示例#1
0
 public RelDataType inferReturnType(SqlOperatorBinding opBinding) {
   assert opBinding.getOperandCount() == 1;
   final RelDataType multisetType = opBinding.getOperandType(0);
   RelDataType componentType = multisetType.getComponentType();
   assert componentType != null : "expected a multiset type: " + multisetType;
   final RelDataTypeFactory typeFactory = opBinding.getTypeFactory();
   final RelDataType type =
       typeFactory.builder().add(SqlUtil.deriveAliasFromOrdinal(0), componentType).build();
   return typeFactory.createMultisetType(type, -1);
 }
示例#2
0
 public RelDataType inferReturnType(SqlOperatorBinding opBinding) {
   assert opBinding.getOperandCount() == 1;
   final RelDataType recordMultisetType = opBinding.getOperandType(0);
   RelDataType multisetType = recordMultisetType.getComponentType();
   assert multisetType != null : "expected a multiset type: " + recordMultisetType;
   final List<RelDataTypeField> fields = multisetType.getFieldList();
   assert fields.size() > 0;
   final RelDataType firstColType = fields.get(0).getType();
   return opBinding.getTypeFactory().createMultisetType(firstColType, -1);
 }