What is the DELETE statement in SQL, and how is it used to remove data from a table?
What is the DELETE statement in SQL, and how is it used to remove data from a table?
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Aryan Kumar
31-Aug-2023The DELETE statement in SQL is used to remove data from a table. The basic syntax of the DELETE statement is:
The
table_nameis the name of the table from which you want to delete data. Theconditionis an optional clause that specifies the rows that you want to delete. If you omit theconditionclause, all rows in the table will be deleted.For example, the following statement will delete all rows from the
customerstable:The following statement will delete all rows from the
customerstable where thecountrycolumn is equal to "USA":You can also use the DELETE statement to delete multiple rows from a table by specifying a list of row IDs in the
conditionclause. For example, the following statement will delete the rows with IDs 1, 2, and 3 from thecustomerstable:The DELETE statement is a powerful tool that can be used to remove data from a table. It is important to use it carefully, as it can be irreversible.
Here are some additional things to keep in mind when using the DELETE statement:
WHEREclause to specify the rows that you want to delete from each table.