Task 5 - SQL WHERE Clause

Post Reply
User avatar
Site Admin
Posts: 215
Joined: 06 Oct 2017, 11:19
Status: Offline

11 Oct 2017, 12:19

The SQL WHERE ClauseThe WHERE clause is used to filter records.The WHERE clause is used to extract only those records that fulfill a specified condition.WHERE Syntax

Code: Select all

SELECT [i]column1[/i],[i] column2, ...[/i]
FROM [i]table_name[/i]
WHERE [i]condition[/i];
WHERE Clause ExampleThe following SQL statement selects all the customers from the country "Mexico", in the "Customers" table:Example

Code: Select all

SELECT * FROM Customers
WHERE Country='Mexico';
Try it Yourself »

Text Fields vs. Numeric FieldsSQL requires single quotes around text values (most database systems will also allow double quotes).
However, numeric fields should not be enclosed in quotes: Example

Code: Select all

SELECT * FROM Customers
WHERE CustomerID=1;
Try it Yourself »

Operators in The WHERE Clause

The following operators can be used in the WHERE clause: 

sql operators.png

Note: Use Demo database as of the previous Task
You do not have the required permissions to view the files attached to this post.
Mayank Goyal

Post Reply
Actuarial Blogs Insurology

icon icon