If you need to use this logic in many tables you could place it in a PL/SQL function. Then call this function in your SQL: FromOracle Database 23ai, theautomatic SQL transpilercan extract SQL expressions in PL/SQL. These are then part of the SQL statement, so at runtime it's as-i...
只可以用在pl/sql中,不能用在SQL中,结束标志是END CASE!Case Statement 相当于一组IF…THEN…ELSE…END IF语句,不需要返回值,只是在条件匹配的时候执行某种操作而已,所以在每个WHEN…THEN之后需要有一个分号,表示一条执行语句! CASE {variable or expression} WHEN {value} THEN {one or more operations};[WHE...
In the following example, the optimizer calculates the degree of parallelism. The statement always runs in parallel. SELECT /*+ PARALLEL/ last_name FROM employees; In the following example, the optimizer calculates the degree of parallelism, but that degree may be 1, in which case the statement...
The Oracle/PLSQL CASE statement has the functionality of an IF-THEN-ELSE statement. Starting in Oracle 9i, you can use the CASE statement within a SQL statement. Syntax The syntax for the CASE statement in Oracle/PLSQL is: CASE [ expression ] WHEN condition_1 THEN result_1 WHEN condition...
ID || ' '; END LOOP; --拼接主SQL TARGET_RESULTS := TARGET_RESULTS || 'FROM (SELECT a.PRO_NAME,a.CLASS_NAME,a.ID,a.MAIN_DATA_PRO_CODE,b.TIME '; TARGET_RESULTS := TARGET_RESULTS || 'FROM IEW_V_PRO_USER a LEFT JOIN (SELECT DISTINCT PROJECTID,TIME from V_IEW_ACC_DETAIL_...
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+...
JOIN ON条件中的Oracle SQL Case语句虽然在连接中可以使用case表达式，但在这里实际上并不需要，可以使用...
当你在使用 CASE 语句时,如果缺少了右括号,Oracle 数据库会抛出语法错误。这是因为 SQL 语句需要成对的括号来定义语句的边界。 解决方法 确保每个 CASE 语句都有匹配的左括号和右括号。以下是一个正确的 CASE 语句示例: 代码语言:txt 复制 SELECT employee_id, first_name, last_name, CASE department_id WHEN...
JOIN ON条件中的Oracle SQL Case语句虽然在连接中可以使用case表达式，但在这里实际上并不需要，可以使用...
This Oracle tutorial explains how to use the Oracle INSERT statement with syntax, examples, and practice exercises. The Oracle INSERT statement is used to insert a single record or multiple records into a table in Oracle.