sql

英文: NOT Equal(<>) in Oracle SQL is ignoring Index and NULL valued rows 问题 我有一个查询，在Oracle SQL中需...

英文: not getting the result i want in MYSQL using group by and case 问题 以下是您的代码的中文翻译： 我有2个表，我想通过使用grou...

英文: Determine whether DROP TABLE will succeed 问题 Is it possible to determine whether DROP TABLE tabl...

英文: MySQL Get multple rows for a single row in db 问题 你可以在MySQL中使用以下查询来实现这个目标： SELECT id, (@row_numbe...

英文: Checking the output for a condition and returning a value 问题 以下查询从两个表中获取计数并将它们相除以得到一个数字（我在此处使用交叉...

英文: How to select specific rows twice? 问题 使用UNION ALL可以实现这个目标。是否还有其他方法？ 英文: I want to query some row...

英文: How to have a column set to a custom type? 问题 I want to set the column questions in the quizs ta...

英文: query for all rows and indicate which ones have a certain text in a column 问题 SELECT t1.id, t1.t...

英文: JOIN tables, only selecting newest row from second table, and conditional on second table data 问...

英文: C# filter fields are not working, but the code looks correct 问题 My database has 3 filters and I ...