Dashboards: Fix query in Data Analysis dashboard

Similar to the issue fixed by #487, there is a missmatch in the
"Database summary" panel, as it uses data_uncompressed_bytes in the
outer query (this seems to be the wanted columns, as it is defined in
the "Organize fields by name" transformation) but uses
data_compressed_bytes in the inner query, causing an error.

This PR sets the right column in the inner query and fixes #803

src/dashboards/data-analysis.json

@@ -1093,7 +1093,7 @@
             }
           },
           "queryType": "sql",
-          "rawSql": "SELECT name,\n       engine,\n       tables,\n       partitions,\n       parts,\n       formatReadableSize(bytes_on_disk)            \"disk_size\",\n       col_count,\n       total_rows,\n       formatReadableSize(data_uncompressed_bytes) as \"uncompressed_size\"\nFROM system.databases db\n         LEFT JOIN ( SELECT database,\n                            uniq(table)                   \"tables\",\n                            uniq(table, partition)        \"partitions\",\n                            count()                    AS parts,\n                            sum(bytes_on_disk)            \"bytes_on_disk\",\n                            sum(data_compressed_bytes) as \"data_compressed_bytes\",\n                            sum(rows) as total_rows,\n                            max(col_count) as \"col_count\"\n                     FROM system.parts AS parts\n                               JOIN (SELECT database, count() as col_count\n                                         FROM system.columns\n                                         WHERE database IN (${database}) AND table IN (${table})\n                                         GROUP BY database) as col_stats\n                                        ON parts.database = col_stats.database\n                     WHERE database IN (${database}) AND active AND table IN (${table})\n                     GROUP BY database) AS db_stats ON db.name = db_stats.database\nWHERE database IN (${database}) AND lower(name) != 'information_schema'\nORDER BY bytes_on_disk DESC\nLIMIT 10;",
+          "rawSql": "SELECT name,\n       engine,\n       tables,\n       partitions,\n       parts,\n       formatReadableSize(bytes_on_disk)            \"disk_size\",\n       col_count,\n       total_rows,\n       formatReadableSize(data_uncompressed_bytes) as \"uncompressed_size\"\nFROM system.databases db\n         LEFT JOIN ( SELECT database,\n                            uniq(table)                   \"tables\",\n                            uniq(table, partition)        \"partitions\",\n                            count()                    AS parts,\n                            sum(bytes_on_disk)            \"bytes_on_disk\",\n                            sum(data_uncompressed_bytes) as \"data_uncompressed_bytes\",\n                            sum(rows) as total_rows,\n                            max(col_count) as \"col_count\"\n                     FROM system.parts AS parts\n                               JOIN (SELECT database, count() as col_count\n                                         FROM system.columns\n                                         WHERE database IN (${database}) AND table IN (${table})\n                                         GROUP BY database) as col_stats\n                                        ON parts.database = col_stats.database\n                     WHERE database IN (${database}) AND active AND table IN (${table})\n                     GROUP BY database) AS db_stats ON db.name = db_stats.database\nWHERE database IN (${database}) AND lower(name) != 'information_schema'\nORDER BY bytes_on_disk DESC\nLIMIT 10;",
           "refId": "A"
         }
       ],