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Update README.md
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@@ -468,5 +468,4 @@ Following are some of the most commonly used constraints available in SQL −
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### IS NULL
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### IS NULL
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- The NULL operator is used to compare a value with a NULL value.
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- The NULL operator is used to compare a value with a NULL value.
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### UNIQUE
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### UNIQUE
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- The UNIQUE operator searches every row of a specified table for uniqueness (no duplicates).
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The UNIQUE operator searches every row of a specified table for uniqueness (no duplicates).
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