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 ...
如何使用 Oracle Case Statement 测试不等式问题描述 投票:0回答:3这很好用: select case (1+2) -- (or_some_more_complicated_formula_yielding_a_numeric_result) when 200 then '200' when 100 then '100' else 'other' end hi_med_low from dual ; 但我需要做更多这样的事情: select case (1+...
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 matched, the...
2 SQL select case when clause 97 CASE .. WHEN expression in Oracle SQL 0 Oracle SQL Use of Case When 0 Oracle - Case Statement 0 Using Case When Clause in Where Clause 0 SQL "case when" query 0 case when then IN 1 Conditionally use CASE...WHEN - Oracle SQL 0 how can...
2 SQL Case statement throwing missing keyword error 0 Oracle. Missing keyword when using case statement. Error 00905 0 "ORA-00905: missing keyword" for case statement 0 Oracle SQL CASE gives error 1 ORA-00905: Missing keyword in CASE expression 0 ORA-00905: missing keyword in case st...
After each stage of execution, the cursor retains enough information about the SQL statement to re-execute the statement without starting over, as long as no other SQL statement has been associated with that cursor. This is illustrated in Figure 7-1. Notice that the statement can be re-...
to the extent of whitespace and upper/lower case identity, and the types of the bind variables must match.) When the current statement is matched, the stored derived information (parse tree, execution plan, etc) is reused and computational cost is saved.Cursor reuse in PL/SQL static SQL ...
Adding PartitionsTo add a partition to the base table, use theALTERTABLESQL statement. When you add a partition to an indexed table, Oracle Text automatically creates the metadata for the new index partition. The new index partition has the same name as the new table partition. If you must...
SQL语句编写规则 大小写不敏感。 语句可以占用一行或者多行。 关键字不能被省略,或者拆分成多行。 通常情况子句独占一行。 使用缩进增加语句的可读性。 在sqlplus或者其他工具中,每个语句结束需要加上一个分号。告诉客户端,你的语句结束了。 算术运算符
Given below are the examples mentioned: It can be used with both DQL and DML statements in Oracle which means we can use it with SELECT, INSERT, UPDATE and DELETE statements. Example #1 EXISTS WITH SELECT STATEMENT. In this case, we are going to see how we can use EXISTS with SELECT ...