日期:2014-05-17 浏览次数:21053 次
SQL> select count(*) from material.materialiohis 2 where barcode = 'A0015'; COUNT(*) ---------- 25
SQL> select count(*) from material.mat_3m_vs_on_way 2 where barcode = 'A0015'; COUNT(*) ---------- 14
SQL> select count(*) from material.materialiohis a, 2 material.mat_3m_vs_on_way b 3 where a.barcode = b.barcode 4 and a.barcode = 'A0015'; COUNT(*) ---------- 350