Differences

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--- transformations:lookuprename [2018/01/11 21:17] – dmitry
+++ transformations:lookuprename [2020/02/19 04:18] – dmitry
@@ Line 3: / Line 3: @@
 Category: Transformation / Advanced
-This transformation renames columns in a table looking up old and new column names in another table. It's typically used when names of columns to rename and/or the new names are not known in advance, and have to be obtained dynamically during a calculation.
+This action renames columns in a table looking up old and new column names in another table. It's typically used when names of columns to rename and/or the new names are not known in advance, and have to be obtained dynamically during a calculation, or from a set of known names in a lookup table.
+The lookup table should have 2 columns: old names and new names.
+After the action is applied, columns with old names from the lookup table will be renamed to the new names.
 **See also**
   * [[transformations:selectbylookup|Select columns by lookup]]