Table.TableOperation (cudfjni 21.06.1 API)

java.lang.Object
- ai.rapids.cudf.Table.TableOperation

Enclosing class:: Table

public static final class Table.TableOperation
extends Object

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method and Description
`Table`	`fullJoin(Table.TableOperation rightJoinIndices)` Joins two tables on the join columns that are passed in.
`Table`	`fullJoin(Table.TableOperation rightJoinIndices, boolean compareNullsEqual)` Joins two tables on the join columns that are passed in.
`PartitionedTable`	`hashPartition(HashType type, int numberOfPartitions)` Hash partition a table into the specified number of partitions.
`PartitionedTable`	`hashPartition(int numberOfPartitions)` Hash partition a table into the specified number of partitions.
`Table`	`innerJoin(Table.TableOperation rightJoinIndices)` Joins two tables on the join columns that are passed in.
`Table`	`innerJoin(Table.TableOperation rightJoinIndices, boolean compareNullsEqual)` Joins two tables on the join columns that are passed in.
`Table`	`leftAntiJoin(Table.TableOperation rightJoinIndices)` Performs an anti-join between a left table and a right table, returning only the rows from the left table that do not match rows in the right table on the join keys.
`Table`	`leftAntiJoin(Table.TableOperation rightJoinIndices, boolean compareNullsEqual)` Performs an anti-join between a left table and a right table, returning only the rows from the left table that do not match rows in the right table on the join keys.
`Table`	`leftJoin(Table.TableOperation rightJoinIndices)` Joins two tables on the join columns that are passed in.
`Table`	`leftJoin(Table.TableOperation rightJoinIndices, boolean compareNullsEqual)` Joins two tables on the join columns that are passed in.
`Table`	`leftSemiJoin(Table.TableOperation rightJoinIndices)` Performs a semi-join between a left table and a right table, returning only the rows from the left table that match rows in the right table on the join keys.
`Table`	`leftSemiJoin(Table.TableOperation rightJoinIndices, boolean compareNullsEqual)` Performs a semi-join between a left table and a right table, returning only the rows from the left table that match rows in the right table on the join keys.
`PartitionedTable`	`partition(int numberOfPartitions)` Deprecated. Use `hashPartition(int)`

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

- Method Detail
  - leftJoin
```
public Table leftJoin(Table.TableOperation rightJoinIndices,
                      boolean compareNullsEqual)
```
    Joins two tables on the join columns that are passed in. Usage: Table t1 ... Table t2 ... Table result = t1.onColumns(0,1).leftJoin(t2.onColumns(2,3));
    
    Parameters:
    
    rightJoinIndices - - Indices of the right table to join on
    
    compareNullsEqual - - Whether null join-key values should match or not.
    
    Returns:
    
    the joined table. The order of the columns returned will be join columns, left non-join columns, right non-join columns.
  - leftJoin
```
public Table leftJoin(Table.TableOperation rightJoinIndices)
```
    Joins two tables on the join columns that are passed in. Usage: Table t1 ... Table t2 ... Table result = t1.onColumns(0,1).leftJoin(t2.onColumns(2,3));
    
    Parameters:
    
    rightJoinIndices - - Indices of the right table to join on
    
    Returns:
    
    the joined table. The order of the columns returned will be join columns, left non-join columns, right non-join columns.
  - innerJoin
```
public Table innerJoin(Table.TableOperation rightJoinIndices,
                       boolean compareNullsEqual)
```
    Joins two tables on the join columns that are passed in. Usage: Table t1 ... Table t2 ... Table result = t1.onColumns(0,1).innerJoin(t2.onColumns(2,3));
    
    Parameters:
    
    rightJoinIndices - - Indices of the right table to join on
    
    compareNullsEqual - - Whether null join-key values should match or not.
    
    Returns:
    
    the joined table. The order of the columns returned will be join columns, left non-join columns, right non-join columns.
  - innerJoin
```
public Table innerJoin(Table.TableOperation rightJoinIndices)
```
    Joins two tables on the join columns that are passed in. Usage: Table t1 ... Table t2 ... Table result = t1.onColumns(0,1).innerJoin(t2.onColumns(2,3));
    
    Parameters:
    
    rightJoinIndices - - Indices of the right table to join on
    
    Returns:
    
    the joined table. The order of the columns returned will be join columns, left non-join columns, right non-join columns.
  - fullJoin
```
public Table fullJoin(Table.TableOperation rightJoinIndices,
                      boolean compareNullsEqual)
```
    Joins two tables on the join columns that are passed in. Usage: Table t1 ... Table t2 ... Table result = t1.onColumns(0,1).fullJoin(t2.onColumns(2,3));
    
    Parameters:
    
    rightJoinIndices - - Indices of the right table to join on
    
    compareNullsEqual - - Whether null join-key values should match or not.
    
