The CASE expression is used to compare one expression with a set of expressions in SQL. The result of the CASE expression is a Boolean value, true or false. We can use various DML statements like INSERT, SELECT, DELETE and UPDATE with a CASE statement. In this Tech-Recipes tutorial, we ...
(1 rows affected) (1 rows affected) (1 rows affected) project_no project_name budget --- --- --- p1 Search Engine 120000 p2 Programming 95000 p3 SQL 186500 (3 rows affected) 1> 2> -- Use CASE in the UPDATE statement. 3> 4> UPDATE project SET budget = CASE 5> WHEN budget >...
CASEcan be used in any statement or clause that allows a valid expression. For example, you can useCASEin statements such as SELECT, UPDATE, DELETE and SET, and in clauses such as, IN, WHERE, ORDER BY, and HAVING. Transact-SQL syntax...
Now, I am going to write a query for update. Update NewTable set status= case status when 1 then 0 when 0 then 1 end Run this query and see the output. It works as expected. I hope you enjoy this blog. Happy coding :)Case statement update command sql serverNext...
The CASE expression used in the UPDATE statement allows selecting or setting a new value based on the input conditions. UPDATE table_name SET column_value = CASE WHEN condition1 THEN result1, WHEN condition2 THEN result2 ELSE result3 END ...
SQL UPDATE syntax TheUPDATEstatement changes existing data in one or more rows in a table. The following illustrates the syntax of theUPDATEstatement: UPDATEtableSETcolumn1 = new_value1, column2 = new_value2, ...WHEREcondition;Code language:SQL (Structured Query Language)(sql) ...
CASEcan be used in any statement or clause that allows a valid expression. For example, you can useCASEin statements such as SELECT, UPDATE, DELETE and SET, and in clauses such as, IN, WHERE, ORDER BY, and HAVING. Transact-SQL syntax...
sql_statement_recompile扩展事件 (XEvent) 报告语句级重新编译。 当任何类型的批处理需要语句级重新编译时,会发生此 XEvent。 这包括存储过程、触发器、即席批处理和查询。 可通过几个接口来提交批处理,这类接口包括 sp_executesql、动态 SQL、“准备”方法或“执行”方法。
SQL还可以在一个SELECT语句或UPDATE语句中,表达与面向过程语言一样非常复杂而且灵活的条件分支,不过这需要借助CASE表达式。 之所以叫它CASE“表达式”而不是CASE“语句”(statement),是因为CASE表达式与1+(2-4)或者(x*y)/z一样,都是表达式,在执行时会被整体当作一个值来处理。既然同样是表达式,那么能写1+1这样...
IN id varchar(10) , IN n_str varchar(30) , IN v_str varchar(30) ) BEGIN CASE n_str WHEN n_str = 'profileStatus' THEN UPDATE tbl_contact SET status = 'A' WHERE id = id; -- The above statement updates the entire table instead of the right row ...