How to generate, parse and use JSON data
In this article, I will explain how easily you can generate, parse and use JSON data in the Oracle database. I used Oracle 19c for all examples in […]
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Useful Oracle Functions
How to find the difference between two dates If you want to find the difference between two dates according to different time types, you can use the EXTRACT […]
More DetailsORA-30926 unable to get a stable set of rows in the source tables
In this post, I am going to talk about ORA-30926 error and how to solve it. Let’s create the following tables for our example. This error occurs due […]
More DetailsHow to split comma separated string into rows
In rare cases we might need to convert string data into rows. So, you can simply do this using the code below. If your string is not comma […]
More DetailsAdaptive Cursor Sharing & Histograms
Adaptive cursor sharing has been used in Oracle 11g first. This feature enables a single statement that contains bind variables to use multiple execution plans. According to the […]
More DetailsAnalytic functions & Windowing clause
Analytic functions have been used from the early versions of Oracle. It is used in many tasks, especially reporting. In this article, I am going to use EMP […]
More DetailsSUBSTR vs DBMS_LOB.SUBSTR
We have to choose the right built-in function when developing pl/sql applications. The following test case shows the performance outcome between SUBSTR and DBMS_LOB.SUBSTR functions. This test was […]
More DetailsPivot and Unpivot Operators in Oracle 11g
PIVOT In this article you will learn how to use PIVOT and UNPIVOT operators. Basically, pivot operator allow you to transpose rows into columns. Prior to 11g, it […]
More DetailsORA-22859 invalid modification of columns
When you try to convert datatype CLOB to VARCHAR2, you get the ORA-22859 invalid modification of columns error even if the column is empty. In order to overcome […]
More DetailsParallel Enabled Pipelined Table Functions
In the previous article, I mentioned about pipelined table functions. In this article, I am going to talk about parallel feature of pipelined table functions. At least one […]
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