在本章中,无涯教程将讨论PL/SQL中的异常,异常是程序执行期间的错误条件, PL/SQL支持程序员使用程序中的 EXCEPTION 块捕获此类条件,并针对错误条件采取适当的措施。有两种类型的异常- System-defined 异常 User-defined 异常 异常处理语法 异常处理的一般语法如下,在这里,您可以列出尽可能多的异常,默认异常将使用 当...
PL/SQL Raise ExceptionsSummary: in this tutorial, you will learn how to use the PL/SQL RAISE statement to raise a user-defined exception, an internally defined exception, and re-raising an exception. To raise an exception explicitly, you use the RAISE statement. The RAISE statement allows you...
FOR i IN 1..v_emp_tab.COUNT LOOP v_emp_tab(i) := c_emp_data.nextval; END LOOP; FORALL i IN 1..v_emp_tab.COUNT INSERT INTO employees VALUES v_emp_tab(i); -- 检查是否有错误发生 FOR i IN 1..SQL%bulk_exceptions.COUNT LOOP DBMS_OUTPUT.PUT_LINE('Error Index: ' || SQL%bulk...
Oracle 异常模型在异常引发和异常处理方面都不同于 SQL Server。 最好使用 SQL Server 异常模型作为 Oracle PL/SQL 代码迁移的一部分。 每当FORALL 与子句一起使用 SAVE EXCEPTIONS 的语句时,SSMA 都不支持它并生成错误消息。 示例 在以下示例中,使用包含SAVE EXCEPTIONS子句的FORALL语句。 SQL 复制 CREATE TABLE...
What is a named system exception inOracle?Named systemexceptionsareexceptionsthat have been given names by PL/SQL. They are named in the STANDARD package in PL/SQL and do not need to be defined b named exception oracle exception predefined exceptio ...
TheSqlConnectionremains open when the severity level is 19 or less. When the severity level is 20 or greater, the server usually closes theSqlConnection. However, the user can reopen the connection and continue. In both cases, aSqlExceptionis generated by the method executing the command. ...
The exception that is thrown when setting a value into aSystem.Data.SqlTypesstructure would truncate that value. See Also Tasks How to: Use the Exception Assistant Concepts SqlTypes and the DataSet (ADO.NET) Reference SqlTruncateException
This example illustrates how to use the functionSQLERRMin an exception handler: DECLAREl_msg VARCHAR2(255); r_customer customers%rowtype;BEGINSELECT*INTOr_customerFROMcustomers;EXCEPTIONWHENOTHERSTHENl_msg :=SQLERRM; dbms_output.put_line(l_msg);END; /Code language:PostgreSQL SQL dialect and PL/...
Exception nameSQLStateRedwood error codeDescription value_error22000-6502The exception occurs when the conversion of a character string to a number fails. invalid_number22000-6502The exception is raised in PL statement when the conversion of a character string to num...
filter(pl.col("Age") == 23.0).collect().to_dicts() Here's the file: part-00001-0618c014-7d83-4ef9-9eb2-281f3ed1da89-c000.zstd.zip Log output Traceback (most recent call last): File "deltalake2db\repo.py", line 5, in <module> ).filter(pl.col("Age") == 23.0).collect...