printable columns and rows

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Three ways to add columns and rows to a DataTable

NameTaxcolumn.expression ="Price * 0.0862";//set the column to an expression that evaluates the values in a column or creates an aggregate column//Create the third column of a tableDataColumn Totalcolumn =NewDataColumn (); Totalcolumn.datatype= System.Type.GetType ("System.Decimal"); Totalcolumn.columnname=" Total"; Totalcolumn.expression="Price + Tax";//The column's expression is the first column and the second column worth and//Add all columns to t

YII2 Gridview Dynamic display of rows or columns

We know that the GridView component in Yii is very useful.Dynamically display columns.To use the Visible propertyisset ($_gettruefalse], Dynamic display lines.Pay attention to rowoptions. According to the document he can receive arrays or anonymous functions. Writes the judgment logic to the anonymous function. Add a hidden class to the current line when you are satisfied. Equivalent to not showing.Widget ([' Dataprovider ' =$dataProvider, ' rowoptions ' =function($model,$key,$index,$grid){

An example of changing columns in SQL grouping rows

An example of changing columns in an SQL grouping row (SQL Server 2000 has been okay) 1. The raw data in Table A is as follows: Create Table [DBO]. [a] ([C1] [varchar] (50) Collate chinese_prc_cs_as null,[C2] [varchar] (50) Collate chinese_prc_cs_as null,[C3] [varchar] (50) Collate chinese_prc_cs_as null,[C4] [varchar] (50) Collate chinese_prc_cs_as null) Insert into a ('123', 'sz ', '44', '123 ')Insert into a ('123', 'sz ', '44', '123 ')Insert into a

Datagridview dynamically add columns and rows, and refresh after addition

Sometimes you need to dynamically Add the column name of the datagridview: System. windows. forms. datagridviewtextboxcolumn [] column = new datagridviewtextboxcolumn [columnnum]; for (INT I = 0; I When dynamically adding rows and columns, do not assign datasource to the datagridview. If you assign a value to a able directly, problems may occur. You also need to dynamically convert the datatable to add da

How do I freeze Excel table rows and columns?

Sometimes our Excel tables have very many rows and columns of data, so when you move to the bottom of the data, the table head can not see, if the number of columns, once the right to move, the left of the serial number and see, so very inconvenient, there is no way to put the table head and serial number fixed it, of course, We can use the Excel Freeze pane feat

How to transpose rows and columns of a database

How to change the rows and columns of a database to thinkphp and mysql. Database: The SQL statement for table creation is as follows: CREATE TABLE `score_collect` ( `std_id` int(10) NOT NULL, `course_id` int(11) NOT NULL, `score` varchar(255) DEFAULT NULL, PRIMARY KEY (`std_id`,`course_id`), ) INSERT INTO `score_collect` VALUES ('2012508082', '2', '20'); INSERT INTO `score_collect` VALUES ('2

LaTex Production Tables Merge rows \multirow merge columns \multicolumn

\multicolumn{5}{| C |} { } \\ \multicolumn{5}{| C |} {\textbf{\large Father ' s occupation}} \ \ \multicolumn{5}{| C |} { } \\ \hline \ \ \multicolumn{1}{|c|} {\textbf{}} \multicolumn{1}{|c|} {\textbf{}} \multicolumn{1}{c|} {\textbf{group A}} \multicolumn{1}{c|} {\textbf{group B}} \multicolumn{1}{c|} {\textbf{group C}} \multicolumn{1}{c|} {\textbf{group D}} \ \ \ \ \CLINE{2-6} \ \ \multirow{5}{*}{\begin{sideways}{\textbf{\large mother ' s Occ

Delete all rows in the table, but keep the table structure and its columns, constraints, indexes unchanged. truncate table [Table name]

Original post address: http://hi.baidu.com/liyanlin84/blog/item/eb306616cdb51e1c972b4389.html Delete all data in the table, and you want to automatically increase the column from 1! Use truncate table tblname Truncate is a SQL statement used to delete data table content. It is used as follows:Truncate table [Table name].The following describes the methods and principles of the truncate statement in mssqlserver2000:The truncate table name is fast and efficient because:The truncate table funct

Python3 reading an Excel file extracts only the values of certain columns in some rows

Today, a classmate gave me an Excel file, asked to read some rows, some columns, and then I tried to do a demo, here to share out, hoping to help everyone: First install XLRD: PIP3 Install XLRD And then the code: Import NumPy as NP import xlrd data = Xlrd.open_workbook (' lifetable_16.xlsx ') table = data.sheets () [0] # Print (table) # nrows = table.nrows #行数 # ncols = table.ncols #列数 # c1=arange (0,

Oracle columns of multiple rows of data are spelled into a single line of characters

