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SELECT w.company, COUNT(DISTINCT d.RFID_ID) AS total_unique_checkins -- 对每个公司,计算不同RFID_ID的打卡次数 FROM t_worker w JOIN t_rfid r ON w.signNum = r.num1 JOI 阅读全文
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python 逐行读取文本文件 # 打开文件 with open('myfile.txt', 'r') as file: # 逐行读取文件内容 for line in file: print(line, end='') # 注意,print 函数默认会在每行末尾添加换行符,所以这里使用 end='' 阅读全文
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public class CharCountExample { public static void main(String[] args) { String text = "Hello, world! How are you?"; char targetChar = 'o'; int count 阅读全文
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using System.IO; using UnityEngine; using UnityEngine.UI; public class SaveRawImageAsPNG : MonoBehaviour { public RawImage rawImage; public void SaveI 阅读全文
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python 读取CSV文件 import csv # 打开CSV文件 with open('example.csv', 'r', newline='') as file: reader = csv.reader(file) # 遍历CSV文件的每一行 for row in reader: prin 阅读全文
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python 读取CSV文件 import csv # 打开CSV文件 with open('example.csv', 'r', newline='') as file: reader = csv.DictReader(file) # 遍历CSV文件的每一行(作为字典) for row in re 阅读全文
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unity3d Dictionary 根据key获取value using System; using System.Collections.Generic; using UnityEngine; public class DictionaryExample : MonoBehaviour { pr 阅读全文
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unity3d缩放物体 using UnityEngine; public class ScaleObject : MonoBehaviour { // 缩放速度,可以根据需要调整 public float scaleSpeed = 0.1f; // 控制缩放的方向,这里以X轴为例 public b 阅读全文
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unity3d get post请求 using UnityEngine; using UnityEngine.Networking; public class NetworkRequestExample : MonoBehaviour { IEnumerator Start() { string 阅读全文
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using System.Collections; using System.Collections.Generic; using UnityEngine; using Mono.Data.Sqlite; // 注意:这取决于你使用的SQLite库 public class SQLiteExampl 阅读全文
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unity3d 读取串口 using System.IO.Ports; using UnityEngine; public class SerialCommunication : MonoBehaviour { SerialPort mySerialPort = new SerialPort("CO 阅读全文