In this example, if the deptno column has a 10 in it, the SQL query will return the value accounting rather than the number 10. If the deptno is not 10, 20, 30, or 40, then the CASE statement will fall through to the ELSE clause, which will return unassigned. Note that with a s...
With yourcaseexpression in hand, using it is a matter of pasting it in the appropriate place in your SQL. How to use CASE for IF-THEN logic in SQL SELECT If you want to see the grade for each exam, select thecaseexpression like a regular column: It’s a good idea to give the...
UPDATE tab1 SET budgpost_gr1= CASE WHEN (budgpost in ('1001','1012','50055'...
是指在Oracle数据库中,使用SELECT语句查询数据时,可以将一个SELECT语句作为子查询嵌套在另一个SELECT语句的CASE语句中。 具体来说,CASE语句是一种条件表达式,用于根据条件返...
SELECT CASE WHEN a < b THEN 'hello' WHEN d < e THEN 'goodbye' END FROM suppliers; Frequently Asked Questions Question:Can you create a CASE statement that evaluates two different fields? I want to return a value based on the combinations in two different fields. ...
如何使用 Oracle Case Statement 测试不等式问题描述 投票:0回答:3这很好用: select case (1+2) -- (or_some_more_complicated_formula_yielding_a_numeric_result) when 200 then '200' when 100 then '100' else 'other' end hi_med_low from dual ; 但我需要做更多这样的事情: select case (1+...
CASE expression syntax is similar to an IF-THEN-ELSE statement. Oracle checks each condition starting from the first condition (left to right). When a particular condition is satisfied (WHEN part) the expression returns the tagged value (THEN part). If none of the conditions are matched, the...
newInstance(); Statement stmt = null; ResultSet rs=null; String oraUrl="jdbc:oracle:thin:@127.0.0.1:1521:orcl"; String oraUser="TEST"; String oraPWD="123456"; try { DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver()); }catch (SQLException e) { out.print("filed!!"); }...
You can use a CASE expression in any statement or clause that accepts a valid expression. For example, you can use the CASE expression in statements such as SELECT, UPDATE, or DELETE, and in clauses like SELECT, WHERE, HAVING, and ORDDER BY. Oracle CASE expression has two formats: the...
Without an ORDER BY clause, the order in which rows are returned between one SELECT statement and another is not guaranteed. When ORDS paginates SQL-based responses, a separate and unique query is used for each page request (i.e. offsets and the included "next" URL). Read more about pa...