Firebird Documentation IndexFirebird 2.5 Language Reference → Common Language Elements
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Chapter 4: Common Language Elements

Table of Contents

Expressions
Constants
String Constants (Literals)
Number Constants
SQL Operators
Operator Precedence
NEXT VALUE FOR
Conditional Expressions
CASE
NULL in Expressions
Expressions Returning NULL
NULL in Logical Expressions
Subqueries
Correlated Subqueries
Scalar Results
Predicates
Assertions
Comparison Predicates
Other Comparison Predicates
Existential Predicates
EXISTS
IN
SINGULAR
Quantified Subquery Predicates
ALL
ANY and SOME

This chapter covers the elements that are common throughout the implementation of the SQL language—the expressions that are used to extract and operate on assertions about data and the predicates that test the truth of those assertions.

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Firebird Documentation IndexFirebird 2.5 Language Reference → Common Language Elements