WHERE Greater Than Subquery It is possible to use a subquery in the WHERE clause as well. Just like in the previous examples, this can be done to remove the separate step of finding a value to be updated and then to run the query to update it. We can continue working with our example...
Executing the the subquery on its own makes no sense, because in the UPDATE case the subquery must return not more than one row/value for each row in the update table (Agtabe1). To find out if the subquery returns too many rows for any of the Agtable1 rows, you can simply do some...
Description:From version 4.1.1-alpha it seems to be not allowed to use UPDATE with a subquery. If you try my example you'll get: [Zeus] ERROR 1149: You have an error in your SQL syntax. Check the manual that corresponds to your MySQL server version for the right syntax to use Notice...
The following is an example shows an Update SQL statement with an “IN” subquery. It updates records from emp_subsidiary that satisfies the “IN” subquery conditions. update emp_subsidiary set emp_name ='Deleted Name' where emp_dept in (select dpt_id from department where dpt_avg_salary<...
Works with: SQL Server, PostgreSQL (not Oracle, MySQL) You can use a subquery in theWITH clause(called a CTE or Common Table Expression) to update data in one table from another table. WITHsubqueryAS(SELECTaccount_id,account_number,person_idFROMaccount)UPDATEpersonSETaccount_number=subquery.acco...
Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression. My desired update result is 3, since there are three ordernumbers in the table with either IV or INV ...
I. Specifying a subquery in the SET clauseThe following example uses a subquery in the SET clause to determine the value that is used to update the column. The subquery must return only a scalar value (that is, a single value per row). The example modifies the SalesYTD column in the ...
SQL IN with a Subquery Retrieving data based on values in an array is a great option, but what if you don’t know the values or they are too numerous to list? We can always nest a subquery inside the WHERE IN clause. In the following example, we want to return the first name, las...
When you use a correlated subquery in an UPDATE statement, the correlation name refers to the rows that you want to update. For example, when all activities of a project must be completed before September 1983, your department considers that project to be a priority project. You can use the...
SQL UPDATE 语句 Update 语句用于修改表中的数据。 语法： UPDATE 表名称 SET 列名称 = 新值 ...