public class Count extends AggregateFunction
| Constructor and Description |
|---|
Count(Column column)
Construct an COUNT function class with the column to count.
|
Count(Column column,
boolean distinct)
Construct an COUNT function class with the column to count
and possibly a distinct modifier.
|
Count(String sqlExpression)
Construct an COUNT function class with an SQL expression to count.
|
| Modifier and Type | Method and Description |
|---|---|
void |
setFunction(String function)
This method cannot be called, an UnsupportedOperationException
will always be thrown.
|
getArgument, getArguments, getColumn, getColumnName, getFullTableName, getFunction, getSchemaName, getSqlExpression, getTableName, isDistinct, setArguments, setColumnpublic Count(Column column)
column - the Column to count.public Count(String sqlExpression)
sqlExpression - the SQL expression to count.public Count(Column column, boolean distinct)
column - the Column to count.distinct - whether to count only over distinct values.public void setFunction(String function)
setFunction in class AggregateFunctionfunction - disregarded.UnsupportedOperationException - always.Copyright © 2000–2020 The Apache Software Foundation. All rights reserved.