Tag：Head office
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Common methods of GIT patch
Simply record the relevant usage of GIT patch commonly used in the day. 1. git format-patch/am Generate patch Generate a patch, specify the commit ID, and generate a patch file separately for each commit after it. Patch files are numbered from 1 in the order of commit. The patch file will be generated to the […]
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10. C language output diamond (detailed version)
Diamond is the figure shown below. The total number of rows is equal to the total number of columns: Write a program to print out diamonds according to the total number of rows entered by the user.This topic is mainly to find out the rules and examine the logical thinking of readers.You can start from […]
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CloudQuery v1. 4.2 release | add polardb and data import tools
Hello, community partners, cloudquery v1 4.2 has been released. The new data source poalrdb and “data import” tool are added this time. Through our efforts, we finally greatly reduce the memory resources ~ ImageImage required for service operation New features 1、 Add polardb data source Supports connecting polardb for Oracle data source version 1.6 Current […]
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Cloudquery v1.4.2 release | new polardb and data import tools
Hello, friends of the community, cloudquery v1.4.2 has been released. This time, we have added a new data source poalrdb and a new “data import” tool. Through our efforts, we have finally greatly reduced the memory resources ~ ImageImage required for service operation New features 1、 New polardb data source Supports connecting polardb for Oracle […]
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Quickly identify bad projects! Try this project code statistics idea plug-in
Programming is a wonderful thing. Most of our time is actually spent copying and pasting, and then modifying the code. Most of the time, we don’t care about the code quality. As long as the function can be implemented, I don’t care how long the code of a class and a method is. As a […]
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SQL sort
Sort 1, 2, 2, 2, 3, 4 with the following function: select row_ Number() over (order by field) from table name; 1、 row_number() Values: 1, 2, 2, 2, 3, 4 Sequence: 1, 2, 3, 4, 5, 6 2、rank() Values: 1, 2, 2, 2, 3, 4 Sequence: 1, 2, 2, 2, 5, 6 3、dense_rank() Values: 1, […]
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What percentage% is graded before PL / SQL exercise 3
Create table t_ Googs, insert a 7-line statement. CREATE TABLE T_GOOGS( GOODS_TYPE VARCHAR2(10), GOODS_NAME VARCHAR2(20), PRICE NUMBER(5) ); INSERT INTO T_ Googs values (‘mobile phone ‘,’ Huawei mate ‘, 2999); INSERT INTO T_ Googs values (‘mobile phone ‘,’ Apple iPhone ‘, 7999); INSERT INTO T_ Googs values (‘mobile phone ‘,’ millet ‘, 1999); INSERT INTO […]
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WinForm delete dataGridView reported exception: System.IndexOutOfRangeException: “index 7 has no value
The WinForm interface is as follows: using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace form1 { public partial class Form1 : Form { List data = GetStudents(); public Form1() { InitializeComponent(); this.dataGridView1.DataSource = data; } public static List GetStudents() { return new List() { […]