SQL中如何求和?答:select sum(A),sum(B),sum(C),sum(D),sum(E),sum(F),sum(G) from 表名 横向汇总的SQL语句是: select A,B,C,D,E,F,G,A+B+C+D+E+F+G from 表名 求所有数据总和的SQL语句是:select sum(A)+sum(B)+sum(C)+sum(D)+sum(E)+sum(F)+sum(G) from 表名 ...
sql语句求和答:selectsum(A),sum(B),sum(C),sum(D),sum(E),sum(F),sum(G)from表名 横向汇总的SQL语句是:selectA,B,C,D,E,F,G,A+B+C+D+E+F+Gfrom表名 求所有数据总和的SQL语句是:selectsum(A)+sum(B)+sum(C)+sum(D)+sum(E)+sum(F)+sum(G)from表名 结构化查询语言是高级的非过程化...