Viiteavaimen rajoitus <var>X</var> taulukosta <var>Y</var> (<var>Z</var>) taulukkoon <var>A</var> (<var>B</var>):

Foreign key constraint '<var>X</var>' from table <var>Y</var> (<var>Z</var>) to table <var>A</var> (<var>B</var>):

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