YQL-19845 CurrentLanguageVersion func

commit_hash:2af511a18740c931b471dc1f2ff36a8b4ce573a8

9 files changed, 55 insertions, 12 deletions

diff --git a/yql/essentials/core/type_ann/type_ann_core.cpp b/yql/essentials/core/type_ann/type_ann_core.cpp
index af3d5332696..a4a780a71af 100644
--- a/yql/essentials/core/type_ann/type_ann_core.cpp
+++ b/yql/essentials/core/type_ann/type_ann_core.cpp
@@ -11088,6 +11088,26 @@ template <NKikimr::NUdf::EDataSlot DataSlot>
         return IGraphTransformer::TStatus::Repeat;
     }
 
+    IGraphTransformer::TStatus CurrentLanguageVersionWrapper(const TExprNode::TPtr& input, TExprNode::TPtr& output, TExtContext& ctx) {
+        if (!EnsureArgsCount(*input, 0, ctx.Expr)) {
+            return IGraphTransformer::TStatus::Error;
+        }
+
+        TLangVersionBuffer buffer;
+        TStringBuf str;
+        if (!FormatLangVersion(ctx.Types.LangVer, buffer, str)) {
+            str = "";
+        }
+
+        output = ctx.Expr.Builder(input->Pos())
+            .Callable("String")
+                .Atom(0, str)
+            .Seal()
+            .Build();
+
+        return IGraphTransformer::TStatus::Repeat;
+    }
+
     IGraphTransformer::TStatus SecureParamWrapper(const TExprNode::TPtr& input, TExprNode::TPtr&, TExtContext& ctx) {
         if (!EnsureArgsCount(*input, 1, ctx.Expr)) {
             return IGraphTransformer::TStatus::Error;
@@ -13145,6 +13165,7 @@ template <NKikimr::NUdf::EDataSlot DataSlot>
         ExtFunctions["CurrentOperationId"] = &CurrentOperationIdWrapper;
         ExtFunctions["CurrentOperationSharedId"] = &CurrentOperationSharedIdWrapper;
         ExtFunctions["CurrentAuthenticatedUser"] = &CurrentAuthenticatedUserWrapper;
+        ExtFunctions["CurrentLanguageVersion"] = &CurrentLanguageVersionWrapper;
         ExtFunctions["SecureParam"] = &SecureParamWrapper;
         ExtFunctions["UnsafeTimestampCast"] = &UnsafeTimestampCastWrapper;
         ExtFunctions["JsonValue"] = &JsonValueWrapper;
diff --git a/yql/essentials/data/language/sql_functions.json b/yql/essentials/data/language/sql_functions.json
index db6ce060758..11c9332aae5 100644
--- a/yql/essentials/data/language/sql_functions.json
+++ b/yql/essentials/data/language/sql_functions.json
@@ -1 +1 @@
-[{"name":"Abs","kind":"Normal"},{"name":"AdaptiveDistanceHistogram","kind":"Agg"},{"name":"AdaptiveDistanceHistogramCDF","kind":"Agg"},{"name":"AdaptiveWardHistogram","kind":"Agg"},{"name":"AdaptiveWardHistogramCDF","kind":"Agg"},{"name":"AdaptiveWeightHistogram","kind":"Agg"},{"name":"AdaptiveWeightHistogramCDF","kind":"Agg"},{"name":"AddMember","kind":"Normal"},{"name":"AddTimezone","kind":"Normal"},{"name":"AggList","kind":"Agg"},{"name":"AggListDistinct","kind":"Agg"},{"name":"AggregateFlatten","kind":"Normal"},{"name":"AggregateTransformInput","kind":"Normal"},{"name":"AggregateTransformOutput","kind":"Normal"},{"name":"AsAtom","kind":"Normal"},{"name":"AsDict","kind":"Normal"},{"name":"AsDictStrict","kind":"Normal"},{"name":"AsEnum","kind":"Normal"},{"name":"AsList","kind":"Normal"},{"name":"AsListStrict","kind":"Normal"},{"name":"AsSet","kind":"Normal"},{"name":"AsSetStrict","kind":"Normal"},{"name":"AsTagged","kind":"Normal"},{"name":"AsTuple","kind":"Normal"},{"name":"AsVariant","kind":"Normal"},{"name":"AssumeNonStrict","kind":"Normal"},{"name":"AssumeStrict","kind":"Normal"},{"name":"AtomCode","kind":"Normal"},{"name":"Avg","kind":"Agg"},{"name":"AvgIf","kind":"Agg"},{"name":"BitAnd","kind":"Agg"},{"name":"BitOr","kind":"Agg"},{"name":"BitXor","kind":"Agg"},{"name":"BlockWardHistogram","kind":"Agg"},{"name":"BlockWardHistogramCDF","kind":"Agg"},{"name":"BlockWeightHistogram","kind":"Agg"},{"name":"BlockWeightHistogramCDF","kind":"Agg"},{"name":"BoolAnd","kind":"Agg"},{"name":"BoolOr","kind":"Agg"},{"name":"BoolXor","kind":"Agg"},{"name":"Bottom","kind":"Agg"},{"name":"BottomBy","kind":"Agg"},{"name":"ByteAt","kind":"Normal"},{"name":"Callable","kind":"Normal"},{"name":"CallableArgument","kind":"Normal"},{"name":"CallableArgumentType","kind":"Normal"},{"name":"CallableResultType","kind":"Normal"},{"name":"CallableType","kind":"Normal"},{"name":"CallableTypeComponents","kind":"Normal"},{"name":"CallableTypeHandle","kind":"Normal"},{"name":"ChooseMembers","kind":"Normal"},{"name":"ClearBit","kind":"Normal"},{"name":"Coalesce","kind":"Normal"},{"name":"CombineMembers","kind":"Normal"},{"name":"Corr","kind":"Agg"},{"name":"Correlation","kind":"Agg"},{"name":"Count","kind":"Agg"},{"name":"CountDistinctEstimate","kind":"Agg"},{"name":"CountIf","kind":"Agg"},{"name":"Covar","kind":"Agg"},{"name":"CovarP","kind":"Agg"},{"name":"CovarPop","kind":"Agg"},{"name":"