| --! qt:dataset:src |
| |
| set hive.support.quoted.identifiers=column; |
| |
| |
| ; |
| |
| create table src_b(`x+1` string, `!@#$%^&*()_q` string) |
| clustered by (`!@#$%^&*()_q`) sorted by (`!@#$%^&*()_q`) into 2 buckets |
| ; |
| |
| insert overwrite table src_b |
| select * from src |
| ; |
| |
| create table src_b2(`x+1` string, `!@#$%^&*()_q` string) |
| clustered by (`!@#$%^&*()_q`) sorted by (`!@#$%^&*()_q`) into 2 buckets |
| ; |
| |
| insert overwrite table src_b2 |
| select * from src |
| ; |
| |
| set hive.auto.convert.join=true; |
| set hive.auto.convert.sortmerge.join=true; |
| set hive.optimize.bucketmapjoin = true; |
| set hive.optimize.bucketmapjoin.sortedmerge = true; |
| |
| set hive.auto.convert.sortmerge.join.to.mapjoin=false; |
| set hive.auto.convert.sortmerge.join.bigtable.selection.policy = org.apache.hadoop.hive.ql.optimizer.TableSizeBasedBigTableSelectorForAutoSMJ; |
| -- disable hash joins |
| set hive.auto.convert.join.noconditionaltask.size=1000; |
| |
| explain select a.`x+1`, a.`!@#$%^&*()_q`, b.`x+1`, b.`!@#$%^&*()_q` |
| from src_b a join src_b2 b on a.`!@#$%^&*()_q` = b.`!@#$%^&*()_q` |
| where a.`x+1` < '11' |
| ; |
| select a.`x+1`, a.`!@#$%^&*()_q`, b.`x+1`, b.`!@#$%^&*()_q` |
| from src_b a join src_b2 b on a.`!@#$%^&*()_q` = b.`!@#$%^&*()_q` |
| where a.`x+1` < '11' |
| ; |