Pl Sql Loop Continue On Error
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here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with pl sql continue after exception us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack oracle continue Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up continue statement in oracle 10g Is it possible to CONTINUE a loop from an exception? up vote 13 down vote favorite 4 I have a fetch being executed inside of a loop. If this fetch fails (no data) I would like to CONTINUE the loop to oracle exception handling in loop the next record from within the EXCEPTION. Is this possible? I'm getting a ORA-06550 & PLS-00201 identifer CONTINUE must be declared DECLARE v_attr char(88); CURSOR SELECT_USERS IS SELECT id FROM USER_TABLE WHERE USERTYPE = 'X'; BEGIN FOR user_rec IN SELECT_USERS LOOP BEGIN SELECT attr INTO v_attr FROM ATTRIBUTE_TABLE WHERE user_id = user_rec.id; EXCEPTION WHEN NO_DATA_FOUND THEN -- user does not have attribute, continue loop to next record. CONTINUE; END; END LOOP; END; oracle plsql share|improve this question edited May 5 '11 at 20:33 asked
Continue In Oracle With Example
May 5 '11 at 19:23 ProfessionalAmateur 1,83972349 The CONTINUE statement is a new feature in 11g. Are you sure you are running that version? –angus May 5 '11 at 20:08 By the way, see here: stackoverflow.com/questions/177752/… –angus May 5 '11 at 20:09 @angus - We are on 10g, bummer. Guess I'll just use a NULL; and a bunch of conditional IF statements to help with the loop. Post your answer as a reply and I'll mark it as the correct answer. –ProfessionalAmateur May 5 '11 at 20:16 Done, thanks. Look at that other question, maybe you can just use GOTO. –angus May 5 '11 at 20:21 2 A simpler solution would be to loop through a query that joins the two tables - then you wouldn't have to handle any exceptions. –Adam Musch May 6 '11 at 5:27 add a comment| 3 Answers 3 active oldest votes up vote 11 down vote accepted The CONTINUE statement is a new feature in 11g. Here is a related question: 'CONTINUE' keyword in Oracle 10g PL/SQL share|improve this answer answered May 5 '11 at 20:20 angus 1,83111020 add a comment| up vote 9 down vote In the construct you have provided, you don't need a CONTINUE. Once the exception is handled, the statement after the END is performed, assuming your EXCEPTION block doesn't terminate the procedure. In other words, it will continue on to the next iteration of the user_rec loop. You also nee
program to continue to operate in the presence of errors. Topics: Overview of PL/SQL Run-Time Error Handling Guidelines for Avoiding and Handling PL/SQL Errors and Exceptions Advantages of PL/SQL Exceptions Predefined PL/SQL Exceptions
Pl Sql Continue Cursor Loop
Defining Your Own PL/SQL Exceptions How PL/SQL Exceptions Are Raised How PL/SQL Exceptions Propagate pl sql exception handling examples Reraising a PL/SQL Exception Handling Raised PL/SQL Exceptions Overview of PL/SQL Compile-Time Warnings Overview of PL/SQL Run-Time Error Handling In PL/SQL, pls-00201: identifier 'continue' must be declared an error condition is called an exception. An exception can be either internally defined (by the run-time system) or user-defined. Examples of internally defined exceptions are ORA-22056 (value string is divided by zero) and http://stackoverflow.com/questions/5903027/is-it-possible-to-continue-a-loop-from-an-exception ORA-27102 (out of memory). Some common internal exceptions have predefined names, such as ZERO_DIVIDE and STORAGE_ERROR. The other internal exceptions can be given names. You can define your own exceptions in the declarative part of any PL/SQL block, subprogram, or package. For example, you might define an exception named insufficient_funds to flag overdrawn bank accounts. User-defined exceptions must be given names. When an error occurs, an exception is https://docs.oracle.com/cd/B28359_01/appdev.111/b28370/errors.htm raised. That is, normal execution stops and control transfers to the exception-handling part of your PL/SQL block or subprogram. Internal exceptions are raised implicitly (automatically) by the run-time system. User-defined exceptions must be raised explicitly by RAISE statements or invocations of the procedure DBMS_STANDARD.RAISE_APPLICATION_ERROR. To handle raised exceptions, you write separate routines called exception handlers. After an exception handler runs, the current block stops executing and the enclosing block resumes with the next statement. If there is no enclosing block, control returns to the host environment. For information about managing errors when using BULK COLLECT, see Handling FORALL Exceptions (%BULK_EXCEPTIONS Attribute). Example 11-1 calculates a price-to-earnings ratio for a company. If the company has zero earnings, the division operation raises the predefined exception ZERO_DIVIDE, the execution of the block is interrupted, and control is transferred to the exception handlers. The optional OTHERS handler catches all exceptions that the block does not name specifically. Example 11-1 Run-Time Error Handling DECLARE stock_price NUMBER := 9.73; net_earnings NUMBER := 0; pe_ratio NUMBER; BEGIN -- Calculation might cause division-by-zero error. pe_ratio := stock_price / net_earnings; DBMS_OUTPUT.PUT_LINE('Price/earnings ratio = ' || pe_ratio); EXCEPTION -- exception handlers begin -- Only one of the WHEN blocks is executed. WHEN ZERO_DIVIDE
