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SQL Tutorial

This website provides a SQL Tutorial, SSRS, Power BI, Python, Azure basics and advanced tutorials for beginners and professionals

You will find out a step-by-step walk through of the basics and advanced topics with practical and include numerous hands-on activities.

SQL Server STRING_AGG Function

SQL Server STRING_AGG() Function is string function which concatenates values for any given string expressions and separate them a specified separator.

It does not add the separator at the end of the result string.

String expression values are implicitly converted to string types and then concatenated.

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SQL Server Lead Function

SQL Server LEAD() function is a Analytics function that provides access to a row at a specified physical offset which follows the current row.

Basically, LEAD() function provides access to a row at a given physical offset that follows the current row.

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SQL SERVER @@IDENTITY

SQL Server @@IDENTITY function is a system function that is used to get the last IDENTITY value generated for any table with an identity column under the current session, regardless of the scope of the T-SQL statement that generated the value.

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