SQL语言分为:DDL数据定义语言,DML数据操纵语言,DCL是数据库控制语言,TC事务控制语言 *DDL数据定义语言(Data Definition Language):是SQL语言集中负责数据结构定义与数据库对象定义的语言,由CREATE、ALTER与DROP,RENAME,TRUNCATE几个语法所组成。 *DML数据操纵语言(Data Manipulation Language),用户通过它可以实现对数据库的...
Only create nested PL/SQL blocks (BEGIN/END pairs) within a procedure when there is specific exception handling you need to trap. Exception Handling For exception handling, use the following tips. Errors in Oracle Forms PL/SQL If a failure occurs in Oracle Forms PL/SQL and you want to stop...
Exception handling is done per pointer record, which means that if two or more pointer records are pointing to the same "original" data, any exceptions that are reported indicate the iteration number (pointer element number).This example uses the EMPLOYEES table to build a collection of ...
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 ...
access language. An advanced 4GL (fourth-generation programming language), PL/SQL offers seamless SQL access, tight integration with the Oracle server and tools, portability, security, and modern software engineering features such as data encapsulation, overloading, exception handling, and information ...
RAISE[ exception_name ]; 任何PL/SQL 块(包括匿名块、子程序和程序包)都可以有一个异常处理模块,用来处理一或多个异常。对于命名异常,可以编写一个特定的异常处理程序,而不是使用 OTHERS 异常来处理它。特定的异常处理程序比 OTHERS 异常处理程序更有效,因为后者还必须调用一个函数来确定它正在处理哪个异常。
13) Change Exception Handling as per the following - Oracle - EXCEPTION WHEN NO_DATA_FOUND THEN stmts..; MySQL - DECLARE CONTINUE HANDLER FOR NOT FOUND stmts..; -- Set a variable here like SET not_found =1 Check for the variable, to decide the error condition, when running the query....
To test the Exception Handling, right-click on HR_PACK in the navigator and select Run.15 . This time, change the P_INCREMENT value to 5 and click OK. 16 . In this case, an exception was raised with "Invalid increment amount" because the P_INCREMENT value was greater than 1.5. Su...
ORA-10054: trace UNDO handling in MLS ORA-10055: trace UNDO handing ORA-10056: dump analyze stats (kdg) ORA-10057: suppress file names in error messages ORA-10058: use table scan cost in tab$.spare1 ORA-10059: simulate error in logfile create/clear ...
21:10:29,048 ERROR [io.undertow.request] (default task-1) UT005023: Exception handling request to /jdbc-test/query: java.lang.RuntimeException: java.sql.SQLException: Non supported character set (add orai18n.jar in your classpath): JA16SJISTILDE ...