eq: 等于 =
例子:eq("name", "老王")
--->name = '老王'
ne: 不等于 <>
例子:ne("name", "老王")
--->name <> '老王'
gt: 大于 >
例子:gt("age", 18)
--->age > 18
ge: 大于等于 >=
例子:ge("age", 18)
--->age >= 18
lt: 小于 <
例子:lt("age", 18)
--->age < 18
le: 小于等于 <=
例子:le("age", 18)
--->age <= 18
between: 值 1 AND 值 2
例子:between("age", 18, 30)
--->age between 18 and 30
notBetween: Not BETWEEN 值 1 AND 值 2
例子:notBetween("age", 18, 30)
--->age not between 18 and 30
like: like'%值%'
例子:like("name", "王")
--->name like '%王%'
notLike: NOT LIKE '%值%'
例子:notLike("name", "王")
--->name not like '%王%'
likeLeft: Like'%值'
例子:likeLeft("name", "王")
--->name like '%王'
likeRight: LIKE'值%'
例子:likeRight("name", "王")
--->name like '王%'
isNull: 字段 IS NULL
例子:isNull("name")
--->name is null
isNotNull:字段 IS NOT NULL
例子:isNotNull("name")
--->name is not null
in: 字段IN(value.get(0),value.get(1),...)
例子:in("age",{1,2,3})
--->age in (1,2,3)
字段 IN (v0, v1, ...)
例子:in("age", 1, 2, 3)
--->age in (1,2,3)
notIn: 字段 IN (value.get(0), value.get(1), ...)
例子:notIn("age",{1,2,3})
--->age not in (1,2,3)
字段 NOT IN (v0, v1, ...)
例子:notIn("age", 1, 2, 3)
--->age not in (1,2,3)
inSql: 字段 IN(SQL语句)
例子1:inSql("age", "1,2,3,4,5,6")
--->age in (1,2,3,4,5,6)
例子2: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)
例子1:notInSql("age", "1,2,3,4,5,6")
--->age not in (1,2,3,4,5,6)
例子2:notInSql("id", "select id from table where id < 3")
--->age not in (select id from table where id < 3)
分组:GROUP BY 字段,...
例子:groupBy("id", "name")
--->group by id,name
升序: ORDER BY 字段,...ASC
例子:orderByAsc("id", "name")
--->order by id ASC,name ASC
降序:ORDER BY 字段,...DESC
例子:orderByDesc("id", "name")
--->order by id DESC,name DESC
排序:OREDR BY 字段,...
例子:orderBy(true, true, "id", "name")
--->order by id ASC,name ASC
聚合函数作为条件:HAVING (sql语句)
例子1:having("sum(age) > 10")
--->having sum(age) > 10(有sql注入风险)
例子2:having("sum(age) > {0}", 11)
--->having sum(age) > 11(推荐使用)
拼接 OR: or()
例子:eq("id",1).or().eq("name","老王")
--->id = 1 or name = '老王'
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)
OR 嵌套:
例子:or(i -> i.eq("name", "李白").ne("status", "活着"))
--->or (name = '李白' and status <> '活着')
AND 嵌套:
例子:and(i -> i.eq("name", "李白").ne("status", "活着"))
--->and (name = '李白' and status <> '活着')
nested:正常嵌套 不带AND 或者 OR
例子:nested(i -> i.eq("name", "李白").ne("status", "活着"))
--->(name = '李白' and status <> '活着')
拼接 sql:apply
例子1:apply("id = 1")
--->id = 1
例子2:apply("date_format(dateColumn,'%Y-%m-%d') = '2008-08-08'")
--->date_format(dateColumn,'%Y-%m-%d') = '2008-08-08'")
例子3:apply("date_format(dateColumn,'%Y-%m-%d') = {0}", "2008-08-08")
--->date_format(dateColumn,'%Y-%m-%d') = '2008-08-08'")
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applySql
内部的{index}
部分.这样是不会有sql注入风险的,反之会有!
无视优化规则直接拼接到 sql 的最后:last
例子:last("limit 1")
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
exists:拼接EXISTS(sql语句)
例子:exists("select id from table where age = 1")
--->exists (select id from table where age = 1)
参考文章:
https://www.cnblogs.com/zhukf/p/12144072.html