Excel basis (b): Excel formula functions

0. Excel formula functions Introduction

Many functions can be built Excel formulas to complete numerical function, logic determining function, find a match function, the function formulas used in routine data processing and analysis reports to improve the working efficiency.

1. Logic Function

• IF
  features: Analyzing conditions, to perform operations to perform operations a two o'clock, the condition is not satisfied when the condition is satisfied. if the following function may be combined and, or, not determination conditions

  IF(logical_test,[value_if_true],[value_if_false])

• AND
  Function: a logical AND operation, returns True when all conditions are true is determined, otherwise returns False

  AND(logical1,[logical2]...)

• OR
  function: a logical OR operation, when the judgment condition returns True, there is established a certain, otherwise returns False

  OR(logical1,[logical2]...)

• NOT
  function: logical NOT operator, i.e., inverted Boolean

  NOT(logical)

  2. Find function

• match
  Function: Returns the value of the relative position of a particular order to meet specific item in the array

  MATCH(lookup_value,lookup_array,[match_type])

  Find a location where Shanghai
  

  MATCH("上海",C2:C14)        # 结果返回3

• index
  function: in a given range of cells, the cell returns the value of the index value according to the ranks

  index(array,row_num,[col_num]

  Find the table row 2 2

  =INDEX(A2:C14,2,2)        # 返回菲亚特

• lookup
  Function: a value from a lookup array or vector

  lookup(lookup_value,array)
  lookup(lookup_value,lookup_vector)

  Find Sales Lee Ling sells brand

  LOOKUP("李乐菱",A2:B14)        # 返回宝马

• vlookup
  Function: the first column received search table area elements satisfy a condition determined row number of cells to be searched, and then returns the corresponding value

  vlookup(lookup_value,table_array,row_index_num,[range_lookup])

  Winnings are calculated based on sales
  
  

  VLOOKUP(A2,$D$7:$E$18,2)*A2        # 返回219.3

  Winnings are calculated results are as follows
  

• hlookup
  Function: the first column received search table area element satisfying the condition, determines the column number of cells to be searched, and then returns the corresponding value

  hlookup(lookup_value,table_array,row_index_num,[range_lookup])

  Winnings are calculated results are as follows
  

  3. Statistical Functions

• sum
  Function: summing
  * sumif
  Function: Conditional Sum
  calculate the sales greater than the sum of sales 5000

  SUMIF(A2:A6,">5000")         # 返回8052

• sumifs
  功能：多条件求和
  计算销售额在3000-5000之间的销售额总和

  SUMIFS(A2:A6,A2:A6,">3000",A2:A6,"<5000")        # 返回12272

• average
  功能：求平均值
• max
  功能：计算最大值
• min
  功能：计算最小值
• count
  功能：计数
• countif
  功能：条件计数
  计数上面销售额大于5000

  COUNTIF(A2:A6,">5000")        # 返回1

• countifs
  功能：多条件计数
  计数销售额在3000-5000之间

  COUNTIFS(A2:A6,">3000",A2:A6,"<5000")        # 返回3

• rank
  功能：返回某一数值相对于其他数字的排名

  rank(number,ref,[order])

4. 引用函数

• indirect
  功能：返回文本字符串指定的引用

  INDIRECT(ref_text,[a1])

  制作全国地区和省份两级下拉菜单
  （1）地区字段设置数据认证
  
  （2）省份字段数据认证
  

最后效果如下

5. 数学函数

• round
  功能：按照指定的位数进行四舍五入

  round(number,num_digits)

  例如将圆周率取2位有效数值

  ROUND(3.141592653,2)        # 返回3.14

• roundup
  功能：向上舍入数字

  roundup(number)

• rounddown
  功能：向下舍入数字

  rounddown(number)

• int
  功能：向下取整

  int(number)

• trunc
  功能：将数字截为整数或指定位数小数

  trunc(number,[num_digits])

  6. 文本函数

• find
  功能：查找字符在单元格中的位置，返回位置索引

  find(find_text,within_text,[start_num])
  start_num：开始查找文本的编号

  对于地址"江苏省南京市宣武区新街口街道"需要提取省份信息，可以使用如下公式实现

  =LEFT("江苏省南京市玄武区新街口街道",FIND("省","江苏省南京市玄武区新街口街道"))

• left
  Function: extracting a plurality of lengthwise text from left cell

  left(text,[num_chars])
  num_chars：提取字符个数，默认提取一个字符

  Department above for the extraction of information can be directly used

  LEFT("江苏省南京市玄武区新街口街道",3)

  Above to find the location using the find "province" appears, and then left the provinces to find information. Such operations have general, not more than some provinces are generally more words, such as Heilongjiang, you need to extract the number of characters is 4

• right
  functions: extracting a plurality of lengthwise text from the right side of the cell

  right(text,[num_chars])
  num_chars：提取字符个数，默认提取一个字符

  Also at the above address information, for example, the need to extract street information, you can use the formula

  RIGHT("江苏省南京市玄武区新街口街道",LEN("江苏省南京市玄武区新街口街道")-FIND("区","江苏省南京市玄武区新街口街道"))

• trim
  function: for the spaces before the cell content is removed, but without removing the space between characters

  trim(text)

• concatenate
  function: string concatenation

  concatenate(text1,text2...)

• upper
  Function: lowercase letters converted to uppercase letters

  upper(text)

• lower
  function: uppercase letters converted to lowercase letters

  lower(text)

• replace
  features: a partial string in the string is replaced with another string

  replace(old_text,start_num,num_chars,new_text)

  For example, "Xinjiekou Street, Xuanwu District, Nanjing, Jiangsu Province" in "Xinjiekou Street" with "Xuanwu Lake Street"

  =REPLACE("江苏省南京市玄武区新街口街道",FIND("区","江苏省南京市玄武区新街口街道")+1,LEN("江苏省南京市玄武区新街口街道")-FIND("区","江苏省南京市玄武区新街口街道"),"玄武门街道")

• substitute
  Function: a character string in the character string is replaced with a new string portion

  substitute(text,old_text,new_text,[instance_num]
  instance_num：指明替换数目，默认全部替换

  For example, the "China - Beijing - Beijing area" with "China - Shanghai - Shanghai area", the formula is

  SUBSTITUTE("中国-北京-北京市区","北京","上海")

• clean
  function: delete text in all non-printable characters

  clean(text)