expr:
 			if _, err := fmt.Fprintf(w, "%s%s(", k, op); err != nil {

vendor/github.com/go-xorm/builder/cond_eq.go

@@ -4,7 +4,10 @@
 
 package builder
 
-import "fmt"
+import (
+	"fmt"
+	"sort"
+)
 
 // Incr implements a type used by Eq
 type Incr int
@@ -19,7 +22,8 @@ var _ Cond = Eq{}
 
 func (eq Eq) opWriteTo(op string, w Writer) error {
 	var i = 0
-	for k, v := range eq {
+	for _, k := range eq.sortedKeys() {
+		v := eq[k]
 		switch v.(type) {
 		case []int, []int64, []string, []int32, []int16, []int8, []uint, []uint64, []uint32, []uint16, []interface{}:
 			if err := In(k, v).WriteTo(w); err != nil {
@@ -94,3 +98,15 @@ func (eq Eq) Or(conds ...Cond) Cond {
 func (eq Eq) IsValid() bool {
 	return len(eq) > 0
 }
+
+// sortedKeys returns all keys of this Eq sorted with sort.Strings.
+// It is used internally for consistent ordering when generating
+// SQL, see https://github.com/go-xorm/builder/issues/10
+func (eq Eq) sortedKeys() []string {
+	keys := make([]string, 0, len(eq))
+	for key := range eq {
+		keys = append(keys, key)
+	}
+	sort.Strings(keys)
+	return keys
+}

vendor/github.com/go-xorm/builder/cond_like.go

@@ -16,7 +16,7 @@ func (like Like) WriteTo(w Writer) error {
 	if _, err := fmt.Fprintf(w, "%s LIKE ?", like[0]); err != nil {
 		return err
 	}
-	// FIXME: if use other regular express, this will be failed. but for compitable, keep this
+	// FIXME: if use other regular express, this will be failed. but for compatible, keep this
 	if like[1][0] == '%' || like[1][len(like[1])-1] == '%' {
 		w.Append(like[1])
 	} else {

vendor/github.com/go-xorm/builder/cond_neq.go

@@ -4,7 +4,10 @@
 
 package builder
 
-import "fmt"
+import (
+	"fmt"
+	"sort"
+)
 
 // Neq defines not equal conditions
 type Neq map[string]interface{}
@@ -15,7 +18,8 @@ var _ Cond = Neq{}
 func (neq Neq) WriteTo(w Writer) error {
 	var args = make([]interface{}, 0, len(neq))
 	var i = 0
-	for k, v := range neq {
+	for _, k := range neq.sortedKeys() {
+		v := neq[k]
 		switch v.(type) {
 		case []int, []int64, []string, []int32, []int16, []int8:
 			if err := NotIn(k, v).WriteTo(w); err != nil {
@@ -76,3 +80,15 @@ func (neq Neq) Or(conds ...Cond) Cond {
 func (neq Neq) IsValid() bool {
 	return len(neq) > 0
 }
+
+// sortedKeys returns all keys of this Neq sorted with sort.Strings.
+// It is used internally for consistent ordering when generating
+// SQL, see https://github.com/go-xorm/builder/issues/10
+func (neq Neq) sortedKeys() []string {
+	keys := make([]string, 0, len(neq))
+	for key := range neq {
+		keys = append(keys, key)
+	}
+	sort.Strings(keys)
+	return keys
+}

vendor/github.com/go-xorm/builder/cond_not.go

@@ -21,6 +21,18 @@ func (not Not) WriteTo(w Writer) error {
 		if _, err := fmt.Fprint(w, "("); err != nil {
 			return err
 		}
+	case Eq:
+		if len(not[0].(Eq)) > 1 {
+			if _, err := fmt.Fprint(w, "("); err != nil {
+				return err
+			}
+		}
+	case Neq:
+		if len(not[0].(Neq)) > 1 {
+			if _, err := fmt.Fprint(w, "("); err != nil {
+				return err
+			}
+		}
 	}
 
