statement error ^External error: unimplemented_sql/mamfde4rdzgeo: CREATE TABLE with table constraint FOREIGN KEY$
CREATE TABLE myschema.mytable (mycolumn BIGINT, CONSTRAINT myconstraint FOREIGN KEY (mycolumn) REFERENCES foo (bar));

statement error ^External error: unimplemented_sql/mamfde4rdzgeo: CREATE TABLE with table constraint FOREIGN KEY$
CREATE TABLE myschema.mytable (mycolumn BIGINT, FOREIGN KEY (mycolumn) REFERENCES foo (bar));