WHERE name IN ('Google','菜鸟教程'); 1. 2. IN 与 = 的异同 相同点:均在WHERE中使用作为筛选条件之一、均是等于的含义 不同点:IN可以规定多个值,等于规定一个值 IN SELECT column_name(s) FROM table_name WHERE column_name IN (value1,value2,...); = SELECT column_name(s) FROM table_name...
使用关联查询,并用组合的字段,起别名的方式过滤,报错提示:SQL 错误 [1052] [23000]: Column 'code' in where clause is ambiguous selectconcat(ti.code,'-', sti.code)ascode, sti.*, ti.nameastask_namefromsub_task_info stileftjointask_info tionti.id=ti.task_idwherecodelike'%001%'; 解决方案1...
SQL语句出现Unknown column ‘xxx’ in ‘where clause错误,从报错信息我们很容易得出列名称不存在的结论,但是,很多时候并不是列名出错造成的,而是由于拼凑sql语句时对字符类型数据没有用引号引起来造
limit 0, 10]; Column 'created_by' in where clause is ambiguous; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLIntegrityConstraintViolationException: Column 'created_by' in where clause is ambiguous 原因: 说明SQL语句中有重复的created_by功能调用,并且在Mapper文件中,多表关联查询中有相同的...
The WHERE clause is like this: WHERE [tblBody].[Language] = @Language AND [tblTitle].[Language] = @Language but would be nice if it would be like this: SELECT (if body is in my preferred language get that body; else give me one (maybe I understood it)) I hope you understood...
1 Using multiple conditions in SQL WHERE clause 1 Applying SQL WHERE Conditionally 0 sql conditional where clause 0 Condition on the WHERE clause 0 Condition within Where Clause 0 SQL Query with condition in where clause 1 where clause conditions in SQL Hot Network Questions Automatic...
在这里,我们从经理表中选择了所有经理的 Ssn,然后,我们将此查询的结果传递给 IN 运算符中的主查询,该查询将获取具有与从经理表中获取的相同 Ssn 的所有员工的详细信息。嵌套查询。 有关SQL IN 运算符的要点: The SQL IN operator allows you to specify multiple values in a WHERE clause. ...
mysql> select avg(score) -> from choose -> where student.student_no = choose.student_no and student_name = '张三'; 子查询 会报错:1054 - Unknown column 'student.student_no' in 'where clause' 这样的查询语句构成的子查询便为相关子查询。 作者:会弹吉它的程序员链接:juejin.cn/post/69274545来...
The WHERE clause with NOT IN operator is the negation of WHERE clause with the IN operator. If you use WHERE with the IN operator, the DML statement will act on the the list of values (of a column) specified Whereas, if you use WHERE with the NOT IN operator, the DML operation is ...
WHERECustomerID=1; Try it Yourself » Operators in The WHERE Clause You can use other operators than the=operator to filter the search. Example Select all customers with a CustomerID greater than 80: SELECT*FROMCustomers WHERECustomerID >80; ...