distinct-values

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get Distinct Values with Sorted Data

I need a Query t开发者_运维技巧o get distinct keys with sorted on basis of score in Mongodb 1.6.5[详细]

2023-02-06 04:25 分类：问答
MySQL How to Return Unique/Distinct Results?

I\'m running the following MySQL query to find cars that don\'t have manuals (and ha开发者_JAVA技巧ve black wheels, etc.)[详细]

2023-02-04 17:55 分类：问答
How to filter duplicates within row using Distinct/group by with JOINS

For simplicity, I will give a quick example of what i am trying to achieve: Table 1 - Members ID|Name --------------------[详细]

2023-02-04 10:15 分类：问答
Select one distinct column, others can be non distinct. - MySQL

Ok I have a temporary table with 135000 rows, I\'m trying to insert some o开发者_高级运维f the values from this temporary table into other tables.[详细]

2023-02-03 07:39 分类：问答
find duplicates in each array rails

<% @sp_references.each do |sp开发者_如何学Python_ref| %> <% sp_ref.all_references.each_with_index do |tax_ref, i| %>[详细]

2023-01-28 12:40 分类：问答
SELECT DISTINCT for data groups

I have following table: IDData 1A 2A 2B 3A 3B 4C 5D 6A 6B etc. In other words, I have groups of data per ID. You will notice that the data group (A, B) occurs multiple times. I want a query that c[详细]

2023-01-27 02:36 分类：问答
how to combine multiple true/false rows in MYSQL

I have a query with a join on a table containing various true/false columns. I can enforce DISTINCT & GROUP BY to ensure only single unique row gets returned, however the true/false rows do not be[详细]

2023-01-26 03:06 分类：问答
Getting distinct list of ID's in CoreData

What\'s the most efficient way to perform this query on a CoreData table?To use the standard employees database model -- I want DISTINCT department ID\'s for all departments that contain employees wit[详细]

2023-01-13 01:22 分类：问答
SQL eleminate mulitple value(s) if same identifier has a associated NULL value

Ok here goes: I have a table with id ( can be duplicate but not NULL ) and value ( can be duplicate and NULL )[详细]

2023-01-10 21:05 分类：问答
T-SQL Distinct column problem when trying to filter duplicates out

I have the following data COL-1COL-2 10TY/OK 10TY/OK 10TY/OK 10TY/OK 10TY/OK 22KP/L 22KP/L 22KP/L 22KP/L 22KP/L[详细]

2023-01-08 10:27 分类：问答