CovarS","kind":"Agg"},{"name":"CovarSamp","kind":"Agg"},{"name":"Covariance","kind":"Agg"},{"name":"CovariancePopulation","kind":"Agg"},{"name":"CovarianceSample","kind":"Agg"},{"name":"CumeDist","kind":"Window"},{"name":"CurrentAuthenticatedUser","kind":"Normal"},{"name":"CurrentOperationId","kind":"Normal"},{"name":"CurrentOperationSharedId","kind":"Normal"},{"name":"CurrentTzDate","kind":"Normal"},{"name":"CurrentTzDatetime","kind":"Normal"},{"name":"CurrentTzTimestamp","kind":"Normal"},{"name":"CurrentUtcDate","kind":"Normal"},{"name":"CurrentUtcDatetime","kind":"Normal"},{"name":"CurrentUtcTimestamp","kind":"Normal"},{"name":"DataType","kind":"Normal"},{"name":"DataTypeComponents","kind":"Normal"},{"name":"DataTypeHandle","kind":"Normal"},{"name":"DenseRank","kind":"Window"},{"name":"DictAggregate","kind":"Normal"},{"name":"DictContains","kind":"Normal"},{"name":"DictCreate","kind":"Normal"},{"name":"DictHasItems","kind":"Normal"},{"name":"DictItems","kind":"Normal"},{"name":"DictKeyType","kind":"Normal"},{"name":"DictKeys","kind":"Normal"},{"name":"DictLength","kind":"Normal"},{"name":"DictLookup","kind":"Normal"},{"name":"DictPayloadType","kind":"Normal"},{"name":"DictPayloads","kind":"Normal"},{"name":"DictType","kind":"Normal"},{"name":"DictTypeComponents","kind":"Normal"},{"name":"DictTypeHandle","kind":"Normal"},{"name":"DynamicVariant","kind":"Normal"},{"name":"EmptyDict","kind":"Normal"},{"name":"EmptyDictTypehandle","kind":"Normal"},{"name":"EmptyList","kind":"Normal"},{"name":"EmptyListTypeHandle","kind":"Normal"},{"name":"EndsWith","kind":"Normal"},{"name":"Ensure","kind":"Normal"},{"name":"EnsureConvertibleTo","kind":"Normal"},{"name":"EnsureType","kind":"Normal"},{"name":"Enum","kind":"Normal"},{"name":"EvaluateAtom","kind":"Normal"},{"name":"EvaluateCode","kind":"Normal"},{"name":"EvaluateExpr","kind":"Normal"},{"name":"EvaluateType","kind":"Normal"},{"name":"FileContent","kind":"Normal"},{"name":"FilePath","kind":"Normal"},{"name":"Files","kind":"Normal"},{"name":"Find","kind":"Normal"},{"name":"First","kind":"MatchRec"},{"name":"FirstValue","kind":"Window"},{"name":"FlattenMembers","kind":"Normal"},{"name":"FlipBit","kind":"Normal"},{"name":"FolderPath","kind":"Normal"},{"name":"ForceRemoveMember","kind":"Normal"},{"name":"ForceRemoveMembers","kind":"Normal"},{"name":"ForceRenameMembers","kind":"Normal"},{"name":"ForceSpreadMembers","kind":"Normal"},{"name":"FormatCode","kind":"Normal"},{"name":"FormatType","kind":"Normal"},{"name":"FormatTypeDeffPretty","kind":"Normal"},{"name":"FormatTypeDiff","kind":"Normal"},{"name":"FromBytes","kind":"Normal"},{"name":"FromPg","kind":"Normal"},{"name":"FromYsonSimpleType","kind":"Normal"},{"name":"FuncCode","kind":"Normal"},{"name":"GatherMembers","kind":"Normal"},{"name":"GenericType","kind":"Normal"},{"name":"Grouping","kind":"AggKey"},{"name":"HLL","kind":"Agg"},{"name":"Histogram","kind":"Agg"},{"name":"HistogramCDF","kind":"Agg"},{"name":"HopEnd","kind":"Agg"},{"name":"HopStart","kind":"Agg"},{"name":"HyperLogLog","kind":"Agg"},{"name":"If","kind":"Normal"},{"name":"IfStrict","kind":"Normal"},{"name":"IndexOf","kind":"Normal"},{"name":"InstanceOf","kind":"Normal"},{"name":"JoinTableRow","kind":"Normal"},{"name":"Just","kind":"Normal"},{"name":"Lag","kind":"Window"},{"name":"LambdaArgumentsCount","kind":"Normal"},{"name":"LambdaCode","kind":"Normal"},{"name":"LambdaOptionalArgumentsCount","kind":"Normal"},{"name":"Last","kind":"MatchRec"},{"name":"LastValue","kind":"Window"},{"name":"Lead","kind":"Window"},{"name":"Length","kind":"Normal"},{"name":"Likely","kind":"Normal"},{"name":"LinearHistogram","kind":"Agg"},{"name":"LinearHistogramCDF","kind":"Agg"},{"name":"ListAggregate","kind":"Normal"},{"name":"ListAll","kind":"Normal"},{"name":"ListAny","kind":"Normal"},{"name":"ListAvg","kind":"Normal"},{"name":"ListCode","kind":"Normal"},{"name":"ListCollect","kind":"Normal"},{"name":"ListConcat","kind":"Normal"},{"name":"ListCreate","kind":"Normal"},{"name":"ListEnumerate","kind":"Normal"},{"name":"ListExtend","kind":"Normal"},{"name":"ListExtendStrict","kind":"Normal"},{"name":"ListExtract","kind":"Normal"},{"name":"ListFilter","kind":"Normal"},{"name":"ListFlatMap","kind":"Normal"},{"name":"ListFlatten","kind":"Normal"},{"name":"ListFold","kind":"Normal"},{"name":"ListFold1","kind":"Normal"},{"name":"ListFold1Map","kind":"Normal"},{"name":"ListFoldMap","kind":"Normal"},{"name":"ListFromRange","kind":"Normal"},{"name":"ListFromTuple","kind":"Normal"},{"name":"ListHas","kind":"Normal"},{"name":"ListHasItems","kind":"Normal"},{"name":"ListHead","kind":"Normal"},{"name":"ListItemType","kind":"Normal"},{"name":"ListLast","kind":"Normal"},{"name":"ListLength","kind":"Normal"},{"name":"ListMap","kind":"Normal"},{"name":"ListMax","kind":"Normal"},{"name":"ListMin","kind":"Normal"},{"name":"ListNotNull","kind":"Normal"},{"name":"ListReplicate","kind":"Normal"},{"name":"ListReverse","kind":"Normal"},{"name":"ListSample","kind":"Normal"},{"name":"ListSampleN","kind":"Normal"},{"name":"ListShuffle","kind":"Normal"},{"name":"ListSkip","kind":"Normal"},{"name":"ListSkipWhile","kind":"Normal"},{"name":"ListSkipWhileInclusive","kind":"Normal"},{"name":"ListSort","kind":"Normal"},{"name":"ListSortAsc","kind":"Normal"},{"name":"ListSortDesc","kind":"Normal"},{"name":"ListSum","kind":"Normal"},{"name":"ListTake","kind":"Normal"},{"name":"ListTakeWhile","kind":"Normal"},{"name":"ListTakeWhileInclusive","kind":"Normal"},{"name":"ListToTuple","kind":"Normal"},{"name":"ListTop","kind":"Normal"},{"name":"ListTopAsc","kind":"Normal"},{"name":"ListTopDesc","kind":"Normal"},{"name":"ListTopSort","kind":"Normal"},{"name":"ListTopSortAsc","kind":"Normal"},{"name":"ListTopSortDesc","kind":"Normal"},{"name":"ListType","kind":"Normal"},{"name":"ListTypeHandle","kind":"Normal"},{"name":"ListUnionAll","kind":"Normal"},{"name":"ListUniq","kind":"Normal"},{"name":"ListUniqStable","kind":"Normal"},{"name":"ListZip","kind":"Normal"},{"name":"ListZipAll","kind":"Normal"},{"name":"LogHistogram","kind":"Agg"},{"name":"LogHistogramCDF","kind":"Agg"},{"name":"LogarithmicHistogram","kind":"Agg"},{"name":"LogarithmicHistogramCDF","kind":"Agg"},{"name":"Max","kind":"Agg"},{"name":"MaxBy","kind":"Agg"},{"name":"MaxOf","kind":"Normal"},{"name":"Median","kind":"Agg"},{"name":"Min","kind":"Agg"},{"name":"MinBy","kind":"Agg"},{"name":"MinOf","kind":"Normal"},{"name":"Mode","kind":"Agg"},{"name":"NTile","kind":"Window"},{"name":"Nanvl","kind":"Normal"},{"name":"Nothing","kind":"Normal"},{"name":"NthValue","kind":"Window"},{"name":"NullTypeHandle","kind":"Normal"},{"name":"Nvl","kind":"Normal"},{"name":"Opaque","kind":"Normal"},{"name":"OptionalItemType","kind":"Normal"},{"name":"OptionalType","kind":"Normal"},{"name":"OptionalTypeHandle","kind":"Normal"},{"name":"ParseFile","kind":"Normal"},{"name":"ParseType","kind":"Normal"},{"name":"ParseTypeHandle","kind":"Normal"},{"name":"PercentRank","kind":"Window"},{"name":"Percentile","kind":"Agg"},{"name":"PgAnd","kind":"Normal"},{"name":"PgArray","kind":"Normal"},{"name":"PgCall","kind":"Normal"},{"name":"PgCast","kind":"Normal"},{"name":"PgConst","kind":"Normal"},{"name":"PgNot","kind":"Normal"},{"name":"PgOp","kind":"Normal"},{"name":"PgOr","kind":"Normal"},{"name":"PgRangeCall","kind":"Normal"},{"name":"PgType","kind":"Normal"},{"name":"PgTypeHandle","kind":"Normal"},{"name":"PgTypeName","kind":"Normal"},{"name":"Pickle","kind":"Normal"},{"name":"PopulationStdDev","kind":"Agg"},{"name":"PopulationVariance","kind":"Agg"},{"name":"QuoteCode","kind":"Normal"},{"name":"RFind","kind":"Normal"},{"name":"Random","kind":"Normal"},{"name":"RandomNumber","kind":"Normal"},{"name":"RandomUuid","kind":"Normal"},{"name":"Rank","kind":"Window"},{"name":"RemoveMember","kind":"Normal"},{"name":"RemoveMembers","kind":"Normal"},{"name":"RemoveTimezone","kind":"Normal"},{"name":"RenameMembers","kind":"Normal"},{"name":"ReplaceMember","kind":"Normal"},{"name":"ReprCode","kind":"Normal"},{"name":"ResourceType","kind":"Normal"},{"name":"ResourceTypeHandle","kind":"Normal"},{"name":"ResourceTypeTag","kind":"Normal"},{"name":"RowNumber","kind":"Window"},{"name":"SecureParam","kind":"Normal"},{"name":"SessionStart","kind":"Agg"},{"name":"SessionState","kind":"Agg"},{"name":"SessionWindow","kind":"Partition"},{"name":"SetBit","kind":"Normal"},{"name":"SetCreate","kind":"Normal"},{"name":"SetDifference","kind":"Normal"},{"name":"SetIncludes","kind":"Normal"},{"name":"SetIntersection","kind":"Normal"},{"name":"SetIsDisjoint","kind":"Normal"},{"name":"SetSymmetricDifference","kind":"Normal"},{"name":"SetUnion","kind":"Normal"},{"name":"Some","kind":"Agg"},{"name":"SpreadMembers","kind":"Normal"},{"name":"StablePickle","kind":"Normal"},{"name":"StartsWith","kind":"Normal"},{"name":"StaticFold","kind":"Normal"},{"name":"StaticFold1","kind":"Normal"},{"name":"StaticMap","kind":"Normal"},{"name":"StaticZip","kind":"Normal"},{"name":"StdDev","kind":"Agg"},{"name":"StdDevP","kind":"Agg"},{"name":"StdDevPop","kind":"Agg"},{"name":"StdDevPopulation","kind":"Agg"},{"name":"StdDevS","kind":"Agg"},{"name":"StdDevSamp","kind":"Agg"},{"name":"StdDevSample","kind":"Agg"},{"name":"StreamType","kind":"Normal"},{"name":"StreamTypeHandle","kind":"Normal"},{"name":"StructDifference","kind":"Normal"},{"name":"StructIntersection","