public void setCrossGroupByExpressions(
      final Map<Expression, Set<Expression>> crossGroupByExpressions) {
    this.crossGroupByExpressions = crossGroupByExpressions;
  }
Get all time partition ids and combine adjacent time partition if they belong to same data
region
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/analyze/Analysis.java