## Package org.h2.expression

Expressions include mathematical operations, conditions, simple values, and functions.

See:
Description

Interface Summary
FunctionCall: This interface is used by the built-in functions, as well as the user-defined functions.
ParameterInterface: The interface for client side (remote) and server side parameters.

Class Summary
Aggregate: Implements the integrated aggregate functions, such as COUNT, MAX, SUM.
Alias: A column alias as in SELECT 'Hello' AS NAME ...
CompareLike: Pattern matching comparison expression: WHERE NAME LIKE ?
Comparison: Example comparison expressions are ID=1, NAME=NAME, NAME IS NULL.
ConditionAndOr: An 'and' or 'or' condition as in WHERE ID=1 AND NAME=?
ConditionExists: An 'exists' condition as in WHERE EXISTS(SELECT ...)
ConditionIn: An 'in' condition with a list of values, as in WHERE NAME IN(...)
ConditionInSelect: An 'in' condition with a subquery, as in WHERE ID IN(SELECT ...)
ConditionNot: A NOT condition.
Expression: An expression is a operation, a value, or a function in a query.
ExpressionColumn: A expression that represents a column of a table or view.
ExpressionList: A list of expressions, as in (ID, NAME).
ExpressionVisitor: The visitor pattern is used to iterate through all expressions of a query to optimize a statement.
Function: This class implements most built-in functions of this database.
JavaAggregate: This class wraps a user-defined aggregate.
JavaFunction: This class wraps a user-defined function.
Operation: A mathematical expression, or string concatenation.
Parameter: A parameter of a prepared statement.
ParameterRemote: A client side (remote) parameter.
Rownum: Represents the ROWNUM function.
SequenceValue: Wraps a sequence when used in a statement.
Subquery: A query returning a single value.
TableFunction: Implementation of the functions TABLE(..) and TABLE_DISTINCT(..).
ValueExpression: An expression representing a constant value.
Variable: A user-defined variable, for example: @ID.
Wildcard: A wildcard expression as in SELECT * FROM TEST.

## Package org.h2.expression Description

Expressions include mathematical operations, conditions, simple values, and functions.