to your PL/SQL program. With many programming languages, unless you disable error checking, a run-time error such as stack overflow or division by zero stops normal processing and returns control to the https://docs.oracle.com/cd/B19306_01/appdev.102/b14261/errors.htm operating system. With PL/SQL, a mechanism called exception handling lets you bulletproof your program https://docs.oracle.com/cd/B28359_01/appdev.111/b28370/controlstructures.htm so that it can continue operating in the presence of errors. This chapter contains these topics: Overview of PL/SQL Runtime Error Handling Advantages of PL/SQL Exceptions Summary of Predefined PL/SQL Exceptions Defining Your Own PL/SQL Exceptions How PL/SQL Exceptions Are Raised How PL/SQL Exceptions Propagate Reraising a PL/SQL Exception Handling Raised PL/SQL Exceptions pl sql Overview of PL/SQL Compile-Time Warnings Overview of PL/SQL Runtime Error Handling In PL/SQL, an error condition is called an exception. Exceptions can be internally defined (by the runtime system) or user defined. Examples of internally defined exceptions include division by zero and out of memory. Some common internal exceptions have predefined names, such as ZERO_DIVIDE and STORAGE_ERROR. The other internal exceptions can be given names. You can define pl sql continue exceptions of your own in the declarative part of any PL/SQL block, subprogram, or package. For example, you might define an exception named insufficient_funds to flag overdrawn bank accounts. Unlike internal exceptions, user-defined exceptions must be given names. When an error occurs, an exception is raised. That is, normal execution stops and control transfers to the exception-handling part of your PL/SQL block or subprogram. Internal exceptions are raised implicitly (automatically) by the run-time system. User-defined exceptions must be raised explicitly by RAISE statements, which can also raise predefined exceptions. To handle raised exceptions, you write separate routines called exception handlers. After an exception handler runs, the current block stops executing and the enclosing block resumes with the next statement. If there is no enclosing block, control returns to the host environment. For information on managing errors when using BULK COLLECT, see "Handling FORALL Exceptions with the %BULK_EXCEPTIONS Attribute". Example 10-1 calculates a price-to-earnings ratio for a company. If the company has zero earnings, the division operation raises the predefined exception ZERO_DIVIDE, the execution of the block is interrupted, and control is transferred to the exception handlers. The optional OTHERS handler catches all exceptions that the block does not name specif
of PL/SQL Control Structures Testing Conditions (IF and CASE Statements) Controlling Loop Iterations (LOOP, EXIT, and CONTINUE Statements) Sequential Control (GOTO and NULL Statements) Overview of PL/SQL Control Structures Procedural computer programs use the basic control structures shown in Figure 4-1. Figure 4-1 Control Structures Description of "Figure 4-1 Control Structures" The selection structure tests a condition, then executes one sequence of statements instead of another, depending on whether the condition is true or false. A condition is any variable or expression that returns a BOOLEAN value. The iteration structure executes a sequence of statements repeatedly as long as a condition holds true. The sequence structure simply executes a sequence of statements in the order in which they occur. Testing Conditions (IF and CASE Statements) The IF statement executes a sequence of statements depending on the value of a condition. There are three forms of IF statements: IF-THEN, IF-THEN-ELSE, and IF-THEN-ELSIF. For a description of the syntax of the IF statement, see IF Statement. The CASE statement is a compact way to evaluate a single condition and choose between many alternative actions. It makes sense to use CASE when there are three or more alternatives to choose from. For a description of the syntax of the CASE statement, see CASE Statement. Topics: Using the IF-THEN Statement Using the IF-THEN-ELSE Statement Using the IF-THEN-ELSIF Statement Using the Simple CASE Statement Using the Searched CASE Statement Guidelines for IF and CASE Statements Using the IF-THEN Statement The simplest form of IF statement associates a condition with a sequence of statements enclosed by the keywords THEN and END IF (not ENDIF) as illustrated in Example 4-1. The sequence of statements is executed only if the condition is TRUE. If the condition is FALSE or NULL, the IF statement does nothing. In either case, control passes to the next statement. Example 4-1 Simple IF-THEN Statement SQL> DECLARE 2 sales NUMBER(8,2) := 10100; 3 quota NUMBER(8,2) := 10000; 4 bonus NUMBER(6,2); 5 emp_id NUMBER(6) := 120; 6 BEGIN 7 IF sales > (quota + 200) THEN 8 bonus := (sales - quota)/4; 9 10 UPDATE employees SET salary = 11 salary + bonus 12 WHERE employee_id = emp_id; 13 END IF; 14 END; 15 / PL/SQL procedure successfully completed. SQL> Using the IF-THEN-ELSE Statement The