GUID is now supported by Kusto.

Although it should be converted to "uuid" python type we will treat it as string to enable quick mitigation

pykusto/_src/expressions.py

@@ -407,7 +407,7 @@ class _NumberExpression(BaseExpression):
         return _NumberExpression(KQL(f'round({self.kql})' if precision is None else f'round({self.kql}, {_to_kql(precision)})'))
 
 
-@_plain_expression(_KustoType.STRING)
+@_plain_expression(_KustoType.STRING, _KustoType.GUID)
 class _StringExpression(BaseExpression):
     # We would like to allow using len(), but Python requires it to return an int, so we can't
     def string_size(self) -> _NumberExpression:
@@ -894,7 +894,7 @@ class _NumberAggregationExpression(AggregationExpression, _NumberExpression):
     pass
 
 
-@_aggregation_expression(_KustoType.STRING)
+@_aggregation_expression(_KustoType.STRING, _KustoType.GUID)
 class _StringAggregationExpression(AggregationExpression, _StringExpression):
     pass
 
@@ -1013,7 +1013,7 @@ class _DynamicColumn(_ArrayColumn, _MappingColumn):
     pass
 
 
-@_typed_column(_KustoType.STRING)
+@_typed_column(_KustoType.STRING, _KustoType.GUID)
 class _StringColumn(BaseColumn, _StringExpression):
     pass
 

pykusto/_src/kql_converters.py

@@ -49,7 +49,7 @@ def _bool_to_kql(b: bool) -> KQL:
     return KQL('true') if b else KQL('false')
 
 
-@_kql_converter(_KustoType.STRING)
+@_kql_converter(_KustoType.STRING, _KustoType.GUID)
 def _str_to_kql(s: str) -> KQL:
     return KQL(f'"{s}"')
 

pykusto/_src/type_utils.py

@@ -20,7 +20,7 @@ class _KustoType(Enum):
     STRING = ('string', 'StringBuffer', 'System.String', str)
     TIMESPAN = ('timespan', 'TimeSpan', 'System.TimeSpan', timedelta)
     DECIMAL = ('decimal', 'Decimal', 'System.Data.SqlTypes.SqlDecimal', int)
-    GUID = ('guid', 'UniqueId', 'System.Guid')  # Not supported by Kusto yet
+    GUID = ('guid', 'UniqueId', 'System.Guid', str)  # Converted to string and not uuid for now
 
     # Deprecated types, kept here for back compatibility
     # https://docs.microsoft.com/en-us/azure/data-explorer/kusto/query/scalar-data-types/unsupported-data-types