Excel-1

1、Excel Skill system of

Starting from the business process , Use Excel It's roughly divided into Data entry and sorting 、 Data processing 、 PivotTable and data presentation 4 A link .

Specific steps ：
1、 First, you need to put the data entry To Excel in , And put these raw data Arrangement For the format we need . adopt Data processing , We can perform statistical calculation on the source data , And extract the data we care about , For the next step Data analysis To prepare .
2、 Analyze the processed data , Existing problems can be found from the data , Make effective decisions . After the above work is completed , We can still use it Data presentation Transform the data information obtained from the analysis into more intuitive images such as charts , Let others understand the results of your work .

2、 Auto fill

Filling handle Refers to the small green square in the lower right corner of the cell , Double click the fill handle or drag the fill handle , Can realize the function of automatic filling ,Excel It can not only fill the text content , It can also automatically fill in functions . Double click the fill handle , The text content will be automatically filled in the last row of the data table .

3、 PivotTable

PivotTable is a powerful tool to help us analyze data , stay Insert Click PivotTable in the tab , Select a new worksheet Click OK again , Drag the field to be analyzed to Screening / That's ok / Column / value In the region , You can insert a PivotTable

4、TEXTJOIN function

TEXTJOIN Function is a text processing function , When using functions , The first parameter is the connector , The second parameter is used to specify whether to ignore empty cells when splicing ,TRUE To ignore ,FALSE For the sake of reservation , Next is the content that needs to be spliced ,TEXTJOIN Will use connectors to splice these contents together in order from left to right .

The first parameter is the connector , The connector needs to be enclosed in English double quotation marks , The contents in double quotation marks are empty , It means to put the texts that need to be spliced directly together , Don't separate them with any characters .

The second parameter is used to specify whether to ignore empty cells when splicing ,TRUE To ignore ,FALSE For the sake of reservation .

=TEXTJOIN(“”, TRUE, “ prohibit ”, A2) This instruction will put the text “ prohibit ” And cells A2 Spliced together in sequence . therefore ,A3 The content of is in A2 prefix “ prohibit ” These two words . Or spell the connection as shown in the figure below .

5、 Id card

Calculate the age

From the ID number 7 The number of digits starts with age , Then the first thing we need to do is to put this age “ extract ” come out , Next , We only need to subtract the year of birth from the year of this year to get the age of employees .

5.1 MID function

MID Function is mainly used for character extraction , It can come from Specified string Medium The specified location extract Specified number The characters of .

MID Function function ： Extract a certain number of characters from the specified position in the specified string . therefore , If we want to extract the birth year of the first employee, Kevin, into the cell D2 in , We can go to D2 Enter... In the cell =MID(B2, 7, 4)

The final age calculation formula is ：

5.2 YEAR Functions and NOW function

NOW Function can get the current time and date ,YEAR Function can extract the year from the date

NOW The function returns the current date and time , The method of use is to enter =NOW();
YEAR The function extracts the year in the date , coordination NOW Function to get the current year

Subtract the current year from the year of birth , towards K2 Enter... In the cell
=YEAR(NOW())-MID(B2, 7, 4)

6、COUNTIF function

COUNTIF The function Count the total number of times a certain text appears in the specified area , It supports single region search 、 Multi region search , Even cross table lookup