Find the Associations Between Database Mail Accounts and Database Principals in SQL Server (T-SQL)

In SQL Server, you can use the sysmail_help_principalprofile_sp stored procedure on the msdb database to retrieve a list of all associations between Database Mail accounts and database principals.

You can also return account info based on the principal name/ID or the profile name/ID.

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3 Ways to use ALL in SQL Server

You might be familiar with the ALL option in SQL Server. Perhaps you’ve used it along with the UNION operator to include any duplicates that might be returned in the result set.

But did you know that ALL can also be used in two other contexts?

ALL can be used in the following three contexts:

  • As an argument to the SELECT clause.
  • As an argument to the UNION clause.
  • As a logical operator when comparing a scalar value with a single-column set of values.

Examples of each of these contexts follows.

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SQL Server ALL Operator Explained

In SQL Server, the ALL operator can be used with a subquery to compare a scalar value with a single-column set of values returned by the subquery.

It’s also true that the SELECT clause and UNION operator both accept an ALL argument, although this usage has a different purpose (allows duplicates in the result set).

Below are examples of using the ALL operator with a subquery.

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What is a Comparison Operator?

Comparison operators are an important part of most programming languages.

Comparison operators are used to compare two expressions. The result is either true or false. It could also be unknown. This could also be represented by either 1, 0, or NULL, depending on the language. These are typically known as “Boolean expressions”.

When used with databases, comparison operators can be used inside your SQL queries to filter data to a certain criteria.

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How to Find a Database’s ANSI_NULLS Setting in SQL Server (T-SQL)

SQL Server has an ANSI_NULLS setting that determines how NULL values are evaluated when compared to another value with the Equals (=) and Not Equal To (<>) comparison operators.

While it’s true that you can change the ANSI_NULLS setting at the session level (using SET ANSI_NULLS), each database also has its own ANSI_NULLS setting.

You can check your database to see whether its ANSI_NULLS setting is ON or OFF.

To do this with T-SQL, you can either use the sys.databases catalog view or the DATABASEPROPERTYEX() function.

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