fix: wrong index in cell_at() of JoinTuple and redundant species when calling open() repeatedly

THSS-DB / TDB

Educational Database Management System for Software School of Tsinghua University

Mulan Permissive Software License, Version 2

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fix: wrong index in cell_at() of JoinTuple and redundant species when calling open() repeatedly #16

Closed GuoKaku closed 4 months ago

GuoKaku commented 4 months ago

bug 1: join tuple cannot be visited by cell_at() at position 0 bug 2: row tuple's schema will be double or triple initialized when trying to reopen table scanner