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Solving “Data Not Found” Error In Oracle PL-SQL Problem

Sometimes your computer may display an error code saying data not found in oracle pl sql. There can be several reasons for this problem.

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    because no data was found from the objects. ORA-01403 is the most common error. ORA-01403 comes up, as well as a “SELECT INTO clause” which is meant to retrieve a record from a database in one go and assign it to plsql variables. When a SELECT INTO statement fails to get a record between a database.

    :

    Conclusion: In this tutorial, the user will learn about PL/SQL exceptions and write how an exception handler handles exceptions.

    Introduction To PL/SQL Exceptions

    no data found error in oracle pl sql

    PL/SQL remembers errors, all occurring in a block, procedure, or anonymous function, when those exceptions are caught. Exceptions can have various reasons, for example. Encoding error, player error even or hardware error.

    How do I fix No data found error in Oracle?

    to recreate tables from the original control database itself. The good news is that the -ora 01403 error is easily preventable. By creating the rightswitch, the computer program should now run without errors and, sooner or later, change again.

    It’s impossible to anticipate all potential exceptions, given that you can write code to handle exceptions just to keep the program running normally. Code that

    What you write for exception handling is often called exception handling.PL/SQL

    A ban can have an exception handling section, one or more exception handlers are required.

    start ... AN EXCEPTION E1 if TO IF e2 THEN IF OTHERS THEN END;

    Code language: SQL query (structuredth language) (sql)

    If an exception occurs in the executable section, the execution of the current section is stopped, the block is executed, and control is transferred to the exception handling section.

    If e1 occurs, fire exception_handler1. occurs When an exception is e2, exception_handler2 is executed. If several others throw exceptions, then our own other_exception_handler is launched.

    After executing exception handler a, the handler moves on to the next statement bound by the enclosing block. If there is almost no enclosing block, processing returns to the calling if statement, indicating that the exception handler is in a subroutine or environment on a particular host (SQL Developer or SQL*Plus), the if exception handler is often in an anonymous block.

    If an exception occurs but no exception handler exists, we will discuss the resulting exception in the guide on propagating unhandled exceptions.Exceptions

    PL/SQL Examples

    PL/SQL NO_DATA_FOUND Another Next Example

    The block accepts a trusted ID th client as input and returns the client:



    EXPLAIN l_name of clients.NAME%TYPE; L_Customer_ID Customer.Customer_ID%TYP := &Customer_ID;BEGIN SELECT name INTO l_name clients WHERE = customer_id customer_id; dbms_output. put_line('Client name ' || l_name); END;/

    Code language: SQL (Structured Query Language) (sql)

    If you block and enter the buyer ID as null, Oracle will encounter the following error:

    How do you handle no data found in SQL query?

    If you select INTO for one variable and no files are returned, you will get a NO DATA FOUND error. I believe the correct way to write the previously mentioned code is to wrap some SELECT statements in their own BEGIN/EXCEPTION/END block.

    ORA-01403: no reports found

    Code language: SQL (Structured Query Language) (sql)

    Note that the next line is not executed at all because the dominance propagated the exception with the section.


    How do you handle no data found exception in PLSQL?

    Answer: To prevent PLSQL from running the promotional exception code when a record is not received, you must first perform a quantification to determine the number of records returned. Example: for -- this Check the box to ensure that at least one record is considered returned. SELECT COUNT(1) INTO FROM v_count sales. That's right, this



    dbms_output. put_line('client name' - || l_name);

    Code language: SQL (Structured Query Language) (sql)

    To provide a more descriptive message, buyers may want to add an exception handling section for the following reasons:

    EXPLAIN l_name of clients.NAME%TYPE; L_Customer_ID Customer.Customer_ID%TYP := &Customer_ID;BEGIN SELECT IN NAME l_nameclients WHERE client_id equals L_client_id; in Dbms_output .put_line('client name ' || l_name); AN EXCEPTION IF THEN no_data_found dbms_output.put_line('Client || ' l_id_client || ' does not exist');END;/

    Code language: SQL (Structured Query Language) (sql)

    If you run this block of code and then enter customer number 0, you will get the following message:

    no data found error in oracle pl sql

    Client 4 does not exist

    Code language: SQL (Structured Query Language) (sql)

    PL/SQL TOO_MANY_ROWS Another Example

    First, change the block of code from the example above as follows, in addition to executing:



    EXPLAIN l_name client. name%type; l_customer_id customer.customer_id%TYP := &customer_id;BEGIN CHOOSE nickname INTO l_name clients WHERE client_id <= client_id; dbms_output. put_line('client name a || l_name); AN EXCEPTION IF NO_DATA_FOUND then dbms_output.put_line('Customer has || l_customer_id || 'exists and never');END;/

    The language is code: SQL (Structured Query Language) (sql)

    Second, enter client id ten and you will get the following error:

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  • ORA-01422: exact fetchreturns more to reach the number of requested rows

    Code language: SQL (Structured Query Language) (sql)

    There are many more TOO_MANY_ROWS exceptions here that are not necessarily fully handled by code.aria-scribeby="shcb-language-9">

    < code>EXPLAIN

     client_id l_client_id;            dbms_output.put_line('client name becomes ' || l_name);    AN EXCEPTION        NO_DATA_FOUND if THEN            dbms_output.put_line('Client id || client_id || does not exist');       IF TOO_MANY_ROWS THEN            dbms_output.put_line('Database returns more than one data from client');END;/

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