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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Answer:
He begins his warnings to the American people by stressing that their independence, peace at home and abroad, safety, prosperity, and liberty are all dependent upon unity among the states.
Explanation:
The answer is true. In a democratic society leaders must support the needs of the common good. This is the correct answer because compared to other forms of government such as a monarchy or a dictatorship where the most important people in society are the leaders, in a democracy everyone is equally important. It is important to respect all citizens rights and to be fair to them. This is why leaders must support the needs of the common good. They need to make sure they are running a fair society for everyone in the society, not just for a specific group of people.
Cro-Magnons had better tools, making them better hunters.
They painted on cave walls.
Answer:
d. The first statement more likely uses emotive language and the second is more likely a fact.
Explanation:
The statement of the leader of the political rivalry includes highly emotional language that may or may not be accurate in describing reality. Even if it was true that farmers are suffering, the politician is likely exagerating the claims in order to rile up his supporters.
The statement of the economist is a fact. The economist is citing evidence, and is not expressing an opinion on the subject matter.
