In SQL, MERGE is the latest statement. You can include all UPDATE, INSERT and DELETE statement in single query. Major RDBMS databases support this statement.
Category: SQL
Here are the top differences between named PLSQL and unnamed PLSQL and their usages.
Here are Srinimf’s top blog posts. These are popular for the year 2021.
Here is a sample sub-query. Here you will read records from two tables. Also explained how the query works.
Here are steps of how to create a procedure in SQL developer and how to call it.
Here’s a sample Explain plan query to find statistics of the execution plan. Useful for SQL and Data warehousing developers.
Check and Default constraints are both not the same. They create during create Table. Differences between these you can understand with these examples.
Here are top interview questions associated to SQL tables
You can modify Table data with thse SQL queries. Those are Insert, Update, Delete and Merge.
How to choose index columns for a Table. It is tricky. These are ideas to choose correctly.
These SQL queries are helpful to get the current Date and Time. Also, you can use it to get DATE duration.
Here is a SQL subquery example to update a Table. It’s the neat way when you have data to fetch from two tables.
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