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 ...
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 ...
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 ...
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...
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...
[ 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...
Simple CASE expressions use expressions to determine the returned value and have the following syntax: CASE search_expression WHEN expression1 THEN result1 WHEN expression2 THEN result2 ... WHEN expressionN THEN resultN ELSE default_result
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 expression that is evaluated once. The result of the selector is used to select one of the ...
CASEexpressions allow conditional processing in EQL, allowing you to make decisions at query time. The syntax of theCASEexpression, which conforms to the SQL standard, is: CASE WHEN <Boolean-expression> THEN <expression> [WHEN <Boolean-expression> THEN <expression>]* ...
Oracle/ Oracle Database/ Release 21 SQL Language Reference CASEexpressions let you useIF...THEN...ELSElogic in SQL statements without having to invoke procedures. The syntax is: Description of the illustration case_expression.eps simple_case_expression::= ...