HiveRemoveSqCountCheck (Hive Query Language 4.0.0 API)

java.lang.Object
- org.apache.calcite.plan.RelOptRule
- - org.apache.hadoop.hive.ql.optimizer.calcite.rules.HiveRemoveSqCountCheck

```
public class HiveRemoveSqCountCheck
extends org.apache.calcite.plan.RelOptRule
```
Planner rule that removes UDF sq_count_check from a plan if 1) either group by keys in a subquery are constant and there is no windowing or grouping sets 2) OR there are no group by keys but only aggregate Both of the above case will produce at most one row, therefore it is safe to remove sq_count_check which was introduced earlier in the plan to ensure that this condition is met at run time

Nested Class Summary
- Nested classes/interfaces inherited from class org.apache.calcite.plan.RelOptRule
  org.apache.calcite.plan.RelOptRule.ConverterRelOptRuleOperand

Fields
Modifier and Type	Field and Description
`static HiveRemoveSqCountCheck`	`INSTANCE`

Constructors
Constructor and Description
`HiveRemoveSqCountCheck()`

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`boolean`	`matches(org.apache.calcite.plan.RelOptRuleCall call)`
`void`	`onMatch(org.apache.calcite.plan.RelOptRuleCall call)`

Methods inherited from class org.apache.calcite.plan.RelOptRule
any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered

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

public static final HiveRemoveSqCountCheck INSTANCE

Constructor Detail
- HiveRemoveSqCountCheck
```
public HiveRemoveSqCountCheck()
```

Class HiveRemoveSqCountCheck