 	if err := not[0].WriteTo(w); err != nil {
@@ -32,6 +44,18 @@ func (not Not) WriteTo(w Writer) error {
 		if _, err := fmt.Fprint(w, ")"); err != nil {
 			return err
 		}
+	case Eq:
+		if len(not[0].(Eq)) > 1 {
+			if _, err := fmt.Fprint(w, ")"); err != nil {
+				return err
+			}
+		}
+	case Neq:
+		if len(not[0].(Neq)) > 1 {
+			if _, err := fmt.Fprint(w, ")"); err != nil {
+				return err
+			}
+		}
 	}
 
 	return nil

vendor/github.com/go-xorm/builder/cond_or.go

@@ -27,10 +27,12 @@ func (o condOr) WriteTo(w Writer) error {
 	for i, cond := range o {
 		var needQuote bool
 		switch cond.(type) {
-		case condAnd:
+		case condAnd, expr:
 			needQuote = true
 		case Eq:
 			needQuote = (len(cond.(Eq)) > 1)
+		case Neq:
+			needQuote = (len(cond.(Neq)) > 1)
 		}
 
 		if needQuote {

vendor/github.com/go-xorm/builder/error.go

@@ -8,9 +8,33 @@ import "errors"
 
 var (
 	// ErrNotSupportType not supported SQL type error
-	ErrNotSupportType = errors.New("not supported SQL type")
+	ErrNotSupportType = errors.New("Not supported SQL type")
 	// ErrNoNotInConditions no NOT IN params error
 	ErrNoNotInConditions = errors.New("No NOT IN conditions")
 	// ErrNoInConditions no IN params error
 	ErrNoInConditions = errors.New("No IN conditions")
+	// ErrNeedMoreArguments need more arguments
+	ErrNeedMoreArguments = errors.New("Need more sql arguments")
+	// ErrNoTableName no table name
+	ErrNoTableName = errors.New("No table indicated")
+	// ErrNoColumnToInsert no column to update
+	ErrNoColumnToUpdate = errors.New("No column(s) to update")
+	// ErrNoColumnToInsert no column to update
+	ErrNoColumnToInsert = errors.New("No column(s) to insert")
+	// ErrNotSupportDialectType not supported dialect type error
+	ErrNotSupportDialectType = errors.New("Not supported dialect type")
+	// ErrNotUnexpectedUnionConditions using union in a wrong way
+	ErrNotUnexpectedUnionConditions = errors.New("Unexpected conditional fields in UNION query")
+	// ErrUnsupportedUnionMembers unexpected members in UNION query
+	ErrUnsupportedUnionMembers = errors.New("Unexpected members in UNION query")
+	// ErrUnexpectedSubQuery Unexpected sub-query in SELECT query
+	ErrUnexpectedSubQuery = errors.New("Unexpected sub-query in SELECT query")
+	// ErrDialectNotSetUp dialect is not setup yet
+	ErrDialectNotSetUp = errors.New("Dialect is not setup yet, try to use `Dialect(dbType)` at first")
+	// ErrInvalidLimitation offset or limit is not correct
+	ErrInvalidLimitation = errors.New("Offset or limit is not correct")
+	// ErrUnnamedDerivedTable Every derived table must have its own alias
+	ErrUnnamedDerivedTable = errors.New("Every derived table must have its own alias")
+	// ErrInconsistentDialect Inconsistent dialect in same builder
+	ErrInconsistentDialect = errors.New("Inconsistent dialect in same builder")
 )

vendor/github.com/go-xorm/builder/go.mod

@@ -0,0 +1 @@
+module "github.com/go-xorm/builder"

