Useful tips for everyday
Should date fields be indexed? Is it a good idea to index datetime field in mysql? Yes, it can use it to do a range…
How do you do a cumulative count in SQL? How to Calculate the Cumulative Sum or Running Total in SQL… Using Sum () Function with…
What are linked servers? Linked servers enable the SQL Server Database Engine and Azure SQL Managed Instance to read data from the remote data sources…
What is SQL Indexing? A SQL index is used to retrieve data from a database very fast. Indexing a table or view is, without a…
How do you represent conditions in an ER diagram? Below points show how to go about creating an ER diagram. Identify all the entities in…
Is clustered index associated with table? Clustered Index. A clustered index defines the order in which data is physically stored in a table. Table data…
How does the create event statement in MySQL work? The previous statement creates an event named myevent. This event executes once—one hour following its creation—by…
What happens if there is no transaction log backup? Recall that only the Transaction Log backup, but NOT the database Full backup, will truncate the…
How to get column values in one comma separated value? MYSQL: To get column values as one comma separated value use GROUP_CONCAT () function as…
Why is mysql query so slow with many joins? Please see comments within the query. If it helps, this is using the WordPress DB schema.…