Cursor expressions (sometimes known as cursor subqueries) are an element of the SQL language and pre-Oracle9i were supported in SQL and by certain programming environments but not by PL/SQL. Oracle9i introduced
原因之一:查看在输出的字符串拼接中是否使用了(+),ORACLE中的字符拼接是(||),当然大家还可以使用CONCAT(),但是要注意使用CONCAT()函数最多只能拼接两个参数的字符 Example-Code: declare v_empno number(10); v_ename varchar2(50); v_job varchar2(50); cursor c_emp is select empno, ename, job from...
PLSQL_CODE_TYPE, rather than being one of several options inthe PLSQL_COMPILER_FLAGS parameter, which is now deprecated.The spnc_commands file, located in the ORACLE_HOME/plsqldirectory, contains the commands and options
Notice that the exception-handling code has determined the error as being the following: ORA-01722: invalid number Remember we encountered this at the very beginning of our acquaintance with the PL/SQL bug, way back in Example 3-1? Here in Figure 4-4, you see the code extracting the ...
PL/SQL Developer is now fully compliant with High-DPI screens such as 4K monitors and notebooks. All controls and images will scale with resolution (some Plug-Ins may still need to be enhanced). Click on the image below to enlarge this example of a 15″ 4K notebook (250% DPI): All ...
BOOLEAN表达式是PL/SQL语言中很常用的一种表达式类型,它用于比较两个条件,来确定其是否为真或假。 在PL/SQL中,BOOLEAN表达式可以用于条件判断或在循环语句中作为终止条件。其语法非常简单,只需要使用逻辑运算符对两个条件进行比较。PL/SQL支持的逻辑运算符有AND、OR和NOT三种,这些运算符可以将结果组合成更复杂的布尔...
下面是一个示例代码,演示如何使用regex消除PL/SQL中行尾的多余字符: 代码语言:txt 复制 import java.util.regex.*; public class RegexExample { public static void main(String[] args) { String plsqlCode = "SELECT * FROM table; "; // 创建正则表达式模式 ...
エラー・メッセージを取得するには、SQL%BULK_EXCEPTIONS(i).ERROR_CODEの負の値をエラー・レポート・ファンクションSQLERRMに渡します(負の値が必要)。 次のスクリプトはttIsqlを使用して実行されます。 -- create a temporary table for this example CREATE TABLE emp_temp AS SELECT * FROM...
(CASTファンクションの詳細は、『Oracle Database SQL言語リファレンス』を参照してください。) 次のように、Library_viewに対してINSTEAD OFトリガーを定義することによって、このビューを更新可能にします。 CREATE OR REPLACE TRIGGER Library_trigger INSTEAD OF INSERT ON Library_view FOR EACH ROW...
n_commission := 0.15; Code language: PostgreSQL SQL dialect and PL/pgSQL (pgsql) PL/SQL stops evaluating the subsequent condition once it finds the first condition that evaluates to TRUE. Therefore, in this example, PL/SQL will never evaluate the last two conditions in the CASE statement. ...