我不知道发生了什么。为什么在SQL中使用where条件时数据不显示在datagridview中。没有任何错误。这只是显示行标题。但是当我尝试删除这个条件时,它是显示数据。我的密码怎么了?//string sql = "SELECT id, model, comercial_model AS [Comercial model], ean AS [Package No], type AS Unit FROM models";
string sql = "S
当我使用数字4-22时,输出不稳定,我不知道为什么。我将非常感谢你的帮助,我也想知道为什么这不起作用。#include<stdio.h>int main(void) int shifts; printf("What is your message "); printf("By how many letters do you want to
我是第一次尝试触发器。CREATE TRIGGER t_foldersPrivate BEFORE DELETE ON foldersPrivate DELETE FROM programs WHERE folderType = '0' AND folderID = OLD.ID; 我收到以下错误:
`1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL se