Կ(lin)W(wng)֪Rc(din)
2017Կ(lin)W(wng)֪Rc(din)}Ļ
(1)ۼھۼӋMr(sh)gڔ}г@ЩӋY(sh)ҕD(li)һӋɹʹSQLṩNۼSUM,COUNT,AVG,MAX,MIN.
(2)w(sh)ǂ(g)Sÿ(g)ԪMöSgһ(g)c(din)ԪʾwƏVSOSktkSwɱʾ2(g)(sh)ҕDڴwĻAM(jn)ƬЉKijһ(g)SȞ˜wM(jn)иIJ
(3)Ͼ̽Ӌۼr(sh)ֽMдּ֮ɼȷֽMľۼcP(gun)ĴȷֽMľۼ֮tϾɼȷֽMľۼȷֽM^(gu)̽Ͼͨ^(gu)Sԃ(xn)^ԔĔ̽cϾͬϾr(sh)ɼȵČ(sh)ҕDƌȵČ(sh)ҕDϲԃ(xn)ҿڏĴȌ(sh)ҕDƌҕDͨ^(gu)̽ɴֵɌ(sh)ҕD@ЩȵČ(sh)ҕDѽ(jng)ͨ^(gu)̽²ԃ(xn)
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