Page 81 - 2629_Devagiri_C-8

INSERTING DATA TO SPECIFIC COLUMN The SELECT command can also retrieve specific
To insert data into specific columns, list only those columns in the INSERT statement. The remaining fields from a table by listing the column names

columns will be set to their default values or left NULL. instead of using the asterisk (*).
The syntax for inserting into specific columns is as follows: For example, to display only the StudentID and
FirstName from the Students table, use the given
INSERT INTO table_name (column1, column2, ...)
command.
VALUES (value1, value2, ...);
The command to insert data into specific columns of a table is as follows:

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
RETRIEVING DATA FROM TABLE is one of the most useful, as it filters records based on specified conditions.
The syntax of the WHERE clause is as follows:
Retrieving data from a table involves using commands to fetch specific or all records stored in it.
This helps in viewing and analysing the required information easily. SELECT * FROM table_name WHERE condition;
For example, to retrieve the records of all students with the last name ‘Sharma’, use the following
THE SELECT COMMAND SELECT command:

The SELECT command retrieves zero or more rows from a table. It used to join information from

different tables and filter specific information as per the required criteria.
The syntax to use the SELECT command as follows:

SELECT * FROM table_name;
Where, * is used to select all the columns of the specified table.

To display all the data in the table, the SELECT command will be as follows:
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.

79
MySQL: My First Database