@Override
      protected List<SQLPrimaryKey> getSqlResult(GetHelper<List<SQLPrimaryKey>> ctx) throws MetaException {
        return directSql.getPrimaryKeys(catName, dbName, tblName);
      }
Get partition's column stats

@return Map of column name and its stats
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/ObjectStore.java