vendor/github.com/go-xorm/builder/sql.go

@@ -0,0 +1,156 @@
+// Copyright 2018 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 builder
+
+import (
+	sql2 "database/sql"
+	"fmt"
+	"reflect"
+	"time"
+)
+
+func condToSQL(cond Cond) (string, []interface{}, error) {
+	if cond == nil || !cond.IsValid() {
+		return "", nil, nil
+	}
+
+	w := NewWriter()
+	if err := cond.WriteTo(w); err != nil {
+		return "", nil, err
+	}
+	return w.writer.String(), w.args, nil
+}
+
+func condToBoundSQL(cond Cond) (string, error) {
+	if cond == nil || !cond.IsValid() {
+		return "", nil
+	}
+
+	w := NewWriter()
+	if err := cond.WriteTo(w); err != nil {
+		return "", err
+	}
+	return ConvertToBoundSQL(w.writer.String(), w.args)
+}
+
+// ToSQL convert a builder or conditions to SQL and args
+func ToSQL(cond interface{}) (string, []interface{}, error) {
+	switch cond.(type) {
+	case Cond:
+		return condToSQL(cond.(Cond))
+	case *Builder:
+		return cond.(*Builder).ToSQL()
+	}
+	return "", nil, ErrNotSupportType
+}
+
+// ToBoundSQL convert a builder or conditions to parameters bound SQL
+func ToBoundSQL(cond interface{}) (string, error) {
+	switch cond.(type) {
+	case Cond:
+		return condToBoundSQL(cond.(Cond))
+	case *Builder:
+		return cond.(*Builder).ToBoundSQL()
+	}
+	return "", ErrNotSupportType
+}
+
+func noSQLQuoteNeeded(a interface{}) bool {
+	switch a.(type) {
+	case int, int8, int16, int32, int64:
+		return true
+	case uint, uint8, uint16, uint32, uint64:
+		return true
+	case float32, float64:
+		return true
+	case bool:
+		return true
+	case string:
+		return false
+	case time.Time, *time.Time:
+		return false
+	}
+
+	t := reflect.TypeOf(a)
+	switch t.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return true
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		return true
+	case reflect.Float32, reflect.Float64:
+		return true
+	case reflect.Bool:
+		return true
+	case reflect.String:
+		return false
+	}
+
+	return false
+}
+
+// ConvertToBoundSQL will convert SQL and args to a bound SQL
+func ConvertToBoundSQL(sql string, args []interface{}) (string, error) {
+	buf := StringBuilder{}
+	var i, j, start int
+	for ; i < len(sql); i++ {
+		if sql[i] == '?' {
+			_, err := buf.WriteString(sql[start:i])
+			if err != nil {
+				return "", err
+			}
+			start = i + 1
+
+			if len(args) == j {
+				return "", ErrNeedMoreArguments
+			}
+
+			arg := args[j]
+			if namedArg, ok := arg.(sql2.NamedArg); ok {
+				arg = namedArg.Value
+			}
+
+			if noSQLQuoteNeeded(arg) {
+				_, err = fmt.Fprint(&buf, arg)
+			} else {
+				_, err = fmt.Fprintf(&buf, "'%v'", arg)
+			}
+			if err != nil {
+				return "", err
+			}
+			j = j + 1
+		}
+	}
+	_, err := buf.WriteString(sql[start:])
+	if err != nil {
+		return "", err
+	}
+	return buf.String(), nil
+}
+
+// ConvertPlaceholder replaces ? to $1, $2 ... or :1, :2 ... according prefix
+func ConvertPlaceholder(sql, prefix string) (string, error) {
+	buf := StringBuilder{}
+	var i, j, start int
+	for ; i < len(sql); i++ {
+		if sql[i] == '?' {
+			if _, err := buf.WriteString(sql[start:i]); err != nil {
+				return "", err
+			}
+
+			start = i + 1
+			j = j + 1
+
+			if _, err := buf.WriteString(fmt.Sprintf("%v%d", prefix, j)); err != nil {
+				return "", err
+			}
+		}
+	}
+
+	if _, err := buf.WriteString(sql[start:]); err != nil {
+		return "", err
+	}
+
+	return buf.String(), nil
+}

