Update README.md

2026-04-30 22:13:56 +07:00 · 2021-07-29 08:30:27 +05:30
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@@ -735,3 +735,7 @@ The following guidelines indicate when the use of an index should be reconsidere
 ### Change DATA TYPE

    ALTER TABLE table_name MODIFY COLUMN column_name datatype;
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+### NOT NULL
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