yuangjiang/flink-sql-lineage

FlinkSQL字段血缘解决方案及源码。FlinkSQL field lineage solution and source code, The core idea is to parse SQL through Calcite to generate a RelNode tree of relational expressions. Then get the optimized logical paln through optimization stage, and finally call Calcite RelMetadataQuery to get the lineage relationship at the field level.

JavaApache-2.0