Search Joins are an approach of enriching a data table with matching columns from a corpus of other data tables. To that end, it combines a search for those tables with the join operator which combines the tables. The search can either be unconstrained to find all kinds of columns, or constrained to specific columns, e.g. only columns containing information about the population of countries.
In the following tables you can find pre-computed examples, for both unconstrained and column constrained queries