Database Languages in SQL › Aggregation functions - MySQL › Question #15502
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QWhich aggregation function in MySQL returns the total number of non-null values in a column?

ID: #15502 Aggregation functions - MySQL 110 views
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#15502Q ID
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Aggregation functions - MySQLTopic
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  • A AVG ✔ ✖
  • B SUM ✔ ✖
  • C COUNT ✔ ✖
  • D NONNULL ✔ ✖
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Explanation

The COUNT function in MySQL, when used without any modifiers, returns the total number of non-null values in a column. It counts all the non-null records in the specified column.

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