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IS NULL

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How to make WHERE col LIKE '%' select NULL values too?

When we apply LIKE keyword to any query then it doesn't return NULL values, and sometimes it required to return NULL values as well. We can do this by using IS NULL or IFNULL operator. Example: We have a table "employee" as be...

What is NULL value in MySQL?

When we don't define any data for a column then the column holds the NULL value. In MySQL, NULL values are used to represent data that is missing. NULL Values If you have created a table with optional columns then you can insert and update ...
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