hive> set hive.mapred.mode=strict;
hive> select * from test order by id;
FAILED: SemanticException 1:28 In strict mode, if ORDER BY is specified, LIMIT must also be specified. Error encountered near token 'id'例子：hive> set hive.mapred.mode=unstrict;
hive> select * from test order BY id ;
MapReduce Jobs Launched:
Job 0: Map: 1  Reduce: 1   Cumulative CPU: 1.88 sec   HDFS Read: 305 HDFS Write: 32 SUCCESS
Total MapReduce CPU Time Spent: 1 seconds 880 msec
OK
1   a
1   a
2   b
2   b
3   c
3   c
4   d
4   d
Time taken: 24.609 seconds, Fetched: 8 row(s)

hive> set mapred.reduce.tasks=3;
hive> select * from test sort BY id ;
MapReduce Jobs Launched:
Job 0: Map: 1  Reduce: 3   Cumulative CPU: 4.48 sec   HDFS Read: 305 HDFS Write: 32 SUCCESS
Total MapReduce CPU Time Spent: 4 seconds 480 msec
OK
1   a
2   b
3   c
4   d
2   b
3   c
4   d
1   a
Time taken: 29.574 seconds, Fetched: 8 row(s)

hive> select * from test distribute BY id sort by id asc;
Job 0: Map: 1  Reduce: 3   Cumulative CPU: 4.24 sec   HDFS Read: 305 HDFS Write: 32 SUCCESS
Total MapReduce CPU Time Spent: 4 seconds 240 msec
OK
3   c
3   c
1   a
1   a
4   d
4   d
2   b
2   b
Time taken: 29.89 seconds, Fetched: 8 row(s)

hive> select * from test cluster by id asc;
FAILED: ParseException line 1:33 extraneous input 'asc' expecting EOF near '<EOF>'hive> select * from test cluster by id ;
MapReduce Jobs Launched:
Job 0: Map: 1  Reduce: 3   Cumulative CPU: 4.58 sec   HDFS Read: 305 HDFS Write: 32 SUCCESS
Total MapReduce CPU Time Spent: 4 seconds 580 msec
OK
3   c
3   c
1   a
1   a
4   d
4   d
2   b
2   b
Time taken: 30.646 seconds, Fetched: 8 row(s)

hive> select a.* from (select * from test cluster by id ) a order by a.id ;
MapReduce Jobs Launched:
Job 0: Map: 1  Reduce: 3   Cumulative CPU: 4.5 sec   HDFS Read: 305 HDFS Write: 448 SUCCESS
Job 1: Map: 1  Reduce: 1   Cumulative CPU: 1.96 sec   HDFS Read: 1232 HDFS Write: 32 SUCCESS
Total MapReduce CPU Time Spent: 6 seconds 460 msec
OK
1   a
1   a
2   b
2   b
3   c
3   c
4   d
4   d
Time taken: 118.261 seconds, Fetched: 8 row(s)