SQL

Let’s say you have a set of string values (such as values in a column) and you want to remove the last character. But, the string values are all different

Whenever an SQL query has been executed it usually returns the number of rows as well as a short message. Sometimes when working with multiple Stored Procedures, each having multiple

There are several Oracle functions that allow you to convert to a preset data type (TO_DATE, TO_CHAR, TO_NUMBER). There’s also a function that allows you to specify the data type.

If you ever want to add a number of months to a date in Oracle SQL, you can use the ADD_MONTHS function. It’s a simple function and takes two parameters???a

In Oracle, constraints can be set up to enforce business rules on a database. Sometimes you might want to remove constraints. To do this, use the ALTER TABLE command. ALTER

Did you know that SQL has built-in JSON functions? These can come in very handy! Instead of creating a very complicated query that exports XML and then translate it to

If you need to find the source code for a function or procedure in the database, it’s easy to do in Oracle. You can query the all_source view to get

You may not know this but you can have optional Parameters in SQL. It took me forever to figure it out. In any case, you can implement an optional parameter

In Oracle, you can use the ALTER TABLE command to add columns to a table after it’s created. The command also allows you to add multiple columns in the one