There are three main ways to modify data in SQL: UPDATE statement: Modify existing data and specify the columns and conditions to be updated. INSERT statement: Inserts a new row, specifying the columns and values to be inserted. DELETE statement: deletes rows with specified conditions.
Modify data in SQL
In SQL (Structured Query Language), there are several ways to Modify data in the database:
UPDATE statement:
The UPDATE statement is used to modify data in an existing table. The syntax is as follows:
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Example:
Update the "address" column in the table named "customers" and update the address of "John Doe" to "123 Main Street ":
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INSERT statement:
The INSERT statement is used to insert new rows into a table. The syntax is as follows:
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Example:
Insert a new row into the table named "orders":
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DELETE statement:
DELETE statement is used to delete rows from a table. The syntax is as follows:
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Example:
Delete the row with product ID 10 from the table named "products":
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