Node.js学习10~Sequelize基本sql学习

Posted 2022-02-06 秋9

Sequelize常用的select,delete,update,insert列表如下：

sql	orm
select	findAll,findOne,findById,findOrCreate,findAndCountAll
delete	destroy
update	update
insert	create

select举例：

sql	orm
SELECT foo, bar ...	Model.findAll(attributes: ['foo', 'bar']);
SELECT foo, bar AS baz ...	Model.findAll(attributes: ['foo', ['bar', 'baz']]);
SELECT COUNT(hats) AS no_hats ...	Model.findAll(attributes: [[sequelize.fn('COUNT', sequelize.col('hats')), 'no_hats']]);
SELECT id, foo, bar, quz ...	Model.findAll(attributes: exclude: ['baz'] );

where条件，这个是学习重点

op	define
$and: a: 5	AND (a = 5)
$or: [a: 5, a: 6]	(a = 5 OR a = 6)
$gt: 6,	> 6
$gte: 6,	>= 6
$lt: 10,	< 10
$lte: 10,	<= 10
$ne: 20,	!= 20
$between: [6, 10],	BETWEEN 6 AND 10
$notBetween: [11, 15],	NOT BETWEEN 11 AND 15
$in: [1, 2],	IN [1, 2]
$notIn: [1, 2],	NOT IN [1, 2]
$like: '%hat',	LIKE '%hat'
$notLike: '%hat'	NOT LIKE '%hat'
$iLike: '%hat'	ILIKE '%hat' (case insensitive) (PG only)
$notILike: '%hat'	NOT ILIKE '%hat' (PG only)
$like: $any: ['cat', 'hat']	LIKE ANY ARRAY['cat', 'hat'] - also works for iLike and notLike
$overlap: [1, 2]	&& [1, 2] (PG array overlap operator)
$contains: [1, 2]	@> [1, 2] (PG array contains operator)
$contained: [1, 2]	<@ [1, 2] (PG array contained by operator)
$any: [2,3]	ANY ARRAY[2, 3]::INTEGER (PG only)
$col: 'user.organization_id'	"user"."organization_id", with dialect specific column identifiers, PG in this example --$col取表的字段