Introduction to SQL
Let the statementSELECT column1 FROM myTable;return 10 rows. The statementSELECT ALL column1 FROM myTable;will return

more than 10 rows
None of these
less than 10 rows
exactly 10 rows

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Introduction to SQL
NULL is

not a value
the same as blank for character
the same as 0 for integer and blank for character
the same as 0 for integer

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