    Returns:
    
    the joined table. The order of the columns returned will be join columns, left non-join columns, right non-join columns.
  - fullJoin
```
public Table fullJoin(Table.TableOperation rightJoinIndices)
```
    Joins two tables on the join columns that are passed in. Usage: Table t1 ... Table t2 ... Table result = t1.onColumns(0,1).fullJoin(t2.onColumns(2,3));
    
    Parameters:
    
    rightJoinIndices - - Indices of the right table to join on
    
    Returns:
    
    the joined table. The order of the columns returned will be join columns, left non-join columns, right non-join columns.
  - leftSemiJoin
```
public Table leftSemiJoin(Table.TableOperation rightJoinIndices,
                          boolean compareNullsEqual)
```
    Performs a semi-join between a left table and a right table, returning only the rows from the left table that match rows in the right table on the join keys. Usage: Table t1 ... Table t2 ... Table result = t1.onColumns(0,1).leftSemiJoin(t2.onColumns(2,3));
    
    Parameters:
    
    rightJoinIndices - - Indices of the right table to join on
    
    compareNullsEqual - - Whether null join-key values should match or not.
    
    Returns:
    
    the left semi-joined table.
  - leftSemiJoin
```
public Table leftSemiJoin(Table.TableOperation rightJoinIndices)
```
    Performs a semi-join between a left table and a right table, returning only the rows from the left table that match rows in the right table on the join keys. Usage: Table t1 ... Table t2 ... Table result = t1.onColumns(0,1).leftSemiJoin(t2.onColumns(2,3));
    
    Parameters:
    
    rightJoinIndices - - Indices of the right table to join on
    
    Returns:
    
    the left semi-joined table.
  - leftAntiJoin
```
public Table leftAntiJoin(Table.TableOperation rightJoinIndices,
                          boolean compareNullsEqual)
```
    Performs an anti-join between a left table and a right table, returning only the rows from the left table that do not match rows in the right table on the join keys. Usage: Table t1 ... Table t2 ... Table result = t1.onColumns(0,1).leftAntiJoin(t2.onColumns(2,3));
    
    Parameters:
    
    rightJoinIndices - - Indices of the right table to join on
    
    compareNullsEqual - - Whether null join-key values should match or not.
    
    Returns:
    
    the left anti-joined table.
  - leftAntiJoin
```
public Table leftAntiJoin(Table.TableOperation rightJoinIndices)
```
    Performs an anti-join between a left table and a right table, returning only the rows from the left table that do not match rows in the right table on the join keys. Usage: Table t1 ... Table t2 ... Table result = t1.onColumns(0,1).leftAntiJoin(t2.onColumns(2,3));
    
    Parameters:
    
    rightJoinIndices - - Indices of the right table to join on
    
    Returns:
    
    the left anti-joined table.
  - hashPartition
```
public PartitionedTable hashPartition(int numberOfPartitions)
```
    Hash partition a table into the specified number of partitions. Uses the default MURMUR3 hashing.
    
    Parameters:
    
    numberOfPartitions - - number of partitions to use
    
    Returns:
    
    - PartitionedTable - Table that exposes a limited functionality of the Table class
  - hashPartition
```
public PartitionedTable hashPartition(HashType type,
                                      int numberOfPartitions)
```
    Hash partition a table into the specified number of partitions.
    
    Parameters:
    
    type - the type of hash to use. Depending on the type of hash different restrictions on the hash column(s) may exist. Not all hash functions are guaranteed to work besides IDENTITY and MURMUR3.
    
    numberOfPartitions - - number of partitions to use
    
    Returns:
    
    PartitionedTable - Table that exposes a limited functionality of the Table class
  - partition
```
@Deprecated
public PartitionedTable partition(int numberOfPartitions)
```
    Deprecated. Use hashPartition(int)
    
    Hash partition a table into the specified number of partitions.
    
    Parameters:
    
    numberOfPartitions - - number of partitions to use
    
    Returns:
    
    - PartitionedTable - Table that exposes a limited functionality of the Table class

Class Table.TableOperation

Method Summary

Methods inherited from class java.lang.Object

Method Detail

leftJoin

leftJoin

innerJoin

innerJoin

fullJoin

fullJoin

leftSemiJoin

leftSemiJoin

leftAntiJoin

leftAntiJoin

hashPartition

hashPartition

partition