Oracle columns of multiple rows of data are spelled into a single line of charactersoracle provides two functions Wmsys.wm_concat and Listagg functions. www.2cto.com First Introduction: wmsys.wm_concat Example: ID name 1 aa 2 bb 3 cc knot The fruit is "aa,bb,cc" select Wmsys. Wm_concat (a.name) from User A In this case, the query results: "AA,BB,CC" www.2cto.com delimiter If you do not need

Use GridBagLayout to control the height and width of rows and columns

= 0.0;//Reset to the default $C.gridwidth = Gridbagconstraints.remainder;//End Row -C.gridheight = 1;//Reset to the default -Makebutton ("Button9", Gridbag, c); -Makebutton ("Button10", Gridbag, c); A +SetSize (300, 100); the } - $ Public Static voidMain (String args[]) the { theJFrame f =NewJFrame ("Gridbag Layout Example"); theF.setlocation (400, 200); theGRIDBAGEX2 Ex1 =NewGridBagEx2 (); - in ex1.init (); the theF.add ("Center", EX1); About F.pack (); the f.setsize (F.getpre

NumPy array concatenation, respectively, on rows and columns of merged instances

This article mainly introduces about NumPy array splicing, respectively, the combination of rows and columns on the example, has a certain reference value, now share to everyone, there is a need for friends can refer to In the analysis of data, we will combine some sample data with multiple characteristics, put together to analyze, predict .... The following is a concatenation of arrays using functions i

How to take NumPy array to specify rows and columns

This time to bring you how to take NumPy array to specify the row and column, take numpy array to specify the column of attention to what, the following is the actual case, together to see. The operation on the NumPy array is a bit cumbersome, but there is no way. For example A = [[4,5,6], [[7,8,9]] Take a of 2 3 rows, 1 2 columns c=[1,2] D =[0,1] If written as b = a[c,d] Output: [4 8] Take the data from t

JavaScript table specifies columns that span rows based on the same values

functionmergetablerows (tablename,colidx) {tableobj=document.getElementById (tableName); varlasttdtext=NULL; varrowlen=tableObj.rows.length; for(vari=rowlen-1;i>=1;i--){ varcurrtext=tableobj.rows[i].cells[colidx].innerhtml; if(lasttdtext==NULL) {Samecount=1; }Else if(lasttdtext!=Currtext) { if(samecount>1) {tableobj.rows[i+1].cells[colidx].rowspan=Samecount; } Samecount=1; }Else if(lasttdtext==Currtext) {Tableobj.rows[i+1].deletecell (COLIDX); Samecount++; } Lasttdtext=Currtex

It will be converted to a function to display data rows with comma-delimited columns of data in a row

It will be converted to a function to display data rows with comma-delimited columns of data in a row

Four rows and five columns form table layout

Top five columns in four rows ------------------ --------------------------------------

The 18th problem is to write a program that implements the transpose of the matrix (3 rows and 3 columns).

1#include 2 voidPinta[][3])//the "warning" two-dimensional array must give the specific data of the Dequeue3 {4 for(intI=0; i3; ++i)5 {6 for(intj=0; j3;++j)7printf"%d", A[i][j]);8printf"\ n");9 }Ten } One intMainintARGC,Char*argv[]) A { - intarr[3][3]={1,2,4, - 3,5,7, the 9,0,6 }; -printf"Original: \ n"); - P (arr); - for(intI=0; i3; ++i) + for(intJ=i; j3; ++j) - { + inttmp=Arr[i][j]; Aarr[i][j]=A

Inside SqlServer: use XML to fold columns of class arrays into rows

I have processed some XML data some days ago. When I read a book, I remember a method to split arrays in XML, which is widely used in the past two days. Record it. -- In this example, the value of each segment is obtained by dividing an IP address. Of course, it can also be data or columns of other types of data: a-B-c-d, 3, 4, 5, 6, and so on.Declare @ ip varchar (15 );Set @ ip = '192. 168.1.123'-- Convert string to XMLDeclare @ ipx xml;Set @ ipx =

How to change the columns of table rows in the database

Today, I saw a friend on the forum asking about the problem of changing the columns of rows in the database table. I gave a solution to the problem by spelling SQL scripts. I think this question is still a bit general, so I leave the question and answer here for the reference of friends who have similar questions. If anyone else has a better solution, please post it. Code And everyone makes common progress

How to use SQL statements to convert rows and columns

How to use SQL statements to convert rows and columns Row-to-column conversion is a common requirement in the database system. During database design, in order to fit the accumulated storage of data, direct record is often used, while displaying data, you want to organize all records and display them in a transpose manner. Figure 9.1 shows the row/column conversion function. Figure 9.1 re

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