SqlRandFunction (Apache Calcite API)

java.lang.Object
- org.apache.calcite.sql.SqlOperator
- - org.apache.calcite.sql.SqlFunction
  - - org.apache.calcite.sql.fun.SqlRandFunction

```
public class SqlRandFunction
extends SqlFunction
```
The RAND function. There are two overloads:
- RAND() returns a random double between 0 and 1
- RAND(seed) returns a random double between 0 and 1, initializing the random number generator with seed on first call

Field Summary
- Fields inherited from class org.apache.calcite.sql.SqlOperator
  kind, MDX_PRECEDENCE, NL

Constructor Summary

Constructors
Constructor Description

SqlRandFunction()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`SqlSyntax`	`getSyntax()`	Returns the syntactic type of this operator, never null.
`boolean`	`isDynamicFunction()`

Methods inherited from class org.apache.calcite.sql.SqlFunction
deriveType, getFunctionType, getNameAsId, getParamNames, getParamTypes, getSqlIdentifier, isQuantifierAllowed, unparse, validateCall, validateQuantifier

Methods inherited from class org.apache.calcite.sql.SqlOperator
acceptCall, acceptCall, adjustType, allowsFraming, argumentMustBeScalar, checkOperandCount, checkOperandTypes, constructArgNameList, constructArgTypeList, constructOperandList, createCall, createCall, createCall, createCall, equals, getAllowedSignatures, getAllowedSignatures, getKind, getLeftPrec, getMonotonicity, getMonotonicity, getName, getOperandCountRange, getOperandTypeChecker, getOperandTypeInference, getReturnTypeInference, getRightPrec, getSignatureTemplate, hashCode, inferReturnType, inferReturnType, isAggregator, isDeterministic, isGroup, isGroupAuxiliary, isName, leftPrec, preValidateCall, requiresDecimalExpansion, requiresOrder, requiresOver, rewriteCall, rightPrec, toString, unparseListClause, unparseListClause, validateOperands, validRexOperands

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

- Constructor Detail
  - SqlRandFunction
```
public SqlRandFunction()
```
- Method Detail
  - getSyntax
```
public SqlSyntax getSyntax()
```
    Description copied from class: SqlOperator
    
    Returns the syntactic type of this operator, never null.
    
    Overrides:
    
    getSyntax in class SqlFunction
  - isDynamicFunction
```
public boolean isDynamicFunction()
```
    Overrides:
    
    isDynamicFunction in class SqlOperator
    
    Returns:
    
    true iff it is unsafe to cache query plans referencing this operator; false is assumed by default