2. Case Statement 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 mo...
The coalesce statement is a bit like the Oracle NVL function. Given an unlimited number of arguments, it will return the first non-null value in those arguments. Here is an example: SELECT ename, COALESCE(comm, 0) COMM FROM emp; ENAME COMM --- --- SMITH 0 ALLEN 300 WARD 500 JONES ...
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...
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...
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 ...
在数据库操作中,NULL值的处理是一个常见而又重要的任务。NULL在数据库中代表缺失或未知的数据,因此在查询、计算和逻辑判断时,它可能会带来一些意想不到的结果。...Oracle数据库提供了多种方法来处理NULL值,其中COALESCE函数是一个强大且优雅的工具。COALESCE函数用于返
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 thewh...
Fields inherited from interface oracle.javatools.db.sql.SQLFragment CONNECTBY, FROM, GROUPBY, HAVING, MODEL, NOCYCLE, ORDERBY, ORDERSIBLINGSBY, PRIOR, SELECT, STARTWITH, TYPE, WHEREFields inherited from interface oracle.javatools.db.DBObject COMMENTConstructor Summary CaseStatement.WhenThen() Case...
"String or binary data would be truncated.\r\nThe statement has been terminated." "String or binary data would be truncated" and field specifications “Unable to enlist in the transaction” with Oracle linked server from MS SQL Server [<Name of Missing Index, sysname,>] in non clustered in...
Oracle Spatial and Graph - Version 11.2.0.3 and later: ORA-06592: CASE Not Found While Executing CASE Statement When Running SEM_MATCH Query