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aa7c34cf86
* fix error log when loading issues caused by a xorm bug * upgrade packages * fix fmt * fix Consistency * fix tests
121 lines
3.5 KiB
Go
121 lines
3.5 KiB
Go
// Copyright 2016 The XORM Authors. All rights reserved.
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// Use of this source code is governed by a BSD
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// license that can be found in the LICENSE file.
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/*
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Package builder is a simple and powerful sql builder for Go.
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Make sure you have installed Go 1.1+ and then:
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go get github.com/go-xorm/builder
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WARNNING: Currently, only query conditions are supported. Below is the supported conditions.
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1. Eq is a redefine of a map, you can give one or more conditions to Eq
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import . "github.com/go-xorm/builder"
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sql, args, _ := ToSQL(Eq{"a":1})
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// a=? [1]
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sql, args, _ := ToSQL(Eq{"b":"c"}.And(Eq{"c": 0}))
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// b=? AND c=? ["c", 0]
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sql, args, _ := ToSQL(Eq{"b":"c", "c":0})
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// b=? AND c=? ["c", 0]
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sql, args, _ := ToSQL(Eq{"b":"c"}.Or(Eq{"b":"d"}))
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// b=? OR b=? ["c", "d"]
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sql, args, _ := ToSQL(Eq{"b": []string{"c", "d"}})
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// b IN (?,?) ["c", "d"]
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sql, args, _ := ToSQL(Eq{"b": 1, "c":[]int{2, 3}})
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// b=? AND c IN (?,?) [1, 2, 3]
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2. Neq is the same to Eq
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import . "github.com/go-xorm/builder"
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sql, args, _ := ToSQL(Neq{"a":1})
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// a<>? [1]
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sql, args, _ := ToSQL(Neq{"b":"c"}.And(Neq{"c": 0}))
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// b<>? AND c<>? ["c", 0]
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sql, args, _ := ToSQL(Neq{"b":"c", "c":0})
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// b<>? AND c<>? ["c", 0]
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sql, args, _ := ToSQL(Neq{"b":"c"}.Or(Neq{"b":"d"}))
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// b<>? OR b<>? ["c", "d"]
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sql, args, _ := ToSQL(Neq{"b": []string{"c", "d"}})
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// b NOT IN (?,?) ["c", "d"]
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sql, args, _ := ToSQL(Neq{"b": 1, "c":[]int{2, 3}})
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// b<>? AND c NOT IN (?,?) [1, 2, 3]
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3. Gt, Gte, Lt, Lte
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import . "github.com/go-xorm/builder"
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sql, args, _ := ToSQL(Gt{"a", 1}.And(Gte{"b", 2}))
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// a>? AND b>=? [1, 2]
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sql, args, _ := ToSQL(Lt{"a", 1}.Or(Lte{"b", 2}))
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// a<? OR b<=? [1, 2]
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4. Like
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import . "github.com/go-xorm/builder"
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sql, args, _ := ToSQL(Like{"a", "c"})
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// a LIKE ? [%c%]
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5. Expr you can customerize your sql with Expr
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import . "github.com/go-xorm/builder"
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sql, args, _ := ToSQL(Expr("a = ? ", 1))
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// a = ? [1]
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sql, args, _ := ToSQL(Eq{"a": Expr("select id from table where c = ?", 1)})
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// a=(select id from table where c = ?) [1]
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6. In and NotIn
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import . "github.com/go-xorm/builder"
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sql, args, _ := ToSQL(In("a", 1, 2, 3))
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// a IN (?,?,?) [1,2,3]
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sql, args, _ := ToSQL(In("a", []int{1, 2, 3}))
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// a IN (?,?,?) [1,2,3]
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sql, args, _ := ToSQL(In("a", Expr("select id from b where c = ?", 1))))
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// a IN (select id from b where c = ?) [1]
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7. IsNull and NotNull
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import . "github.com/go-xorm/builder"
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sql, args, _ := ToSQL(IsNull{"a"})
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// a IS NULL []
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sql, args, _ := ToSQL(NotNull{"b"})
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// b IS NOT NULL []
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8. And(conds ...Cond), And can connect one or more condtions via AND
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import . "github.com/go-xorm/builder"
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sql, args, _ := ToSQL(And(Eq{"a":1}, Like{"b", "c"}, Neq{"d", 2}))
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// a=? AND b LIKE ? AND d<>? [1, %c%, 2]
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9. Or(conds ...Cond), Or can connect one or more conditions via Or
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import . "github.com/go-xorm/builder"
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sql, args, _ := ToSQL(Or(Eq{"a":1}, Like{"b", "c"}, Neq{"d", 2}))
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// a=? OR b LIKE ? OR d<>? [1, %c%, 2]
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sql, args, _ := ToSQL(Or(Eq{"a":1}, And(Like{"b", "c"}, Neq{"d", 2})))
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// a=? OR (b LIKE ? AND d<>?) [1, %c%, 2]
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10. Between
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import . "github.com/go-xorm/builder"
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sql, args, _ := ToSQL(Between("a", 1, 2))
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// a BETWEEN 1 AND 2
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11. define yourself conditions
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Since Cond is a interface, you can define yourself conditions and compare with them
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*/
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package builder
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