Constaint allows us to set specific rules for data in a table. For example; to make sure that the data in a column is …
Read More »NOT NULL Constraint in SQL Server(TSQL)
We can use “NOT NULL Constraint” to prevent values in a column from containing null data. Example: In the following example, when creating a …
Read More »What is Result Cache and How do I use it?
Result Cache is the memory space in the shared pool area within the Shared Global Area (SGA). In this memory area, the database query …
Read More »How To Connect To SQL Server From cmd command line
In some cases, SSMS (SQL Server Management Studio) is not installed on the server and you may need to connect to SQL Server from the …
Read More »Like Operator in SQL Server(TSQL)
We use the LIKE operator with WHERE clause. I suggest you read the following article about WHERE clause. “Where Clause in SQL Server and SQL …
Read More »How To List Availability Group Names, Database Names, IPs, Ports, DNS Names in SQL Server
If you are using SQL Server Availability Group and you have multiple availability groups and instances; if you want to list Availability Group Names, Database Names, …
Read More »What is dead.letter?
When you search for different files while working, you can see the file named dead.letter. Why does dead.letter occur? The cause of dead.letter is to …
Read More »How To Change TimeZone on PostgreSQL
If you notice that there is an error in the PostgreSQL time when you make time-dependent queries in PostgreSQL, you can change it by following …
Read More »How To Change TimeZone on Centos 7
If your Linux server does not match the local time, you may experience problems when making date-based configurations. You can make mistakes due to these …
Read More »How To Create NFS Share and Mount Shared Directory on a Client On Centos
NFS is the abbreviation of the Network File System. NFS is a useful technology for file sharing. It works as a server and client …
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