Db2 Raise Application Error
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Oracle Toad for MySQL Toad for SQL Server Toad for SAP Solutions Toad MAC raise application error in sql server Edition Home » Platforms » IBM DB2 » IBM DB2 Wiki » Raising Errors with SIGNAL Raising Errors with SIGNAL raise application error syntax IBM DB2 Community Join Overview Blog Wiki Members Contents IBM DB2 Wiki IBM DB2 - Wiki IBM DB2 LUW IBM DB2 LUW Configuration Parameters IBM DB2 LUW Object Management Aliases - IBM DB2 LUW http://www.ibm.com/support/knowledgecenter/SSEPEK_10.0.0/sqlref/src/tpc/db2z_bif_raiseerror.html Bufferpools - IBM DB2 LUW Data Types - IBM DB2 LUW Declared Global Temporary Tables (DGTT) Event Monitors - IBM DB2 LUW Indexes - IBM DB2 LUW Materialized Query Tables (MQTs) Multidimensional Clustering (MDC) Tables Nicknames Object Management Tools Packages Schemas Sequences Stored Procedures Tables Tablespaces Triggers Constraints and Triggers Creating and Editing Triggers INSTEAD OF Triggers SET, VALUES and CASE Transition Variables Trigger Activation Trigger Definition Trigger Examples Changing https://www.toadworld.com/platforms/ibmdb2/w/wiki/7484.raising-errors-with-signal Inserted Values Dealing With Sets Raising Errors with SIGNAL Updating Other Tables Trigger Usage Notes Triggers (Overview) Viewing Trigger Information User Defined Functions (UDFs) Views Wrappers IBM DB2 LUW System Catalog Views IBM DB2 LUW System Management IBM DB2 Z/OS SQL Development SQL Procedural Language (SQL PL) Tweet Article History Raising Errors with SIGNAL Using the Signal Statement to Raise Errors In the event that something abnormal happens during the processing of your trigger, you may want to use the SIGNAL command to alert the application to the problem. The SIGNAL command has the following formats: SIGNAL SQLSTATE value | variable SET MESSAGE_TEXT='string' | variable; SIGNAL condition SET MESSAGE_TEXT='...' | variable The first form of the SIGNAL command requires that you know the SQLSTATE that you want to raise. For instance, SQLSTATE '02000' indicates that no records were found. The SET MESSAGE_TEXT keyword allows you to return diagnostic information back to the calling application so that additional error handling can be done. In other cases, the user may want to set up specific error codes that they want to use to signify errors that are generated by the trigger, and not the SQL code itself. For these types of error codes, users should consider using S
+ Share This Page 1 of 6 Next > This chapter is from the book This chapter is from the book DB2 Developer's Guide, 5th Edition Learn More Buy This chapter is from the book This chapter is from http://www.informit.com/articles/article.aspx?p=174097&seqNum=3 the book DB2 Developer's Guide, 5th Edition Learn More Buy Chapter 3: Using DB2 Functions In this Chapter Column Functions Scalar Functions The RAISE_ERROR Function MQSeries Built-in Functions XML Publishing Built-in Functions Built-in Function Guidelines Two types of built-in functions can be applied to data in a DB2 table using SQL: column functions and scalar functions. You can use these functions to further simplify the requirements of complex data access. raise application NOTE DB2 also provides the capability for users to create their own functions. This capability, called user-defined functions, is discussed in-depth in Chapter 4, "Using DB2 User-Defined Functions and Data Types." Functions are called by specifying the function name and any required operands. A built-in function can be used any place an expression can be used (with some exceptions). Column Functions Column functions compute, from a group of rows, a raise application error single value for a designated column or expression. This provides the capability to aggregate data, thereby enabling you to perform statistical calculations across many rows with one SQL statement. To fully appreciate the column functions, you must understand SQL's set-level processing capabilities. This list shows some rules for the column functions: Column functions can be executed only in SELECT statements. A column function must be specified for an explicitly named column or expression. Each column function returns only one value for the set of selected rows. If you apply a column function to one column in a SELECT statement, you must apply column functions to any other columns specified in the same SELECT statement, unless you also use the GROUP BY clause. Use GROUP BY to apply a column function to a group of named columns. Any other column named in the SELECT statement must be operated on by a column function. The result of any column function (except the COUNT and COUNT_BIG functions) will have the same data type as the column to which it was applied. The COUNT function returns an integer number; COUNT_BIG returns a decimal number. The result of any column function (except the COUNT and COUNT_BIG functions) can be null. COUNT and COUNT_BIG always