要求在下面文件中见说明。谢谢！

b3的字段名和字段数与b1、b2不同，要逐字段比较

CLOSE DATABASES
SELECT * FROM B1 INTO ARRAY AB1
SELECT * FROM B2 INTO ARRAY AB2
USE B3
SELECT B3
BLANK FIELDS _1SM0, _1SM1, _1SM2 ALL
FOR I = 1 TO ALEN(AB1, 1)
    FOR II = 2 TO ALEN(AB1, 2)
        IF NOT EMPTY(AB1[I, II]) AND NOT EMPTY(AB2[I, II])
            REPLACE (LEFT(FIELD(II), 4) + ALLTRIM(STR(II - 2))) WITH FIELD(II) RECORD I
        ENDIF
    ENDFOR
ENDFOR
BROWSE

结果

学习

谢谢，学习了！

sdta真专家，谢谢！