How can SQL determine if a table exists?

In SQL, you can use the following method to check if a data table exists:

  1. Check if a data table exists by using the system table sys.tables (or INFORMATION_SCHEMA.TABLES).
SELECT *
FROM sys.tables
WHERE name = 'table_name';
  1. By using the IF EXISTS statement:
IF EXISTS(SELECT 1 FROM sys.tables WHERE name = 'table_name')
    PRINT 'Table exists.'
ELSE
    PRINT 'Table does not exist.';
  1. Check if a data table exists by querying the sysobjects table.
SELECT *
FROM sysobjects
WHERE xtype = 'U'
    AND name = 'table_name';

Please note that the ‘table_name’ in the above methods should be replaced with the actual name of the data table you want to evaluate.

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