#### 8.2.55.33 table.semijoin ¶

Method: `[outA, ixA, outB, ixB] =` semijoin `(A, B)` ¶

  Natural semijoin.

  Computes the natural semijoin of tables A and B. The semi-join of tables A and B is the set of all rows in A which have matching rows in B, based on comparing the values of variables with the same names.

  This method also computes the semijoin of B and A, for convenience.

  Returns: outA - all the rows in A with matching row(s) in B ixA - the row indexes into A which produced outA outB - all the rows in B with matching row(s) in A ixB - the row indexes into B which produced outB

  This is a Tablicious/Octave extension, not defined in the Matlab table interface.