kind":"Normal"},{"name":"StructMemberType","kind":"Normal"},{"name":"StructMembers","kind":"Normal"},{"name":"StructSymmetricDifference","kind":"Normal"},{"name":"StructTypeComponents","kind":"Normal"},{"name":"StructTypeHandle","kind":"Normal"},{"name":"StructUnion","kind":"Normal"},{"name":"SubqueryAssumeOrderBy","kind":"Normal"},{"name":"SubqueryExtend","kind":"Normal"},{"name":"SubqueryExtendFor","kind":"Normal"},{"name":"SubqueryMerge","kind":"Normal"},{"name":"SubqueryMergeFor","kind":"Normal"},{"name":"SubqueryOrderBy","kind":"Normal"},{"name":"SubqueryUnionAll","kind":"Normal"},{"name":"SubqueryUnionAllFor","kind":"Normal"},{"name":"SubqueryUnionMerge","kind":"Normal"},{"name":"SubqueryUnionMergeFor","kind":"Normal"},{"name":"Substring","kind":"Normal"},{"name":"Sum","kind":"Agg"},{"name":"SumIf","kind":"Agg"},{"name":"SystemMetadata","kind":"Normal"},{"name":"TablePath","kind":"Normal"},{"name":"TableRecordIndex","kind":"Normal"},{"name":"TableRow","kind":"Normal"},{"name":"TableRows","kind":"Produce"},{"name":"TaggedType","kind":"Normal"},{"name":"TaggedTypeComponents","kind":"Normal"},{"name":"TaggedTypeHandle","kind":"Normal"},{"name":"TestBit","kind":"Normal"},{"name":"ToBytes","kind":"Normal"},{"name":"ToDict","kind":"Normal"},{"name":"ToHashedDict","kind":"Normal"},{"name":"ToHashedMultiDict","kind":"Normal"},{"name":"ToMultiDict","kind":"Normal"},{"name":"ToPg","kind":"Normal"},{"name":"ToSet","kind":"Normal"},{"name":"ToSortedDict","kind":"Normal"},{"name":"ToSortedMultiDict","kind":"Normal"},{"name":"Top","kind":"Agg"},{"name":"TopBy","kind":"Agg"},{"name":"TopFreq","kind":"Agg"},{"name":"TryMember","kind":"Normal"},{"name":"TupleElementType","kind":"Normal"},{"name":"TupleType","kind":"Normal"},{"name":"TupleTypeComponents","kind":"Normal"},{"name":"TupleTypeHandle","kind":"Normal"},{"name":"TypeHandle","kind":"Normal"},{"name":"TypeKind","kind":"Normal"},{"name":"TypeOf","kind":"Normal"},{"name":"UDAF","kind":"Agg"},{"name":"UnitType","kind":"Normal"},{"name":"Unpickle","kind":"Normal"},{"name":"Untag","kind":"Normal"},{"name":"Unwrap","kind":"Normal"},{"name":"VarP","kind":"Agg"},{"name":"VarPop","kind":"Agg"},{"name":"VarS","kind":"Agg"},{"name":"VarSamp","kind":"Agg"},{"name":"Variance","kind":"Agg"},{"name":"VariancePopulation","kind":"Agg"},{"name":"VarianceSample","kind":"Agg"},{"name":"Variant","kind":"Normal"},{"name":"VariantItem","kind":"Normal"},{"name":"VariantType","kind":"Normal"},{"name":"VariantTypeHandle","kind":"Normal"},{"name":"VariantUnderlyingType","kind":"Normal"},{"name":"Version","kind":"Normal"},{"name":"Void","kind":"Normal"},{"name":"VoidType","kind":"Normal"},{"name":"VoidTypeHandle","kind":"Normal"},{"name":"Way","kind":"Normal"},{"name":"WeakField","kind":"Normal"},{"name":"WorldCode","kind":"Normal"}]
+[{"name":"Abs","kind":"Normal"},{"name":"AdaptiveDistanceHistogram","kind":"Agg"},{"name":"AdaptiveDistanceHistogramCDF","kind":"Agg"},{"name":"AdaptiveWardHistogram","kind":"Agg"},{"name":"AdaptiveWardHistogramCDF","kind":"Agg"},{"name":"AdaptiveWeightHistogram","kind":"Agg"},{"name":"AdaptiveWeightHistogramCDF","kind":"Agg"},{"name":"AddMember","kind":"Normal"},{"name":"AddTimezone","kind":"Normal"},{"name":"AggList","kind":"Agg"},{"name":"AggListDistinct","kind":"Agg"},{"name":"AggregateFlatten","kind":"Normal"},{"name":"AggregateTransformInput","kind":"Normal"},{"name":"AggregateTransformOutput","kind":"Normal"},{"name":"AsAtom","kind":"Normal"},{"name":"AsDict","kind":"Normal"},{"name":"AsDictStrict","kind":"Normal"},{"name":"AsEnum","kind":"Normal"},{"name":"AsList","kind":"Normal"},{"name":"AsListStrict","kind":"Normal"},{"name":"AsSet","kind":"Normal"},{"name":"AsSetStrict","kind":"Normal"},{"name":"AsTagged","kind":"Normal"},{"name":"AsTuple","kind":"Normal"},{"name":"AsVariant","kind":"Normal"},{"name":"AssumeNonStrict","kind":"Normal"},{"name":"AssumeStrict","kind":"Normal"},{"name":"AtomCode","kind":"Normal"},{"name":"Avg","kind":"Agg"},{"name":"AvgIf","kind":"Agg"},{"name":"BitAnd","kind":"Agg"},{"name":"BitOr","kind":"Agg"},{"name":"BitXor","kind":"Agg"},{"name":"BlockWardHistogram","kind":"Agg"},{"name":"BlockWardHistogramCDF","kind":"Agg"},{"name":"BlockWeightHistogram","kind":"Agg"},{"name":"BlockWeightHistogramCDF","kind":"Agg"},{"name":"BoolAnd","kind":"Agg"},{"name":"BoolOr","kind":"Agg"},{"name":"BoolXor","kind":"Agg"},{"name":"Bottom","kind":"Agg"},{"name":"BottomBy","kind":"Agg"},{"name":"ByteAt","kind":"Normal"},{"name":"Callable","kind":"Normal"},{"name":"CallableArgument","kind":"Normal"},{"name":"CallableArgumentType","kind":"Normal"},{"name":"CallableResultType","kind":"Normal"},{"name":"CallableType","kind":"Normal"},{"name":"CallableTypeComponents","kind":"Normal"},{"name":"CallableTypeHandle","kind":"Normal"},{"name":"ChooseMembers","kind":"Normal"},{"name":"ClearBit","kind":"Normal"},{"name":"Coalesce","kind":"Normal"},{"name":"CombineMembers","kind":"Normal"},{"name":"Corr","kind":"Agg"},{"name":"Correlation","kind":"Agg"},{"name":"Count","kind":"Agg"},{"name":"CountDistinctEstimate","kind":"Agg"},{"name":"CountIf","kind":"Agg"},{"name":"Covar","kind":"Agg"},{"name":"CovarP","kind":"Agg"},{"name":"CovarPop","kind":"Agg"},{"name":"CovarS","kind":"Agg"},{"name":"CovarSamp","kind":"Agg"},{"name":"Covariance","kind":"Agg"},{"name":"CovariancePopulation","kind":"Agg"},{"name":"CovarianceSample","kind":"Agg"},{"name":"CumeDist","kind":"Window"},{"name":"CurrentAuthenticatedUser","kind":"Normal"},{"name":"CurrentLanguageVersion","kind":"Normal"},{"name":"CurrentOperationId","kind":"Normal"},{"name":"CurrentOperationSharedId","kind":"Normal"},{"name":"CurrentTzDate","kind":"Normal"},{"name":"CurrentTzDatetime","kind":"Normal"},{"name":"CurrentTzTimestamp","kind":"Normal"},{"name":"CurrentUtcDate","kind":"Normal"},{"name":"CurrentUtcDatetime","kind":"Normal"},{"name":"CurrentUtcTimestamp","kind":"Normal"},{"name":"DataType","kind":"Normal"},{"name":"DataTypeComponents","kind":"Normal"},{"name":"DataTypeHandle","kind":"Normal"},{"name":"DenseRank","kind":"Window"},{"name":"DictAggregate","kind":"Normal"},{"name":"DictContains","kind":"Normal"},{"name":"DictCreate","kind":"Normal"},{"name":"DictHasItems","kind":"Normal"},{"name":"DictItems","kind":"Normal"},{"name":"DictKeyType","kind":"Normal"},{"name":"DictKeys","kind":"Normal"},{"name":"DictLength","kind":"Normal"},{"name":"DictLookup","kind":"Normal"},{"name":"DictPayloadType","kind":"Normal"},{"name":"DictPayloads","kind":"Normal"},{"name":"DictType","kind":"Normal"},{"name":"DictTypeComponents","kind":"Normal"},{"name":"DictTypeHandle","kind":"Normal"},{"name":"DynamicVariant","kind":"Normal"},{"name":"EmptyDict","kind":"Normal"},{"name":"EmptyDictTypehandle","kind":"Normal"},{"name":"EmptyList","kind":"Normal"},{"name":"EmptyListTypeHandle","kind":"Normal"},{"name":"EndsWith","kind":"Normal"},{"name":"Ensure","kind":"Normal"},{"name":"EnsureConvertibleTo","kind":"Normal"},{"name":"EnsureType","kind":"Normal"},{"name":"Enum","kind":"Normal"},{"name":"EvaluateAtom","kind":"Normal"},{"name":"EvaluateCode","kind":"Normal"},{"name":"EvaluateExpr","kind":"Normal"},{"name":"EvaluateType","kind":"Normal"},{"name":"FileContent","kind":"Normal"},{"name":"FilePath","kind":"Normal"},{"name":"Files","kind":"Normal"},{"name":"Find","kind":"Normal"},{"name":"First","kind":"MatchRec"},{"name":"FirstValue","kind":"Window"},{"name":"FlattenMembers","kind":"Normal"},{"name":"FlipBit","kind":"Normal"},{"name":"FolderPath","kind":"Normal"},{"name":"ForceRemoveMember","kind":"Normal"},{"name":"ForceRemoveMembers","kind":"Normal"},{"name":"ForceRenameMembers","kind":"Normal"},{"name":"ForceSpreadMembers","kind":"Normal"},{"name":"FormatCode","kind":"Normal"},{"name":"FormatType","kind":"Normal"},{"name":"FormatTypeDeffPretty","kind":"Normal"},{"name":"FormatTypeDiff","kind":"Normal"},{"name":"FromBytes","kind":"Normal"},{"name":"FromPg","kind":"Normal"},{"name":"FromYsonSimpleType","kind":"Normal"},{"name":"FuncCode","kind":"Normal"},{"name":"GatherMembers","kind":"Normal"},{"name":"GenericType","kind":"Normal"},{"name":"Grouping","kind":"AggKey"},{"name":"HLL","kind":"Agg"},{"name":"Histogram","kind":"Agg"},{"name":"HistogramCDF","kind":"Agg"},{"name":"HopEnd","kind":"Agg"},{"name":"HopStart","kind":"Agg"},{"name":"HyperLogLog","kind":"Agg"},{"name":"If","kind":"Normal"},{"name":"IfStrict","kind":"Normal"},{"name":"IndexOf","kind":"Normal"},{"name":"InstanceOf","kind":"Normal"},{"name":"JoinTableRow","kind":"Normal"},{"name":"Just","kind":"Normal"},{"name":"Lag","kind":"Window"},{"name":"LambdaArgumentsCount","kind":"Normal"},{"name":"LambdaCode","kind":"Normal"},{"name":"LambdaOptionalArgumentsCount","kind":"Normal"},{"name":"Last","kind":"MatchRec"},{"name":"LastValue","kind":"Window"},{"name":"Lead","kind":"Window"},{"name":"Length","kind":"Normal"},{"name":"Likely","kind":"Normal"},{"name":"LinearHistogram","kind":"Agg"},{"name":"LinearHistogramCDF","kind":"Agg"},{"name":"ListAggregate","kind":"Normal"},{"name":"ListAll","kind":"Normal"},{"name":"ListAny","kind":"Normal"},{"name":"ListAvg","kind":"Normal"},{"name":"ListCode","kind":"Normal"},{"name":"ListCollect","kind":"Normal"},{"name":"ListConcat","kind":"Normal"},{"name":"ListCreate","kind":"Normal"},{"name":"ListEnumerate","kind":"Normal"},{"name":"ListExtend","kind":"Normal"},{"name":"ListExtendStrict","kind":"Normal"},{"name":"ListExtract","kind":"Normal"},{"name":"ListFilter","kind":"Normal"},{"name":"ListFlatMap","kind":"Normal"},{"name":"ListFlatten","kind":"Normal"},{"name":"ListFold","kind":"Normal"},{"name":"ListFold1","kind":"Normal"},{"name":"ListFold1Map","kind":"Normal"},{"name":"ListFoldMap","kind":"Normal"},{"name":"ListFromRange","kind":"Normal"},{"name":"ListFromTuple","kind":"Normal"},{"name":"ListHas","kind":"Normal"},{"name":"ListHasItems","kind":"Normal"},{"name":"ListHead","kind":"Normal"},{"name":"ListItemType","kind":"Normal"},{"name":"ListLast","kind":"Normal"},{"name":"ListLength","kind":"Normal"},{"name":"ListMap","kind":"Normal"},{"name":"ListMax","kind":"Normal"},{"name":"ListMin","kind":"Normal"},{"name":"ListNotNull","kind":"Normal"},{"name":"ListReplicate","kind":"Normal"},{"name":"ListReverse","kind":"Normal"},{"name":"ListSample","kind":"Normal"},{"name":"ListSampleN","kind":"Normal"},{"name":"ListShuffle","kind":"Normal"},{"name":"ListSkip","kind":"Normal"},{"name":"ListSkipWhile","kind":"Normal"},{"name":"ListSkipWhileInclusive","kind":"Normal"},{"name":"ListSort","kind":"Normal"},{"name":"ListSortAsc","kind":"Normal"},{"name":"ListSortDesc","kind":"Normal"},{"name":"ListSum","kind":"Normal"},{"name":"ListTake","kind":"Normal"},{"name":"ListTakeWhile","kind":"Normal"},{"name":"ListTakeWhileInclusive","kind":"Normal"},{"name":"ListToTuple","kind":"Normal"},{"name":"ListTop","kind":"Normal"},{"name":"ListTopAsc","kind":"Normal"},{"name":"ListTopDesc","kind":"Normal"},{"name":"ListTopSort","kind":"Normal"},{"name":"ListTopSortAsc","kind":"Normal"},{"name":"ListTopSortDesc","kind":"Normal"},{"name":"ListType","kind":"Normal"},{"name":"ListTypeHandle","kind":"Normal"},{"name":"ListUnionAll","kind":"Normal"},{"name":"ListUniq","kind":"Normal"},{"name":"ListUniqStable","kind":"Normal"},{"name":"ListZip","kind":"Normal"},{"name":"ListZipAll","kind":"Normal"},{"name":"LogHistogram","kind":"Agg"},{"name":"LogHistogramCDF","kind":"Agg"},{"name":"LogarithmicHistogram","kind":"Agg"},{"name":"LogarithmicHistogramCDF","kind":"Agg"},{"name":"Max","kind":"Agg"},{"name":"MaxBy","kind":"Agg"},{"name":"MaxOf","kind":"Normal"},{"name":"Median","kind":"Agg"},{"name":"Min","kind":"Agg"},{"name":"MinBy","kind":"Agg"},{"name":"MinOf","kind":"Normal"},{"name":"Mode","kind":"Agg"},{"name":"NTile","kind":"Window"},{"name":"Nanvl","kind":"Normal"},{"name":"Nothing","kind":"Normal"},{"name":"NthValue","kind":"Window"},{"name":"NullTypeHandle","kind":"Normal"},{"name":"Nvl","kind":"Normal"},{"name":"Opaque","kind":"Normal"},{"name":"OptionalItemType","kind":"Normal"},{"name":"OptionalType","kind":"Normal"},{"name":"OptionalTypeHandle","kind":"Normal"},{"name":"ParseFile","kind":"Normal"},{"name":"ParseType","kind":"Normal"},{"name":"ParseTypeHandle","kind":"Normal"},{"name":"PercentRank","kind":"Window"},{"name":"Percentile","kind":"Agg"},{"name":"PgAnd","kind":"Normal"},{"name":"PgArray","kind":"Normal"},{"name":"PgCall","kind":"Normal"},{"name":"PgCast","kind":"Normal"},{"name":"PgConst","kind":"Normal"},{"name":"PgNot","kind":"Normal"},{"name":"PgOp","kind":"Normal"},{"name":"PgOr","kind":"Normal"},{"name":"PgRangeCall","kind":"Normal"},{"name":"PgType","kind":"Normal"},{"name":"PgTypeHandle","kind":"Normal"},{"name":"PgTypeName","kind":"Normal"},{"name":"Pickle","kind":"Normal"},{"name":"PopulationStdDev","kind":"Agg"},{"name":"PopulationVariance","kind":"Agg"},{"name":"QuoteCode","kind":"Normal"},{"name":"RFind","kind":"Normal"},{"name":"Random","kind":"Normal"},{"name":"RandomNumber","kind":"Normal"},{"name":"RandomUuid","kind":"Normal"},{"name":"Rank","kind":"Window"},{"name":"RemoveMember","kind":"Normal"},{"name":"RemoveMembers","kind":"Normal"},{"name":"RemoveTimezone","kind":"Normal"},{"name":"RenameMembers","kind":"Normal"},{"name":"ReplaceMember","kind":"Normal"},{"name":"ReprCode","kind":"Normal"},{"name":"ResourceType","kind":"Normal"},{"name":"ResourceTypeHandle","kind":"Normal"},{"name":"ResourceTypeTag","kind":"Normal"},{"name":"RowNumber","kind":"Window"},{"name":"SecureParam","kind":"Normal"},{"name":"SessionStart","kind":"Agg"},{"name":"SessionState","kind":"Agg"},{"name":"SessionWindow","kind":"Partition"},{"name":"SetBit","kind":"Normal"},{"name":"SetCreate","kind":"Normal"},{"name":"SetDifference","kind":"Normal"},{"name":"SetIncludes","kind":"Normal"},{"name":"SetIntersection","kind":"Normal"},{"name":"SetIsDisjoint","kind":"Normal"},{"name":"SetSymmetricDifference","kind":"Normal"},{"name":"SetUnion","kind":"Normal"},{"name":"Some","kind":"Agg"},{"name":"SpreadMembers","kind":"Normal"},{"name":"StablePickle