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son4ous [18]
1 year ago
7

The sql aggregate function that gives the number of rows containing non-null values for a given column is _____.

Social Studies
1 answer:
Anastaziya [24]1 year ago
3 0

The answer is Count. Count is an aggregate method in SQL that returns the number of rows for a specified column that have non-null values.

<h3>What is the Meaning of Null?</h3>

When a field in a database has no values at all, this is known as null and indicates that the field’s value is unknown.

A null value for a number field, text field, or space value is different from a zero value. Null indicates that no value has been recorded in a database field.

A value and a null cannot be compared. The Structured Query Language query cannot be written as SELECT * FROM Customer where email Address=null, for instance, if it is intended to obtain all customers without email addresses from a Customer Addresses table.

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7 0
1 year ago
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