WITHsubqueryAS(SELECTaccount_id,account_number,person_idFROMaccount)UPDATEpersonSETaccount_number=subquery.account_numberFROMsubqueryWHEREperson.person_id=subquery.person_id; This has the advantage of making the UPDATE part of the statement simple, and any complex logic for the query can go in the W...
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<...
以下示例显示了返回相同结果集和执行计划的SELECT子查询和SELECT联接: SQL复制 USEAdventureWorks2022; GO/* SELECT statement built using a subquery. */SELECT[Name]FROMProduction.ProductWHEREListPrice = (SELECTListPriceFROMProduction.ProductWHERE[Name] ='Chainring Bolts'); GO/* SELECT statement built using...
mysql> WITH actors_s AS -> (SELECT actor_id, first_name, last_name -> FROM actor -> WHERE last_name LIKE 'S%' -> ), -> actors_s_pg AS -> (SELECT s.actor_id, s.first_name, s.last_name, -> f.film_id, f.title -> FROM actors_s s -> INNER JOIN film_actor fa -> ...
UPDATEemployeesSETlastname ='Hill'WHEREemployeeID =3;Code language:SQL (Structured Query Language)(sql) Execute the SELECT statement above again to verify the change: SQL UPDATE multiple columns For example, Janet moved to a new house, therefore, her address changed. Now, you have to change ...
The subquery finds all the category_id values where COUNT is 1. We don’t need to have COUNT in the SELECT part of the subquery, however, if we do, the query will display an error. The UPDATE statement will update the price where the category meets the criteria of the subquery. Our...
UPDATE Employee SET email = 'jking@test.com' WHERE EmpId = 1;Now, the Select * from Employee query will display the following result. EmpIdFirstNameLastNameEmailPhoneNoSalary 1 'John' 'King' 'jking@test.com' '123.123.1834' 33000 2 'James' 'Bond' 3 'Neena' 'Kochhar' 'neena@test....
The SQL WHERE IN clause is used to specify a list of values in aSELECT,INSERT,UPDATE, orDELETEstatement. The clause is used to help narrow down results from a query and is generally used in conjunction with other clauses such asWHERE,HAVING, andORDER BY. ...
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子查询(Subquery)是嵌套在其他SQL查询中的查询。 子查询可以用在SELECT、INSERT、UPDATE、DELETE语句中,以及在WHERE子句、HAVING子句或FROM子句中。 子查询可以返回一个值、一列值或多行多列值,根据这些返回类型,子查询可以分为标量子查询、列子查询、行子查询和表子查询。 (一)不同表之间 不同表之间的子查询...