FunctionsDB2Derby

java.lang.Object
- org.h2.expression.Expression
- - org.h2.expression.OperationN
  - - org.h2.expression.function.FunctionN
    - - org.h2.mode.ModeFunction
      - org.h2.mode.FunctionsDB2Derby

All Implemented Interfaces:

ExpressionWithVariableParameters, NamedExpression, HasSQL, Typed
```
public final class FunctionsDB2Derby
extends ModeFunction
```
Functions for Mode.ModeEnum.DB2 and Mode.ModeEnum.Derby compatibility modes.

Field Summary
- Fields inherited from class org.h2.mode.ModeFunction
  info, VAR_ARGS
- Fields inherited from class org.h2.expression.OperationN
  args, argsCount, type
- Fields inherited from class org.h2.expression.Expression
  AUTO_PARENTHESES, MAP_IN_AGGREGATE, MAP_IN_WINDOW, MAP_INITIAL, WITH_PARENTHESES, WITHOUT_PARENTHESES
- Fields inherited from interface org.h2.util.HasSQL
  ADD_PLAN_INFORMATION, DEFAULT_SQL_FLAGS, NO_CASTS, QUOTE_ONLY_WHEN_REQUIRED, REPLACE_LOBS_FOR_TRACE, TRACE_SQL_FLAGS

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static FunctionsDB2Derby`	`getFunction(java.lang.String upperName)`	Returns mode-specific function for a given name, or `null`.
`Value`	`getValue(SessionLocal session)`	Return the resulting value for the current row.
`Expression`	`optimize(SessionLocal session)`	Try to optimize the expression.

Methods inherited from class org.h2.mode.ModeFunction
doneWithParameters, getCompatibilityDateTimeValueFunction, getFunction, getName, isEverything

Methods inherited from class org.h2.expression.function.FunctionN
getUnenclosedSQL, getValue

Methods inherited from class org.h2.expression.OperationN
addParameter, getCost, getSubexpression, getSubexpressionCount, getType, inlineSubexpressions, mapColumns, optimizeArguments, setEvaluatable, updateAggregate

Methods inherited from class org.h2.expression.Expression
addFilterConditions, createIndexConditions, getAlias, getBooleanValue, getColumnName, getColumnNameForView, getEnclosedSQL, getNonAliasExpression, getNotIfPossible, getNullable, getSchemaName, getSQL, getSQL, getSQL, getSQL, getTableAlias, getTableName, getTypeIfStaticallyKnown, getWhenSQL, getWhenValue, isConstant, isIdentity, isNullConstant, isValueSet, isWhenConditionOperand, needParentheses, optimizeCondition, toString, writeExpressions, writeExpressions

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.h2.util.HasSQL
getTraceSQL

- Method Detail
  - getFunction
```
public static FunctionsDB2Derby getFunction(java.lang.String upperName)
```
    Returns mode-specific function for a given name, or null.
    
    Parameters:
    
    upperName - the upper-case name of a function
    
    Returns:
    
    the function with specified name or null
  - getValue
```
public Value getValue(SessionLocal session)
```
    Description copied from class: Expression
    
    Return the resulting value for the current row.
    
    Overrides:
    
    getValue in class FunctionN
    
    Parameters:
    
    session - the session
    
    Returns:
    
    the result
  - optimize
```
public Expression optimize(SessionLocal session)
```
    Description copied from class: Expression
    
    Try to optimize the expression.
    
    Specified by:
    
    optimize in class Expression
    
    Parameters:
    
    session - the session
    
    Returns:
    
    the optimized expression