The Select functions enable quick selection of multiple or individual tables directly from the data source, or to filter a specified table by a given number of rows:
Query: write custom SQL or SOQL queries against an SQL datasource.
Table: connect a single table to a data source node. Multiple Table nodes may be connected to the source node, with each Table node representing a single table.
MultiTables: use a multi-select function to connect a single Tables node, representing multiple tables.
BottomN: filter a given table by the bottom n number of rows.
TopN: filter a given table by the top n number of rows.