Differences

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--- transformations:metadata [2018/01/24 21:33] – created dmitry
+++ transformations:metadata [2020/11/25 18:26] – dmitry
@@ Line 1: / Line 1: @@
 ===== 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
@@ Line 8: / Line 8: @@
 ===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.
+** See also **
+  * [[transformations:projectmetadata|Project metadata]]
+  * [[syntax:functions:columnexists|ColumnExists(text)]]