西里尔字符集和归类用于白俄罗斯语、保加利亚语、俄语、乌克兰语和塞尔维亚语(西里尔语)语言。
cp1251(Windows 西里尔字母)排序规则:cp1251_bincp1251_bulgarian_cicp1251_general_ci(默认)cp1251_general_cscp1251_ukrainian_ci
cp866(DOS 俄语)整理:cp866_bincp866_general_ci(默认)
koi8r(KOI8-R Relcom Russian) 整理:koi8r_binkoi8r_general_ci(默认)
koi8u(KOI8-U 乌克兰语)整理:koi8u_binkoi8u_general_ci(默认)