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...
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...
此外，我使用case语句来创建更多信息并对结果进行分组。但是，此语句抛出以下错误: ORA-00979:不是GROUP ...
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?
用于舍入的SQL嵌套case语句 CASE表达式 渐近表达式的舍入部分 SQL - WHERE中的CASE表达式 减去CASE表达式中的日期 Oracle SQL中的CASE表达式 update中where中的Case表达式 MySQL中的CASE表达式未求值 参数列表中的Case表达式? case表达式中的SUM SQL Server Where子句TSQL中的Case表达式 来自另一个Case表达式的case表达式...
CASE selector WHEN selector_value_1 THEN statements_1 WHEN selector_value_1 THEN statement_2 ... ELSE else_statements END CASE; Code language: PostgreSQL SQL dialect and PL/pgSQL (pgsql) Let’s examine the syntax of the simple CASE statement in detail: 1) selector The selector is an...
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...
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 ...