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From Apache Wiki <wikidi...@apache.org>
Subject [Lucene-hadoop Wiki] Trivial Update of "Hbase/HbaseShell" by udanax
Date Sun, 13 Jan 2008 08:07:48 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Lucene-hadoop Wiki" for change notification.

The following page has been changed by udanax:
http://wiki.apache.org/lucene-hadoop/Hbase/HbaseShell

The comment on the change is:
COUNT() added.

------------------------------------------------------------------------------
  ||<bgcolor="#ececec">'''Command''' ||<bgcolor="#ececec">'''Explanation''' ||
  ||Insert ||<99%>'''Insert''' command inserts one row into the table with a value for
specified column in the table.[[BR]][[BR]]~-''INSERT INTO table_name (colmn_name, ...)[[BR]]{{{
   }}}VALUES ('value', ...)[[BR]]{{{    }}}WHERE row = 'row-key'[[BR]]{{{    }}}[TIMESTAMP
'timestamp'];''-~ ||
  ||Delete ||'''Delete''' command deletes specified rows in table. [[BR]][[BR]]~-''DELETE
{ column_name, [, column_name] ... | COLUMNFAMILIES(column_family[, column_family] ... | *}
[[BR]]{{{    }}}FROM table_name[[BR]]{{{    }}}[WHERE row = 'row-key'];''-~ ||
- ||Select ||<99%>'''Select''' command retrieves rows from a table.[[BR]][[BR]]~-''SELECT
{ column_name [, column_name] ... | * }[[BR]]{{{    }}}FROM table_name[[BR]]{{{    }}}[WHERE
row = 'row-key' | STARTING FROM 'row-key' [UNTIL 'stop-key']][[BR]]{{{    }}}[NUM_VERSIONS
= version_count][[BR]]{{{    }}}[TIMESTAMP 'timestamp'][[BR]]{{{    }}}[LIMIT = row_count][[BR]]{{{
   }}}[INTO FILE 'file_name'][[BR]][[BR]]''-~'''column_name:'''~-''[[BR]]{{{     }}}column_family_name[[BR]]{{{
   }}}| column_family_name:column_label_name''-~ ||
+ ||Select ||<99%>'''Select''' command retrieves rows from a table.[[BR]]Several aggregate
operators: COUNT()[[BR]][[BR]]~-''SELECT { column_name [, column_name] ... | expr[alias] |
* }[[BR]]{{{    }}}FROM table_name[[BR]]{{{    }}}[WHERE row = 'row-key' | STARTING FROM 'row-key'
[UNTIL 'stop-key']][[BR]]{{{    }}}[NUM_VERSIONS = version_count][[BR]]{{{    }}}[TIMESTAMP
'timestamp'][[BR]]{{{    }}}[LIMIT = row_count][[BR]]{{{    }}}[INTO FILE 'file_name'][[BR]][[BR]]''-~'''column_name:'''~-''[[BR]]{{{
    }}}column_family_name[[BR]]{{{    }}}| column_family_name:column_label_name''-~ ||
  
  = Examples =
  == Example Of Basic Query Command Uses ==
@@ -103, +103 @@

  SELECT    Select values from tables
  
  Syntax:
- SELECT { column_name, [, column_name] ... | *} FROM table_name
+ SELECT { column_name, [, column_name] ... | expr[alias] | *} FROM table_name
          [WHERE row='row_key' | STARTING FROM 'row-key' [UNTIL 'stop-key']]
          [NUM_VERSIONS = version_count]
          [TIMESTAMP 'timestamp']
@@ -121, +121 @@

  {{{
  hql > SELECT studioName: FROM movieLog_table WHERE row = 'Star Wars';
  
- +---------------------------------------------+
+ +----------------------------+
- | title         studioName                    |
+ | title         studioName   |
- | =========================================== |
+ | ========================== |
- | Star Wars     Fox Entertainment Group, Inc. |
+ | Star Wars     Fox          |
- +---------------------------------------------+
+ +----------------------------+
  
  Successfully print out the selected data.(0.05 sec)
  
- hql > SELECT 'studioName:YoungGu Art, Corp.' FROM movieLog_table WHERE row = 'D-War';
+ hql > SELECT count(studioName:Fox) FROM movieLog_table;
  }}}
  
  === Insert data into a table ===

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