兩個(gè)相同的表數(shù)據(jù)結(jié)構(gòu)一樣進(jìn)行sql連接查詢Union的用法
select * from hygxb where hyjb_id>4 and hy_id=53 Union select * from hygxb where hy_gx_id=53 and hy_id=8