Basic syntax 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)
This Oracle tutorial explains how to use the Oracle/PLSQLCASE statementwith syntax and examples. Description 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 ...
To do this, ensure thesql_transpilerparameter ison(it'soffby default). When a function in thewhereclause is transpiled, you can see the case expression instead of the function in the predicate section of the plan: There are a few differences betweencasein PL/SQL andOracle SQL. Using case ...
Furthermore searched case works in virtually all SQL databases. From that point of view, one could say that searched case is the only case syntax you absolutely need to remember. CASE WHEN <condition> THEN <result> [WHEN <condition> THEN <result> ...] [ELSE <result>] END...
In Oracle 9i, you can use thecasestatement within an SQL statement. It has the functionality of an IF-THEN-ELSE statement. 译:在Oracle 9i中,你可以在SQL语句中使用case条件。它具有IF-THEN-ELSE条件的功能。 The syntax for thecasestatement is: ...
...UPDATE salary SET sex = IF(sex = 'm', 'f', 'm') 也可以利用条件语句,在搜索的时候,直接进行数据转换 select *,(CASE WHEN sex='1'...参考资料: 1、Mysql if case总结 2、Leetcode swap salary 3、select case when if 的一些用法 4、IF Syntax...
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Basic syntax 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 ...
[ ELSE r_else ]ENDCode language:SQL (Structured Query Language)(sql) In this syntax, Oracle compares the input expression (e) to each comparison expression e1, e2, …, en. If the input expression equals any comparison expression, theCASEexpression returns the corresponding result expression (r...
【ORACLE】Oracle提高篇之DECODE DECODE含义 decode(条件,值1,返回值1,值2,返回值2,…值n,返回值n,缺省值) 这个是decode的表达式,具体的含义解释为: DECODE的用法 这里主要说的就是decode的用法,在很多时候这个函数还是很有用的。 1.翻译值 数据截图: 需求:查询出的数据,1表示男生,2表示女生 结果: 2....