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The SELECT command can also retrieve specific
fields from a table by listing the column names
instead of using the asterisk (*).
For example, to display only the StudentID and
FirstName from the Students table, use the given
command.
If a database is like a treasure chest and you’re the treasure keeper, how would
you organise and store your precious items to make sure you can find them easily
when needed?
THE WHERE CLAUSE
The SELECT command supports several optional clauses to refine your results. The WHERE clause
is one of the most useful, as it filters records based on specified conditions.
The syntax of the WHERE clause is as follows:
SELECT * FROM table_name WHERE condition;
For example, to retrieve the records of all students with the last name ‘Sharma’, use the following
SELECT command:
For example, to find students older than 15 and show their StudentID, FirstName, and Age, use the
following SELECT command:
In SQL, you can retrieve data based on multiple conditions by using the AND and OR operators.
These operators allow you to combine more than one condition through the WHERE clause.
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