Github user ravipesala commented on a diff in the pull request:
https://github.com/apache/carbondata/pull/1425#discussion_r146163472
--- Diff: format/src/main/thrift/schema.thrift ---
@@ -165,9 +165,46 @@ struct TableSchema{
4: optional map<string,string> tableProperties; // Table properties
configured by the user
5: optional BucketingInfo bucketingInfo; // Bucketing information
6: optional PartitionInfo partitionInfo; // Partition information
+ 7: optional list<ColumnRelation> columnRelationList;
}
+struct RelationIdentifier {
+ 1: optional string databaseName;
+ 2: required string tableName;
+ 3: required string tableId;
+}
+
+struct ColumnRelation{
+ // child column id
+ 1: required string columnId;
+ 2: optional list<ParentColumnTableRelation> columnTableRelation;
+}
+
+struct ParentColumnTableRelation {
+ 1: required RelationIdentifier relationInfo;
+ 2: required string columnId;
+ 3: required string columnName
+}
+
+enum RelationType {
+ AGGREGATION = 0;
+}
+struct RelationProperties {
+ 1: optional RelationType relationTypes;
+ // to maintain properties like select query, query type like groupby,
join
+ 2: optional map<string, string> properties;
+}
+
+struct ChildSchema {
+ 1: required RelationIdentifier relationInfo;
+ 2: required TableSchema childTableSchema;
+ 3: optional RelationProperties relationProperties;
+}
struct TableInfo{
1: required TableSchema fact_table;
2: required list<TableSchema> aggregate_table_list;
+ 3: optional list<ChildSchema> childSchemas; // childSchema information
+ // only in case of child table it will be filled to maintain the relation
with parent tables
+ // to hanle operation like drop in that case parent table will be also
updated
+ 4: optional list<RelationIdentifier> parentRelationInfo;
--- End diff --
not required again
---
