1. Example: Insert a record every 100 rows, and the first column of this record contains the line number, and the other columns are the same as the first row
#!/bin/sh
var= "00001" # variable
cat A.txt|awk ' nr==1 ' |while read Line # Get the first row of the file do
#echo "$line"
result= ' Echo ' $line ' |cut-f2-' # Defaults to tab split to get the second column to the last column of
cat A
="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 the tabletable. Columns.Ad
The table has three columns: stunamem and subject score.Table data includes:Zhang San Language 0Li Si Language 4Wang 'er English 90Zhang San, mathematics 333The query results are as follows:Chinese and English mathematics for studentsZhang San 0 0 333Li Si 4 0 0The default value of no score is 0.
Query SQL
Wait downstairs.
Use Case when
SQL code
/*
Title: normal row/column conversion (Version 2.0)
Author: AI xinjue Luo. Xin Hua)
Time: 2008-03-09
Lo
1 public class q1_7 {2 3 Public static void setzero (INT [] [] matrix) {4 5 Boolean [] ROW = new Boolean [matrix. length]; 6 7 Boolean [] column = new Boolean [matrix [0]. length]; // Number of Columns 8 9 for (INT I = 0; I
Clear one's rows and columns to 0 whose vlaue is 0
SQL: insert all other columns of rows with the same primary key updated.
In SQL writing, we often encounter such problems. During each insert operation, you must determine whether the data table already exists. For the same data, all the columns except the primary key are the same. If no data exists, the data is inserted. If yes, the data is updated. In this sit
problem, you can go to F12 to see the box model of row and Col, because Bootstrap col default has gutter (that is, Col has about padding respectively 15px)If you feel that this default is not good, we can make our own rules override the defaultDefine the style as follows1 . Row.no_gutter [class^= "col-"],.row.no_gutter [class*= "col-"] {2 padding-right:0px; 3 padding-left:0px; 4 }Then, when you need to nest the columns, just add the nested ro
: This article mainly introduces how to represent rows and columns in php 3-21 daily learning. if you are interested in PHP tutorials, refer to it.
We can see that
Newline
Change columns
Therefore, two for loops are required to implement the table.
Student renewal table
">
Cat ${file} | While Read lineDoecho $ LineDone-------------------------------------------While the read line #每次读取aa a row in the. ListDoEcho $LINE #输出每行的信息Done ${file}-------------------------------------------Reads the first and second columns of each row of a fileWhile read N mDoecho "$n"echo "$m"Done ${file}This article is from the "Linux_woniu" blog, make sure to keep this source http://llu1314.blog.51cto.com/5925801/1965259Shell reads file
methods for adding columns and rows to a asp.net DataTableMethod One:
DataTable Tbldatas = new DataTable ("Datas");
DataColumn DC = null;
DC = TBLDATAS.COLUMNS.ADD ("ID", Type.GetType ("System.Int32"));
dc. AutoIncrement = true;//automatically increased
dc. AutoIncrementSeed = 1;//starting at 1
dc. AutoIncrementStep = 1;//Step size is 1
dc. AllowDBNull = false;//
DC = TBLDATAS.COLUMNS.ADD ("Product", Ty
Examples are as follows:
Not much to say, directly on the code.
$ ("Table TR"). Click (function () {//For table row Add click event
var tr = $ (this);/Find TR primary color
var td = Tr.find ("TD");//Find TD element
alert (td[0].innerhtml);//Specify subscript can
})
Today's project needs to use the table selected columns of data, online data found can not get to select the specified column of data, after analyzing the test to summ
--through Max ... Case ... When ... Converting column dataSelectStudent as 'name',MAX( CaseSubject when 'language' ThenScoreELSE 0 END) as 'language',--Replace subject column data with score column dataMAX( CaseSubject when 'English' ThenScoreELSE 0 END) as 'English' --Replace subject column data with score column data fromScoresGroup byStudentOrder byStudentSELECTStudent as 'name', --Converting a language column with the AVG function AVGLanguage as 'language', --convert English
The JQuery-based code for dynamically deleting rows and columns in a Table has previously been released. For more information, see. First, you need to obtain the number of rows in the Table. I add tables in the background. So when I get the Table at the front end, I get the total number of values by length.
For example:
What should I do if I want to print the t
A report on the query of summary rows or columns by PHP in combination with html tables:
PHP reads data from mssql and determines the method used to aggregate the rows.
This is part of the code. for example, the total amount column is required. how can I display and calculate the total in the last row of the table? thank you for your advice !!
$ Query = "
The conversion of rows and columns is often required when writing SQL statements. It may be difficult for a newbie to use the decode and sum functions, this problem can be solved.
Create Table Test (name char (10), KM char (10), CJ number)
Insert into test values ('zhang san', 'China', 80)Insert into test values ('zhang san', 'mat', 86)Insert into test values ('zhang san', 'English ', 75)Insert into test
Jquery MethodCopy codeThe Code is as follows:$ (Function (){// Calculate the total value of the personnel statistical table during page loadingCalcSum ();});// Calculates the total number of rows./*Aggregate behavior intermediate VariablesAdd each cell to the total row of the columnObtain the total number of columns.*/Function trVisible (chk, index ){Var disValue = $ ("# Tr" + index.html .css ("display ");I
Preface
This article mainly reads the Excel document and reads the contents by traversing the rows and columns. Where the content type of the cell needs to be read separately. Example
public static void Main (string[] args) throws Exception
{
//input stream
InputStream is = new FileInputStream ("f:\\ Poi\\ffff.xls ");
File System
Poifsfilesystem fs = new Poifsfilesystem (is);
Define Workbook
Hs
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