Identify the correctly constructed ALTER TABLE statement to add a UNIQUE constraint to the column user_number with the constraint name user_number_unique on the table called 'user'.

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06-07-2022
Computers and Technology

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Identify the correctly constructed ALTER TABLE statement to add a UNIQUE constraint to the column user_number with the constraint name user_number_unique on the table called 'user'.

Sagot :

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mbbvkf75ky mbbvkf75ky · Answer 1 · 2022-07-12T16:49:46-04:00

mbbvkf75ky mbbvkf75ky

12-07-2022

ALTER TABLE user ADD CONSTRAINT user_number_unique UNIQUE (user_number);

Common mistakes with adding the UNIQUE constraint to an existing column include not having ( ) around the column names, omitting the keyword UNIQUE, incorrectly spelling the column name, and not including the constraint name.

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Identify the correctly constructed ALTER TABLE statement to add a UNIQUE constraint to the column user_number with the constraint name user_number_unique on the table called 'user'.

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