1.135.3 Get methods

relation_table <-match: pattern=vector -> associations=chain

Return a new chain with rows (vector objects) matching the argument vector. A row is supposed to match iff

1. The vectors have the same range of elements
2. All elements are pairwise equal or the argument vector has @default for each index they are not pairwise equal.

   This method exploits the available indexing relation_table<-tables. See also relation_table<-vectors.

relation_table <-members: -> chain

New chain holding all rows (vector objects). Note that the order of these rows is not defined.

relation_table <-vectors: column=name, value=any -> chain|vector

If name is the name of an indexed column, return the row (vector object) with the specified value in the given column. If the columns is unique a single vector will be returned. Otherwise a chain with matching vectors will be returned. Fails silently if no match can be found.