Скачать или смотреть Solving the DBMS_SQL.PARSE Error in Dynamic PL/SQL Programming

Discover how to fix the "SQL command not properly ended" error in your dynamic PL/SQL programming when using `DBMS_SQL.PARSE`.
---
This video is based on the question https://stackoverflow.com/q/68925797/ asked by the user 'Cool_Oracle' ( https://stackoverflow.com/u/4017707/ ) and on the answer https://stackoverflow.com/a/69002207/ provided by the user 'Cool_Oracle' ( https://stackoverflow.com/u/4017707/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Dynamic PL-SQL programming - Issue with DBMS_SQL.PARSE

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Understanding and Resolving the DBMS_SQL.PARSE Error in Dynamic PL/SQL

When working with dynamic SQL in PL/SQL, developers may occasionally encounter errors that interrupt the execution of their code. One such common error is the ORA-00933: SQL command not properly ended error, particularly when trying to parse a SQL statement using the DBMS_SQL.PARSE function. In this guide, we'll dive into the root of this problem and explore a clear solution.

The Problem: Encountering the SQL Command Error

In the scenario presented, a user was attempting to construct a SQL statement dynamically. They faced the following errors when executing their code:

[[See Video to Reveal this Text or Code Snippet]]

This error indicates that the SQL command formed before the parsing attempt was not syntactically correct. The developer confidently reviewed their SQL syntax but was unable to identify the underlying issue.

Analyzing the Code

Let's examine the relevant part of the code that leads to the error:

[[See Video to Reveal this Text or Code Snippet]]

In the code snippet above, the SQL statement is constructed dynamically. However, the loop that appends conditions to the SQL string adds an OR at the end of the SQL query, which results in an incorrectly formatted SQL statement during parsing.

Solution: Correcting the SQL Statement

To resolve this issue, we need to remove the trailing OR that is appended to the SQL string. An effective method to achieve this is by using the RTRIM function to eliminate unwanted characters or substrings from the end of the assembled SQL string.

Step-by-Step Fix

Identify the Issue: Recognize that the generated SQL string ends with OR , causing the command to be improperly ended.

Modify the Construction of SQL String: Before parsing the SQL command, ensure that any extra OR is removed.

Here’s how you can implement the fix:

[[See Video to Reveal this Text or Code Snippet]]

Explanation of the Solution

Using RTRIM: The RTRIM function effectively removes the trailing OR , ensuring that the SQL statement is formed correctly before parsing it.

Ensuring Valid SQL Syntax: The corrected SQL string will meet syntax requirements, allowing for successful execution of the statement without throwing an error.

Conclusion

Dynamic SQL programming can be tricky, and it's essential to pay close attention to the construction of SQL commands. The ORA-00933 error is easily fixable with careful string manipulation. By removing unwanted characters at the end of SQL statements, developers can avoid execution interruptions and enhance the reliability of their dynamic SQL code.

If you find yourself debugging dynamic SQL issues in PL/SQL, remember to check for unexpected characters. Happy coding!