Question

The FROM SQL clause is used to...
A.specify what table we are selecting or deleting data FROM
B.specify range for search condition
C.specify search condition
D.None of these

Answer 1

Hi there,

Option A is correct.

Answer 2

Option (A) specify what table we are selecting or deleting data FROM is correct.

The FROM clause in a SQL statement is used to specify the table or tables from which data is to be selected, updated, or deleted. It allows you to specify the source of the data that you are working with.

• For example, in the following SELECT statement, the FROM clause specifies the "customers" table as the source of the data:

• SELECT * FROM customers;
• This statement will retrieve all rows and columns from the "customers" table.

In addition to specifying the table name, you can also use the FROM clause to specify multiple tables, using a variety of join types to specify how the data from the different tables should be combined.

• For example, the following statement uses a LEFT JOIN to combine data from the "customers" and "orders" tables:

• SELECT * FROM customers LEFT JOIN orders ON customers.customer_id = orders.customer_id;

• In this case, the query will retrieve all rows from the "customers" table, along with any matching rows from the "orders" table. If there are no matching rows in the "orders" table, NULL values will be returned for the columns from the "orders" table.

The FROM clause is also used in DELETE statements to specify the table from which rows should be deleted. For example:

• DELETE FROM customers WHERE customer_id = 123;

• This statement will delete the row with a "customer_id" of 123 from the "customers" table.

Therefore, the correct option is (A).

To learn more about SQL from the given link.

https://brainly.in/question/31916801

#SPJ6