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The following page has been changed by RaghothamMurthy:
http://wiki.apache.org/hadoop/Hive/LanguageManual/Select

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  ]
  [LIMIT number]
  }}}
-  * A SELECT statement can be part of a [wiki:Self:Hive/LanguageManual/Union 
union] query or a [wiki:Self:Hive/LanguageManual/SubQuery subquery] of another 
query.
+  * A SELECT statement can be part of a [wiki:Self:Hive/LanguageManual/Union 
union] query or a [wiki:Self:Hive/LanguageManual/SubQueries subquery] of 
another query.
-  * table_reference indicates the input to the query. It can be a regular 
table, a [wiki:Self:Hive/LanguageManual/Joins join construct] or a 
[wiki:Self:Hive/LanguageManual/SubQuery subquery].
+  * table_reference indicates the input to the query. It can be a regular 
table, a [wiki:Self:Hive/LanguageManual/Joins join construct] or a 
[wiki:Self:Hive/LanguageManual/SubQueries subquery].
   * Simple query. For example, the following query retrieves all columns and 
all rows from table t1.
  {{{
  SELECT * FROM t1
@@ -39, +39 @@

      2
  }}}
  
-  * Partition based queries. In general, a SELECT query scans the entire table 
(other than for [wiki:Self:Hive/LanguageManual/Sampling sampling]). If a table 
created using the [wiki:Self:Hive/LanguageManual/DDL PARTITIONED BY] clause, a 
query can do '''input pruning''' and scan only a fraction of the table relevant 
to the query. For example, if table page_views is partitioned on column date, 
the following query retrieves rows for just one day 2008-03-31.
+  * Partition based queries. In general, a SELECT query scans the entire table 
(other than for [wiki:Self:Hive/LanguageManual/Sampling sampling]). If a table 
created using the [wiki:Self:Hive/LanguageManual/DDL PARTITIONED BY] clause, a 
query can do '''input pruning''' and scan only a fraction of the table relevant 
to the query. Hive currently does input pruning only if the partition 
predicates are specified in the WHERE clause closest to the table_reference in 
the FROM clause. For example, if table page_views is partitioned on column 
date, the following query retrieves rows for just one day 2008-03-31.
  {{{
      SELECT page_views.* 
      FROM page_views 

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