Jimureport building block report - expression introduction

Preface ： We often use expressions in report design , As in the excel The same formula used in , With expressions, our report design will get twice the result with half the effort .

What expressions does the building block report contain ？

The building block report perfects the original expression , On the basis of the original , Extended dataset expression 、 Cell expression 、 Statistical function 、 Line number function 、 Date function 、 Mathematical functions 、 String function 、 Conditional expression 、 Color expression 、 Judgment function , Basic operator functions and system functions . Let's take a look at which expressions are included and their usage .

1. Dataset functions

The dataset function contains sum( Sum up )、average( averaging )、max( For maximum )、min( For the minimum ) And basic operators （+-*/）

Example ： With sum For example

• =sum(#{jm.money},#{jm.extend_money}) You can sum multiple columns

#{jm.money} # Represents a dataset jm It's a collection

${jm.money} $ Represents a dataset jm It's an object （ Single data ）

2. Cell functions

Cell functions also contain ：sum( Sum up )、average( averaging )、max( For maximum )、min( For the minimum ) And basic operators （+-*/）

Example ： With sum For example

• =sum(C6) Yes C6 Cell summation , If C6 A cell is an expression such as ${db.count}, Sum all data looped out of the page expression
• =sum(A6,C6) Yes A6 and C6 Cell summation
• =sum(A6:C6) Yes A6 To C6 Cell summation

3. Statistical function

The statistical function contains dbsum( Sum up )、dbmax( For maximum )、dbmin( For the minimum )、dbaverage ( averaging )

Is to specify a field for a specified dataset , Calculate all data in this field

for example dbsum contrast sum Function difference ：dbsum Statistics set all data ,sum Only current page data is supported

Example With dbsum For example

• =dbsum(jm.money)

4. Line number function

Line number function ： Self incrementing sequence number is realized through line number function

Example ：

• =row()
• Multiple lists require line numbers , You need to set a number Parameter distinguishing counter, e.g ：=row(1) =row(2)

5. Date function

The date function contains date( Get date )、time( Get time, minutes, seconds )、year( Year of acquisition )、month( Get the month )、day( Get days )、now( Gets the long integer value of the current time )、nowstr( Get the current time string )

Example ： With date For example

• =date("1982-08-09") Return date ：1982-08-09 00:00:00
• =date("1982-08-09 10:20:30") Return date ：1982-08-09 00:00:00
• aggregate ：=date('#{jm.create_time}')
• object ：=date('${jm.create_time}')
• Cell ：=date(A1)

6. Mathematical functions

The mathematical function contains rand( Get random numbers )、round( rounding )、abs( Take the absolute value )、floor( integer )、ceil( integer )、trunc( integer )

Example ： With round For example

• =round(3451251.274,0)
• =round(#{db.salary}, 2)

7. String function

The string function contains char(unicode Code or ascii Encoding conversion )、cnmoney( Conversion of amount in words )、concat( String splicing )、lower( Turn lowercase )、upper( Turn capitalization )、date_str( Date to string )

Example ： With cnmoney For example

• =cnmoney(1.232) return ： One yuan and twenty-three cents
• aggregate ：=cnmoney(#{jm.money})
• object ：=cnmoney(${jm.money})
• Cell ：=cnmoney(A1)

8. Conditional expression

Conditional expressions are used to make conditional judgments on data , contain case、if

Example ：

• =case('#{dd.sex}'=='1',' male ',' Woman ')
• =case(1==1,1,2) ->1
• =(let sex= '#{dd.sex}'; if(sex== '1'){ ' male ' }elsif(sex== '2'){ ' Woman ' }else{ ' Unknown ' })
• =(if(A1==1){return (A1+B1)*200;})

9. Color expression

The color expression contains ：color( Cell font / The background color )、=rowcolor( Whole line font / The background color )

Example ： With color For example

• aggregate ：=color('#{jm.salse}','#ffffff','#171516')
• object ：=color('${jm.salse}','#ffffff','#171516')
• Cell ：=color(A1,'#ffffff','#171516')
• Fixed value ：=color('2','#ffffff','#171516')

10. Judgment function

The judgment function is to judge the data ; contain istime( Time judgment )、isdate( Period judgment )、isnumber( Digital judgment )、intval( If the parameter is empty, the default value is returned 0)、strval( If the parameter is empty, the default value is returned nil)

Example ： With istime For example

• =istime("10:20:30") return true
• =istime('#{jm.create_time}')
• =istime('${jm.create_time}')
• =istime(A1)

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