WHEN SEARCH CONDIDTION 1 THEN STATEMENT 1; WHEN SEARCH CONDIDTION2 THEN STATEMENT 2; ... WHEN SEARCH CONDIDTIONN THEN STATEMENT N; ELSE STATEMENT N+1; END CASE; 当搜索条件的计算结果为TRUE时,执行控制权传递与之相关的语句。如果任何搜索条件都不会产生TRUE,则会执行与ELSE子句相关的语句。请注意...
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...
Utilizing a case statement in SQL Server to check for NULL date values and returning an empty string Oracle's Guide to Preventing NULL Values in to_date Function Comparing Null and Date Data Types: Is Null Considered Greater? What does null and not null mean in SQL? How do you...
oracle.javatools.db.sql Contains an API for declaratively parsing SQL queries (SELECT statements). Uses ofCaseStatement.WhenTheninoracle.javatools.db.sql Methods inoracle.javatools.db.sqlthat returnCaseStatement.WhenThen Modifier and TypeMethod and Description ...
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-if the function doesn't exist! To do this, ensure thesql_transpilerparameter ison(it'soffby default). When a function in thewhere...
SQL在group by & select子句和CASE运算符中同时使用子查询EN冗长的标题和奇怪的问题:我想在oracle SQL...
在编程中,case表达式是一种条件语句,用于根据不同的条件执行不同的代码块。舍入是一种数学运算,用于将一个数值按照一定的规则进行近似取整。 在case表达式中的舍入,通常指的是在条件判断中对浮点数进...
Summary: in this tutorial, you will learn how to use the PL/SQL CASE statement to control the flow of a program. The CASE statement chooses one sequence of statements to execute out of many possible sequences. The CASE statement has two types: simple CASE statement and searched CASE stateme...
OracleCASEexpression allows you to addif-elselogic to SQL statements without having to call aprocedure. TheCASEexpression evaluates a list of conditions and returns one of the multiple possible results. You can use aCASEexpression in any statement or clause that accepts a valid expression. For ex...
データベース管理に関するOracleとの比較 サーバーレス データの移行と同期 クラスター管理 アカウント管理 データベース管理 データセキュリティと暗号化 PolarDB に接続する PolarProxy バージョン管理 Oracle データベースと互換性のある構成パラメーター バックアップと復元 診断と最適化 ス...