","kind":"Normal"},{"name":"StartsWith","kind":"Normal"},{"name":"StaticFold","kind":"Normal"},{"name":"StaticFold1","kind":"Normal"},{"name":"StaticMap","kind":"Normal"},{"name":"StaticZip","kind":"Normal"},{"name":"StdDev","kind":"Agg"},{"name":"StdDevP","kind":"Agg"},{"name":"StdDevPop","kind":"Agg"},{"name":"StdDevPopulation","kind":"Agg"},{"name":"StdDevS","kind":"Agg"},{"name":"StdDevSamp","kind":"Agg"},{"name":"StdDevSample","kind":"Agg"},{"name":"StreamType","kind":"Normal"},{"name":"StreamTypeHandle","kind":"Normal"},{"name":"StructDifference","kind":"Normal"},{"name":"StructIntersection","kind":"Normal"},{"name":"StructMemberType","kind":"Normal"},{"name":"StructMembers","kind":"Normal"},{"name":"StructSymmetricDifference","kind":"Normal"},{"name":"StructTypeComponents","kind":"Normal"},{"name":"StructTypeHandle","kind":"Normal"},{"name":"StructUnion","kind":"Normal"},{"name":"SubqueryAssumeOrderBy","kind":"Normal"},{"name":"SubqueryExtend","kind":"Normal"},{"name":"SubqueryExtendFor","kind":"Normal"},{"name":"SubqueryMerge","kind":"Normal"},{"name":"SubqueryMergeFor","kind":"Normal"},{"name":"SubqueryOrderBy","kind":"Normal"},{"name":"SubqueryUnionAll","kind":"Normal"},{"name":"SubqueryUnionAllFor","kind":"Normal"},{"name":"SubqueryUnionMerge","kind":"Normal"},{"name":"SubqueryUnionMergeFor","kind":"Normal"},{"name":"Substring","kind":"Normal"},{"name":"Sum","kind":"Agg"},{"name":"SumIf","kind":"Agg"},{"name":"SystemMetadata","kind":"Normal"},{"name":"TablePath","kind":"Normal"},{"name":"TableRecordIndex","kind":"Normal"},{"name":"TableRow","kind":"Normal"},{"name":"TableRows","kind":"Produce"},{"name":"TaggedType","kind":"Normal"},{"name":"TaggedTypeComponents","kind":"Normal"},{"name":"TaggedTypeHandle","kind":"Normal"},{"name":"TestBit","kind":"Normal"},{"name":"ToBytes","kind":"Normal"},{"name":"ToDict","kind":"Normal"},{"name":"ToHashedDict","kind":"Normal"},{"name":"ToHashedMultiDict","kind":"Normal"},{"name":"ToMultiDict","kind":"Normal"},{"name":"ToPg","kind":"Normal"},{"name":"ToSet","kind":"Normal"},{"name":"ToSortedDict","kind":"Normal"},{"name":"ToSortedMultiDict","kind":"Normal"},{"name":"Top","kind":"Agg"},{"name":"TopBy","kind":"Agg"},{"name":"TopFreq","kind":"Agg"},{"name":"TryMember","kind":"Normal"},{"name":"TupleElementType","kind":"Normal"},{"name":"TupleType","kind":"Normal"},{"name":"TupleTypeComponents","kind":"Normal"},{"name":"TupleTypeHandle","kind":"Normal"},{"name":"TypeHandle","kind":"Normal"},{"name":"TypeKind","kind":"Normal"},{"name":"TypeOf","kind":"Normal"},{"name":"UDAF","kind":"Agg"},{"name":"UnitType","kind":"Normal"},{"name":"Unpickle","kind":"Normal"},{"name":"Untag","kind":"Normal"},{"name":"Unwrap","kind":"Normal"},{"name":"VarP","kind":"Agg"},{"name":"VarPop","kind":"Agg"},{"name":"VarS","kind":"Agg"},{"name":"VarSamp","kind":"Agg"},{"name":"Variance","kind":"Agg"},{"name":"VariancePopulation","kind":"Agg"},{"name":"VarianceSample","kind":"Agg"},{"name":"Variant","kind":"Normal"},{"name":"VariantItem","kind":"Normal"},{"name":"VariantType","kind":"Normal"},{"name":"VariantTypeHandle","kind":"Normal"},{"name":"VariantUnderlyingType","kind":"Normal"},{"name":"Version","kind":"Normal"},{"name":"Void","kind":"Normal"},{"name":"VoidType","kind":"Normal"},{"name":"VoidTypeHandle","kind":"Normal"},{"name":"Way","kind":"Normal"},{"name":"WeakField","kind":"Normal"},{"name":"WorldCode","kind":"Normal"}]
diff --git a/yql/essentials/docs/en/builtins/basic.md b/yql/essentials/docs/en/builtins/basic.md
index e14a6de065a..f92a303295d 100644
--- a/yql/essentials/docs/en/builtins/basic.md
+++ b/yql/essentials/docs/en/builtins/basic.md
@@ -369,6 +369,15 @@ SELECT RemoveTimezone(TzDatetime("2018-02-01T12:00:00,Europe/Moscow"));
 SELECT Version();
 ```
 
+## CurrentLanguageVersion {#current-language-version}
+
+`CurrentLanguageVersion()` returns a string describing the current version of the language selected for the current request if it is defined, or an empty string.
+
+#### Examples
+
+```yql
+SELECT CurrentLanguageVersion();
+```
 
 
 ## MAX_OF, MIN_OF, GREATEST, and LEAST {#max-min}
diff --git a/yql/essentials/docs/ru/builtins/basic.md b/yql/essentials/docs/ru/builtins/basic.md
index d7487be818f..83690a3aae0 100644
--- a/yql/essentials/docs/ru/builtins/basic.md
+++ b/yql/essentials/docs/ru/builtins/basic.md
@@ -501,6 +501,16 @@ SELECT RemoveTimezone(TzDatetime("2018-02-01T12:00:00,Europe/Moscow"));
 SELECT Version();
 ```
 
+## CurrentLanguageVersion {#current-language-version}
+
+`CurrentLanguageVersion()` возвращает строку, описывающую текущую версию языка, выбранного для текущего запроса, если она определена, либо пустую строку.
