lambdaQueryWrapper常用方法

apply(“date_format(dateColumn,‘%Y-%m-%d’)={0}”,“2022-02-08”)------>date_format(dateColum,‘%Y-%m-%d’)=‘2022-02-08’and(i->i.eq(“name”,“张三”).ne(“age”,20)------>and(name=‘张三’andage20)notLike(“name”,“张三”)-

普通网友

9856人浏览 · 2022-07-28 14:31:11

普通网友 · 2022-07-28 14:31:11 发布

函数名

说明

例子

等于

eq(“name”,“张三”) ------> name = ‘张三’

不等于

ne(“name”,“张三”) ------> name <> ‘张三’

大于

gt(“age”,18) ------> age > 18

大于等于

ge(“age”,18) ------> age >= 18

小于

lt(“age”,18) ------> age < 18

小于等于

le(“age”,18) ------> age <= 18

between

BETWEEN 值1 AND 值2

between(“age”,18,20) ------> age between 18 and 20

notBetween

NOT BETWEEN 值1 AND 值2

notBetween(“age”,18,20) ------> age not between 18 and 20

LIKE ‘%值%’

like(“name”,“张三”) ------> name like ‘%张三%’

notLike

NOT LIKE ‘%值%’

notLike(“name”,“张三”) ------> name not like ‘%张三%’

likeLeft

LIKE ‘%值’

likeLeft(“name”,“张三”) ------> name like ‘%张三’

likeRight

LIKE ‘值%’

likeRight(“name”,“张三”) ------> name like ‘张三%’

isNull

字段 IS NULL

isNull(“name”) ------> name is null

isNotNull

字段 IS NOT NULL

isNotNull(“name”) ------> name is not null

字段 IN (v0,v1,…)

in(“age”,{18,20,30}) ------> age in (18,20,30)

notIn

字段 NOT IN (v0,v1,…)

notIn(“age”,18,20,30) ------> age not in (18,20,30)

inSql

字段 IN (sql语句)

inSql(“id”,“select id from table where id < 3”) ------> id in (select id from table where id < 3)

notInSql

字段 NOT IN (sql语句)

notInSql(“id”,“select id from table where id < 3”) ------> id not in (select id from table where id < 3)

groupBy

分组: GROUP BY 字段,…

groupBy(“id”,“name”) ------> group by id,name

orderByAsc

排序：ORDERBY 字段,… ASC

orderByAsc(“id”,“name”) ------> order by id ASC,name ASC

orderByDesc

排序：ORDERBY 字段,… DESC

orderByDesc(“id”,“name”) ------> order by id DESC,name DESC

orderBy

排序：ORDERBY 字段,…

orderBy(“id”,“name”) ------> order by id DESC,name DESC

having

HAVING (slq语句)

having(“sum(age) > {0}”,11) ------>having sum(age) > 11

拼接 OR

注意事项: 主动调用or表示紧接着下一个方法不是用and连接!(不调用or则默认为使用and连接) eq(“id”,1).or().eq(“name”,“张三”) ------> id = 1 or name = ‘张三’

and

AND 嵌套

and(i -> i.eq(“name”,“张三”).ne(“age”,20) ------> and (name = ‘张三’ and age <> 20)

apply

拼接sql

注意事项：该方法可用于数据库函数动态入参的params对应前面sqlHaving内部的{index}部分，这样是不会有sql注入风险的，反之会有！apply(“date_format(dateColumn,‘%Y-%m-%d’) = {0}”,“2022-02-08”) ------> date_format(dateColum, ‘%Y-%m-%d’) = ‘2022-02-08’

last

无视优化规则直接拼接到sql的最后

注意事项：只能调用一次，多次调用以最后一次为准，有sql注入的风险，请谨慎使用 last(“limt 2”)

exists

拼接EXISTS (sql语句)

exists(“select id from table where age = 20”) ------> exists (select id from table where age = 20)

notExists

拼接NOT EXISTS (sql语句)

notExists(“select id from table where age = 20”) ------> not exists (select id from table where age = 20)

nested

正常嵌套不带AND 或者 OR

nested(i -> i.eq(“name”,“张三”).ne(“age”,20)) ------> nested(name = ‘张三’ and age <> 20)