vendor/github.com/go-xorm/builder/string_builder.go

@@ -0,0 +1,119 @@
+// Copyright 2017 The Go 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 builder
+
+import (
+	"unicode/utf8"
+	"unsafe"
+)
+
+// A StringBuilder is used to efficiently build a string using Write methods.
+// It minimizes memory copying. The zero value is ready to use.
+// Do not copy a non-zero Builder.
+type StringBuilder struct {
+	addr *StringBuilder // of receiver, to detect copies by value
+	buf  []byte
+}
+
+// noescape hides a pointer from escape analysis.  noescape is
+// the identity function but escape analysis doesn't think the
+// output depends on the input. noescape is inlined and currently
+// compiles down to zero instructions.
+// USE CAREFULLY!
+// This was copied from the runtime; see issues 23382 and 7921.
+//go:nosplit
+func noescape(p unsafe.Pointer) unsafe.Pointer {
+	x := uintptr(p)
+	return unsafe.Pointer(x ^ 0)
+}
+
+func (b *StringBuilder) copyCheck() {
+	if b.addr == nil {
+		// This hack works around a failing of Go's escape analysis
+		// that was causing b to escape and be heap allocated.
+		// See issue 23382.
+		// TODO: once issue 7921 is fixed, this should be reverted to
+		// just "b.addr = b".
+		b.addr = (*StringBuilder)(noescape(unsafe.Pointer(b)))
+	} else if b.addr != b {
+		panic("strings: illegal use of non-zero Builder copied by value")
+	}
+}
+
+// String returns the accumulated string.
+func (b *StringBuilder) String() string {
+	return *(*string)(unsafe.Pointer(&b.buf))
+}
+
+// Len returns the number of accumulated bytes; b.Len() == len(b.String()).
+func (b *StringBuilder) Len() int { return len(b.buf) }
+
+// Reset resets the Builder to be empty.
+func (b *StringBuilder) Reset() {
+	b.addr = nil
+	b.buf = nil
+}
+
+// grow copies the buffer to a new, larger buffer so that there are at least n
+// bytes of capacity beyond len(b.buf).
+func (b *StringBuilder) grow(n int) {
+	buf := make([]byte, len(b.buf), 2*cap(b.buf)+n)
+	copy(buf, b.buf)
+	b.buf = buf
+}
+
+// Grow grows b's capacity, if necessary, to guarantee space for
+// another n bytes. After Grow(n), at least n bytes can be written to b
+// without another allocation. If n is negative, Grow panics.
+func (b *StringBuilder) Grow(n int) {
+	b.copyCheck()
+	if n < 0 {
+		panic("strings.Builder.Grow: negative count")
+	}
+	if cap(b.buf)-len(b.buf) < n {
+		b.grow(n)
+	}
+}
+
+// Write appends the contents of p to b's buffer.
+// Write always returns len(p), nil.
+func (b *StringBuilder) Write(p []byte) (int, error) {
+	b.copyCheck()
+	b.buf = append(b.buf, p...)
+	return len(p), nil
+}
+
+// WriteByte appends the byte c to b's buffer.
+// The returned error is always nil.
+func (b *StringBuilder) WriteByte(c byte) error {
+	b.copyCheck()
+	b.buf = append(b.buf, c)
+	return nil
+}
+
+// WriteRune appends the UTF-8 encoding of Unicode code point r to b's buffer.
+// It returns the length of r and a nil error.
+func (b *StringBuilder) WriteRune(r rune) (int, error) {
+	b.copyCheck()
+	if r < utf8.RuneSelf {
+		b.buf = append(b.buf, byte(r))
+		return 1, nil
+	}
+	l := len(b.buf)
+	if cap(b.buf)-l < utf8.UTFMax {
+		b.grow(utf8.UTFMax)
+	}
+	n := utf8.EncodeRune(b.buf[l:l+utf8.UTFMax], r)
+	b.buf = b.buf[:l+n]
+	return n, nil
+}
+
+// WriteString appends the contents of s to b's buffer.
+// It returns the length of s and a nil error.
+func (b *StringBuilder) WriteString(s string) (int, error) {
+	b.copyCheck()
+	b.buf = append(b.buf, s...)
+	return len(s), nil
+}