+
+#### Примеры
+
+```yql
+SELECT CurrentLanguageVersion();
+```
+
 
 ## MAX_OF, MIN_OF, GREATEST и LEAST {#max-min}
 
diff --git a/yql/essentials/sql/v1/builtin.cpp b/yql/essentials/sql/v1/builtin.cpp
index d1b5e36c8c1..0a67e6645c1 100644
--- a/yql/essentials/sql/v1/builtin.cpp
+++ b/yql/essentials/sql/v1/builtin.cpp
@@ -3076,6 +3076,7 @@ struct TBuiltinFuncData {
             {"currentoperationid", {"CurrentOperationId", "Normal", BuildNamedArgcBuiltinFactoryCallback<TCallNodeImpl>("CurrentOperationId", 0, 0)}},
             {"currentoperationsharedid", {"CurrentOperationSharedId", "Normal", BuildNamedArgcBuiltinFactoryCallback<TCallNodeImpl>("CurrentOperationSharedId", 0, 0)}},
             {"currentauthenticateduser", {"CurrentAuthenticatedUser", "Normal", BuildNamedArgcBuiltinFactoryCallback<TCallNodeImpl>("CurrentAuthenticatedUser", 0, 0)}},
+            {"currentlanguageversion", {"CurrentLanguageVersion", "Normal", BuildNamedArgcBuiltinFactoryCallback<TCallNodeImpl>("CurrentLanguageVersion", 0, 0)}},
             {"addtimezone", {"AddTimezone", "Normal", BuildSimpleBuiltinFactoryCallback<TYqlAddTimezone>()}},
             {"removetimezone", {"RemoveTimezone", "Normal", BuildNamedArgcBuiltinFactoryCallback<TCallNodeImpl>("RemoveTimezone", 1, 1)}},
             {"pickle", {"Pickle", "Normal", BuildNamedArgcBuiltinFactoryCallback<TCallNodeImpl>("Pickle", 1, 1)}},
diff --git a/yql/essentials/tests/sql/minirun/part4/canondata/result.json b/yql/essentials/tests/sql/minirun/part4/canondata/result.json
index b2ba2b1602e..89da86b38f0 100644
--- a/yql/essentials/tests/sql/minirun/part4/canondata/result.json
+++ b/yql/essentials/tests/sql/minirun/part4/canondata/result.json
@@ -519,16 +519,16 @@
     ],
     "test.test[expr-current_op-default.txt-Debug]": [
         {
-            "checksum": "c514376080191974c8258a19978c0f48",
-            "size": 303,
-            "uri": "https://{canondata_backend}/1130705/84c150c95d2c1a5ae3333b68759e20e3c07850e9/resource.tar.gz#test.test_expr-current_op-default.txt-Debug_/opt.yql"
+            "checksum": "835c25f8a1eced82f952a3a85cbb30c6",
+            "size": 348,
+            "uri": "https://{canondata_backend}/995452/bb7267c9db276bff2bd83cbbbb46f6214f4b395c/resource.tar.gz#test.test_expr-current_op-default.txt-Debug_/opt.yql"
         }
     ],
     "test.test[expr-current_op-default.txt-Results]": [
         {
-            "checksum": "a071d5d303a7a4cafcddef6062ecacc0",
-            "size": 1281,
-            "uri": "https://{canondata_backend}/1130705/84c150c95d2c1a5ae3333b68759e20e3c07850e9/resource.tar.gz#test.test_expr-current_op-default.txt-Results_/results.txt"
+            "checksum": "92bbb10ab985515a637126fa968e3263",
+            "size": 1581,
+            "uri": "https://{canondata_backend}/995452/bb7267c9db276bff2bd83cbbbb46f6214f4b395c/resource.tar.gz#test.test_expr-current_op-default.txt-Results_/results.txt"
         }
     ],
     "test.test[expr-distinct_from-default.txt-Debug]": [
diff --git a/yql/essentials/tests/sql/sql2yql/canondata/result.json b/yql/essentials/tests/sql/sql2yql/canondata/result.json
index 1022b92f85c..a346e609f65 100644
--- a/yql/essentials/tests/sql/sql2yql/canondata/result.json
+++ b/yql/essentials/tests/sql/sql2yql/canondata/result.json
@@ -2542,9 +2542,9 @@
     ],
     "test_sql2yql.test[expr-current_op]": [
         {
-            "checksum": "dad23f292f63f624470a93ca339916d1",
-            "size": 1342,
-            "uri": "https://{canondata_backend}/937458/0263002581044055229fb35127ddc0a0a0025953/resource.tar.gz#test_sql2yql.test_expr-current_op_/sql.yql"
+            "checksum": "a1dc136c7cc38f00c8b50715c89b9656",
+            "size": 1509,
+            "uri": "https://{canondata_backend}/1871182/089a8d1b6980b7434eb00135a8e369216a14ff2a/resource.tar.gz#test_sql2yql.test_expr-current_op_/sql.yql"
         }
     ],
     "test_sql2yql.test[expr-current_tz]": [
diff --git a/yql/essentials/tests/sql/sql2yql/canondata/test_sql_format.test_expr-current_op_/formatted.sql b/yql/essentials/tests/sql/sql2yql/canondata/test_sql_format.test_expr-current_op_/formatted.sql
index 3611ab78c0d..460927ce948 100644
--- a/yql/essentials/tests/sql/sql2yql/canondata/test_sql_format.test_expr-current_op_/formatted.sql
+++ b/yql/essentials/tests/sql/sql2yql/canondata/test_sql_format.test_expr-current_op_/formatted.sql
@@ -1,5 +1,6 @@
 SELECT
     CurrentOperationId(),
     CurrentOperationSharedId(),
-    CurrentAuthenticatedUser()
+    CurrentAuthenticatedUser(),
+    CurrentLanguageVersion()
 ;
diff --git a/yql/essentials/tests/sql/suites/expr/current_op.sql b/yql/essentials/tests/sql/suites/expr/current_op.sql
index 09002c8ca93..eb40bce1374 100644
--- a/yql/essentials/tests/sql/suites/expr/current_op.sql
+++ b/yql/essentials/tests/sql/suites/expr/current_op.sql
@@ -1 +1,2 @@
-select CurrentOperationId(),CurrentOperationSharedId(),CurrentAuthenticatedUser();
+select CurrentOperationId(),CurrentOperationSharedId(),CurrentAuthenticatedUser(),CurrentLanguageVersion();
+