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spanner_core (347B)

      1 # Spanner core
      2 
      3 [regex_formula]s extended with [projection], [union], [join], and [string_equality_selection]
      4 
      5 Other way to see it: [query] over the result of [spanner]s
      6 ([freydenberger2018joining] / [peterfreund2019complexity])
      7 
      8 Extension: [generalized_core_spanner]
      9 
     10 See also: [refl_spanner]
     11 
     12 Up: [spanner]
     13 
     14 Aliases: core spanner, core spanners