How do I add an if else condition in SQL select query?

How do I add an if else condition in SQL select query?

You can have two choices for this to actually implement:

1. Using IIF, which got introduced from SQL Server 2012: SELECT IIF ( (Obsolete = ‘N’ OR InStock = ‘Y’), 1, 0) AS Saleable, * FROM Product.
2. Using Select Case : SELECT CASE WHEN Obsolete = ‘N’ or InStock = ‘Y’ THEN 1 ELSE 0 END as Saleable, * FROM Product.

Can we use IF condition in select statement?

It is like a Shorthand form of CASE statement. We can conveniently use it when we need to decide between two options. There are three parts in IIF statement, first is a condition, second is a value if the condition is true and the last part is a value if the condition is false.

Can we use if else in SQL query?

In MS SQL, IF…ELSE is a type of Conditional statement. Any T-SQL statement can be executed conditionally using IF… ELSE. If the condition evaluates to True, then T-SQL statements followed by IF condition in SQL server will be executed.

How do I handle a SQL SELECT query?

SELECT Syntax

1. SELECT column1, column2, FROM table_name;
2. SELECT * FROM table_name;
3. Example. SELECT CustomerName, City FROM Customers;
4. Example. SELECT * FROM Customers;

How do I handle a SQL Select query?

What are some common clauses used with SELECT query in SQL?

The Five Clauses of the SELECT statement

• SELECT – the columns in the result set.
• FROM – names the base table(s) from which results will be retrieved.
• WHERE – specifies any conditions for the results set (filter)
• ORDER BY – sets how the result set will be ordered.
• LIMIT – sets the number of rows to be returned.

How do you write two SELECT statements in SQL?

Procedure

1. To combine two or more SELECT statements to form a single result table, use the set operators: UNION, EXCEPT or INTERSECT.
2. To keep all duplicate rows when combining result tables, specify the ALL keyword with the set operator clause.

What is the other clause use by SELECT?

The SELECT statement has many optional clauses: SELECT clause is the list of columns or SQL expressions that must be returned by the query. This is approximately the relational algebra projection operation. AS optionally provides an alias for each column or expression in the SELECT clause….Examples.

What are the three basic components of SELECT statement?

1.7. Structure of a SQL Statement

• The SQL operation.
• The target.
• The condition.

Can you have multiple SELECT statements in SQL query?

To combine two or more SELECT statements to form a single result table, use the set operators: UNION, EXCEPT or INTERSECT. For example, assume that you have the following tables to manage stock at two book stores.

How do you combine two SELECT statements?

The UNION operator is used to combine the result-set of two or more SELECT statements.

1. Every SELECT statement within UNION must have the same number of columns.
2. The columns must also have similar data types.
3. The columns in every SELECT statement must also be in the same order.