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प्रश्न
The COUNT(*) function provides the total number of ______ within a relation (table) in a relational database.
पर्याय
Columns
Unique values
Not-null values
Rows
MCQ
रिकाम्या जागा भरा
उत्तर
The COUNT(*) function provides the total number of rows within a relation (table) in a relational database.
Explanation:
The COUNT(*) method in SQL calculates the total number of rows in a table, including those with null values. It counts all rows, independent of the contents of the columns.
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