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Data Types Depending on their histories, different SQL implementations support a vari-ety of data types. The SQL:2003 specification re...
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Relational Operators EXCEPT The UNION operation acts on two source tables and returns all rows that appear in either table. The I...
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Manipulating Database Data In principle, database manipulation is quite simple. Understanding how to add data to a table isn’t diffic...
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Controlling Program Flow and Making Decisions Some VBA procedures start at the code’s beginning and progress line by line to the end,...
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The ALL, SOME, and ANY quantifiers Another way to make sure that a subquery returns a single value is to intro-duce it with a qu...