executed after GROUP BY and HAVING.
NULLS LAST } controls the sorting method of the NULL values (regardless of ASC or DESC). The default NULL order is LAST.
...
]*) ([^ ]*) ([^ ]*) ([^ ]*) (-\\[[^\\]]*\\]) (\".*?\") (-0-9]*) (-0-9]*)Taking the log4j_sample.log file that is generated by Hadoop by default as an example, prepare ...