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spanner_expressiveness (344B)

      1 # Spanner expressiveness
      2 
      3 - [regex_formulas] are strict subset of [variable_set_automata] (hierarchical)
      4 - when adding [relational_algebra]:
      5   - they become equal
      6   - for automata, adding [relational_algebra] makes no difference
      7 - adding [string_equality]: [freydenberger2016document]
      8 
      9 Up: [spanner], [expressiveness]
     10 
     11 See also: [core_spanner]