Useful tips for everyday
How do you update a column as primary key in SQL? To modify a primary key Open the Table Designer for the table whose primary…
Is join better than union? UNION in SQL is used to combine the result-set of two or more SELECT statements. The data combined using UNION…
What does it mean to select a data range? A range is a group or block of cells in a worksheet that are selected or…
What are the disadvantages of table partitioning? Check if you can add memory to server, RAM is cheap. Smaller tables, smaller indexes, lower query latency.…
Which queries are used to retrieve data from Cube? There is a special type of MDX queries which can be used to retrieve data from…
How disconnect all users from SQL database? There are two ways of doing it: Right click on the database in Object Explorer go to Tasks…
How do you defrag a table? How to Optimize MySQL Tables and Defragment to Recover Space Identify Tables for Optimization. The first step is to…
How do I sort by id in SQL? The ORDER BY statement in sql is used to sort the fetched data in either ascending or…
Which is logins are migrated in SQL Server? Which logins are migrated. You can migrate the logins based on a Windows principal (such as a…
How to import PostgreSQL data into Amazon RDS? To import PostgreSQL data into a DB instance, follow the information in the Importing data into PostgreSQL…