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Excel教程:Excel三大男神函数揭秘!他们是谁,为什么这么神?

  • 2026-11-09 05:08:19
Excel教程:Excel三大男神函数揭秘!他们是谁,为什么这么神?

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三大男神函数——LEFT、RIGHT、MID,有了他们,数据提取不再难。

1、函数LEFT

从一个文本字符串的第一个字符开始返回指定个数的字符。

LEFT(文本字符串,[要提取的字符数量])

  • 从左边提取一个字符:

输入公式:=LEFT(A2)

省略了函数LEFT的第二参数,默认为1。

  • 提取文本:

输入公式:

=LEFT(A5,LENB(A5)-LEN(A5))

函数LEN:返回文本字符串中的字符个数。

函数LENB:返回文本字符串中的字节个数。

LENB-LEN算出文本个数,把它作为LEFT函数的第二参数。

2、函数RIGHT

从一个文本字符串的最后一个字符开始返回指定个数的字符。

RIGHT(文本字符串,[要提取的字符数量])

  • 从右边提取一个字符:

输入公式:=RIGHT(A2)

省略了函数RIGHT的第二参数,默认为1。

  • 提取数字:

输入公式:

=RIGHT(A5,2*LEN(A5)-LENB(A5))

2*LEN(A5)-LENB(A5)算出数字个数,把它作为RIGHT函数的第二参数。

3、函数MID

从文本字符串中指定的起始位置起返回指定长度的字符。

MID(文本字符串,从第几个位置开始提取,要提取的字符数量)

  • 提取出生日期:

输入公式:=MID(B2,7,8)

身份证号码的第7-14位为出生年月日

用函数MID从第7位开始提取,提取8位。

  • 提取会计科目明细:

输入公式:

=TRIM(MID(SUBSTITUTE($A2,"-",REPT(" ",99)),COLUMN(A1)*100-99,100))

SUBSTITUTE($A2,"-",REPT(" ",99))部分:将A列会计科目中的“-”替换成99个空格;

COLUMN(A1)*100-99部分:公式向右填充时自动构成序列1,101,201,将它作为MID函数的第二参数,从第几个字符开始提取;

每个字符串至少1个字符,再加上99个空格,所以第三参数可为100;

用函数MID提取后,字符中含有空格,用函数TRIM删除字符串中多余的空格。

  • 提取数字:

输入公式:

=MID(A2,MIN(FIND({0,1,2,3,4,5,6,7,8,9},A2&"0123456789")),2*LEN(A2)-LENB(A2))

FIND({0,1,2,3,4,5,6,7,8,9},A2&"0123456789")部分找到数字0123456789在字符串中出现的位置,返回{8,9,3,11,7,4,6,15,16,17};

用函数MIN取最小数返回3,即第一个出现数字的位置,把它作为MID函数的第二参数;

2*LEN(A2)-LENB(A2)算出要提取的数字个数5,把它作为MID函数的第三参数;

公式就是MID(A2,3,5),返回25.64。

  • 金额多列显示:

输入公式:

=LEFT(RIGHT(" ¥"&$A2*100,12-COLUMN(A1))) ,向右向下填充公式。

$A2*100部分将金额扩大100倍,将0.88变成88;

在提取位数时不足用空格填充,需要显示符号"¥",所以" ¥"&$A2*100,返回" ¥88";

从字符串的右边开始提取,用函数RIGHT;

从分到亿是11位,提取位数为11,10,9…等,用12-COLUMN(A1)来构造;

B2单元格是12-COLUMN(A1)=11,RIGHT部分就是RIGHT(" ¥88",{11}),向右提取11位即8个空格和¥88;

用函数LEFT向左提取,省略第二参数,默认要提取的字符数位1;

所以8个空格逐个被提取到B2:I2单元格;

到J2单元格时,12-COLUMN(I1)=3,RIGHT部分就是RIGHT(" ¥88",{3}),向右提取3位即¥88,用函数LEFT向左提取一位,即J2单元格返回¥;

到K2单元格时,12-COLUMN(J1)=2,RIGHT部分就是RIGHT(" ¥88",{2}),向右提取2位即88,用函数LEFT向左提取一位,即K2单元格返回8;

到L2单元格时,12-COLUMN(K1)=1,RIGHT部分就是RIGHT(" ¥88",{1}),向右提取1位即8,用函数LEFT向左提取一位,即L2单元格返回8。

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  1. CONNECT:[ UseTime:0.000692s ] mysql:host=172.18.0.4;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000997s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000400s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000329s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000598s ]
  6. SELECT * FROM `set` [ RunTime:0.000290s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000551s ]
  8. SELECT * FROM `article` WHERE `id` = 534008 LIMIT 1 [ RunTime:0.000372s ]
  9. UPDATE `article` SET `lasttime` = 1794379595 WHERE `id` = 534008 [ RunTime:0.001484s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000315s ]
  11. SELECT * FROM `article` WHERE `id` < 534008 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000425s ]
  12. SELECT * FROM `article` WHERE `id` > 534008 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000388s ]
  13. SELECT * FROM `article` WHERE `id` < 534008 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.000562s ]
  14. SELECT * FROM `article` WHERE `id` < 534008 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.000546s ]
  15. SELECT * FROM `article` WHERE `id` < 534008 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.000593s ]
0.086005s