查找出 XM 字段中除汉字以外的字符，并替换掉这些字符。
CREATE CURSOR tt (xm c(10),xm1 c(10))
INSERT INTO tt (xm) VALUES ("河南\省")
INSERT INTO tt (xm) VALUES ("河-北省")
INSERT INTO tt (xm) VALUES ("北，22京市")
INSERT INTO tt (xm) VALUES ("上海市")
INSERT INTO tt (xm) VALUES ("西安市")
re = Createobject("VBScript.RegExp")
re.Global = .T.
re.Ignorecase = .T.
re.Pattern = "[^\u4e00-\u9fa5]"
BROWSE FOR xm!=re.replace(xm,"")
REPLACE ALL xm1 WITH re.replace(xm,"")
BROWSE