How do you drop a table if exists in SQL?

Table of Contents

SQL Server DROP TABLE

First, specify the name of the table to be removed.
Second, specify the name of the database in which the table was created and the name of the schema to which the table belongs. The database name is optional.
Third, use IF EXISTS clause to remove the table only if it exists.

What happens if the table does not already exist and you try to drop it?

If we try to drop a table that does not exist, we get the following error message. We do not want any error in executing queries, especially during the execution of a bunch of code. Before SQL Server 2016, developers use the IF EXISTS statement and check for the object existence before dropping it.

Why DROP TABLE if exists?

The DROP TABLE statement deletes the specified table, and any data associated with it, from the database. The IF EXISTS clause allows the statement to succeed even if the specified tables does not exist. If the table does not exist and you do not include the IF EXISTS clause, the statement will return an error.

How do I delete a table in Teradata?

Teradata: Delete From Table

Approach 1 : Delete with the help of other table using direct filter.
Approach 2 : Delete with the help of other table using join.
Approach 3 : Delete with the help of other table using traditional WHERE clause join.
Approach 4 : Delete with the help of other table using EXISTS condition.

How do you check if a table exist in SQL Server?

To check if a table exists in SQL Server, you can use the INFORMATION_SCHEMA. TABLES table. You can use this table with an IF THEN clause do determine how your query responds whether or not a table exists.

How can a table be deleted from the database provide an example?

SQL DROP TABLE Statement

DROP TABLE table_name;
Example. DROP TABLE Shippers;
TRUNCATE TABLE table_name;

How do you delete a table that exists?

Permissions Required.
Setup.
Drop Table that Does Not Exist.
Option 1 – DROP TABLE if exists using OBJECT_ID() function (all supported versions)
Option 2 – DROP TABLE if exists querying the sys.
Option 3 – DROP TABLE if exists querying the INFORMATION_SCHEMA.
Option 4 – DROP TABLE IF EXISTS (SQL Server 2016 and up)

How do I drop a database in Teradata?

DROP TABLE command is used to drop a table. When the DROP TABLE is issued, data in the table is deleted and the table is dropped.

How do I delete duplicate records in Teradata?

Teradata Removing Duplicates From Table

Approach 1: By create a new table and rename it as main table. Creating new table with unique data CREATE TABLE student_new AS (SELECT DISTINCT * FROM student) WITH DATA AND STATS;
Approach 2: By using temporary SET table.
Approach 3: By using temporary MULTISET table.

How do you drop a table if exists in SQL?