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transformations:metadata

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transformations:metadata [2018/01/25 02:33]
dmitry created
transformations:metadata [2018/05/24 03:06] (current)
dmitry
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 ===== Table metadata ===== ===== Table metadata =====
  
-This transformation ​obtains various metadata of the current dataset, namely:+This action ​obtains various metadata of the current dataset, namely:
  
   * Total number of columns   * Total number of columns
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 ===Use cases=== ===Use cases===
-Obtaining column names can be helpful in many cases. Together with [[transformations:​lookuprename|Rename with lookup]] and [[transformations:​selectbylookup|Select columns by lookup]] ​transformations ​it allows dealing with datasets which column names are not fixed or not known in advance.+Obtaining column names can be helpful in many cases. Together with [[transformations:​lookuprename|Rename with lookup]] and [[transformations:​selectbylookup|Select columns by lookup]] ​actions ​it allows dealing with datasets which column names are not fixed or not known in advance
 + 
 +It can also be used to obtain the total number of rows, or a list of column names in a table.
transformations/metadata.txt · Last modified: 2018/05/24 03:06 by dmitry