Joins are used to extract information from more than one table based on the related column/columns means you can retrieve data from two or more tables based on logical relationships between the tables. Continue reading “Join in SQL Server”
Category: SQL Server Tutorial
Microsoft SQL Server Tutorials For Beginners, free microsoft sql server tutorial, Authorcode SQL Server tutorial covers the basic concepts of the SQL server with the examples. You can learn the SQL server basic and advanced techniques and how to use sql queries from this tutorial.
Improve SQL Server Performance
We are going to discuss some points that help improve database performance. Always try keep this point in mind before creating new database or writing query or procedures. Continue reading “Improve SQL Server Performance”
Steps to create and run SQL stored procedure in C#.
In this article i will explain you how we can create a stored procedure for inserting, deleting and updating records in the table. and how we can execute that stored procedure using C# language. Continue reading “Steps to create and run SQL stored procedure in C#.”
UPDATE Statement in SQL Server
Update statement is different from INSERT and DELETE statements.UPDATE statements is used for updating a single records to multiple records. UPDATE statements use a WHERE clause, same as SELECT statement. Continue reading “UPDATE Statement in SQL Server”
Using IN in SQL Server
IN operator we use when we Determines whether a specified value matches any value in a sub query or a list. The IN operator allows you to specify multiple values in a WHERE clause.it also helps reduce the need to use multiple OR conditions. Continue reading “Using IN in SQL Server”
DATEPART() function in SQL Server
DATEPART() function returns a value equal to the part of a specified date.
where date is the valid date or a string in date format
and datepart can be one of the following:
Suppose you have a table ‘tbl_employee’
The following query return the date of joining of the Ankur:
SELECT datepart("year", DateOfJoin)
Output will be:
Now if you want to current year, you can use the following query:
GETDATE() function return the current date.
DATEDIFF() function in SQL Server
DATEDIFF() function is very useful when we are working with date operations. DATEDIFF function return the difference between date items in days, weeks, minutes, years and hours. It can also used with WHERE clause. Continue reading “DATEDIFF() function in SQL Server”
STR(), CHAR(), and ASCII() function in SQL Server
In Sql Server STR() function converts a numeric value to character data. STR() function allows us to specify the total length and number of decimal places to be included when it is converted to character data. Continue reading “STR(), CHAR(), and ASCII() function in SQL Server”
DATALENGTH() AND COL_LENGTH() in SQL Server
DATALENGTH function returns the number of bytes used to represent any expression. DATALENGTH is especially very useful with varchar, varbinary, text, image, nvarchar, and ntext data types because these data types can store variable-length data. Continue reading “DATALENGTH() AND COL_LENGTH() in SQL Server”
ISNULL in SQL Server
ISNULL function replaces NULL values with the specified replacement value. you can use ISNULL as Continue reading “ISNULL in SQL Server”