query-optimization

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Generate Multiple Scripts from SQL Server Query Optimizer

I looked around but couldn\'t find an answer to this question so I figured I wou开发者_高级运维ld ask.So I am in the process of using the SQL Server query optimizer on several long stored procedures.W[详细]

2023-04-13 06:11 分类：问答
Prevent duplicate rows in MySQL without unique index/constraint?

I\'m writing an application that needs to deal with millions of URLs. It also needs to do retrieval by URL.[详细]

2023-04-12 20:43 分类：问答
mySQL - How can I interpret my EXPLAIN results and optimize this query?

Looking to understand what my EXPLAIN results mean here, and to optimize this query and my tables as best as I can.[详细]

2023-04-12 07:58 分类：问答
Mysql join with group by query optimization

I am using the following query to get the latest articles (article title + author name + total comments) but it takes long time to run:[详细]

2023-04-12 03:36 分类：问答
MySQL select with a count query on another table

I have simple article application with three tables: article id, title,body,user_id comment id, article_id, user_id,body[详细]

2023-04-12 01:50 分类：问答
How can I make this SQL function faster?

Background I have the following function, which ranks results by how closely they match the value that was searched for:[详细]

2023-04-12 00:33 分类：问答
mySQL Indexes suggestion software

Is there any software that can analyze a mySQL query, and suggest a开发者_运维技巧 specific index creation.[详细]

2023-04-11 13:20 分类：问答
MYSQL: How to use outer aliases in subquery properly?

The first query works just fine. It returns one row from the table \'routepoint\'. It has a certain \'route_id\' and \'geo_distance()\' is on its minimum given the parameters. I know that the 开发者_如[详细]

2023-04-10 11:34 分类：问答
Automatic reformulation of condition in PostgreSQL view

I have a table of the following form: [mytable] id,min,max,funobj -----------------------------------------[详细]

2023-04-10 05:42 分类：问答
Query optimization in massive tables

I have a table containing brick and mortar shops. The table is about 15 million rows with 30 columns.[详细]

2023-04-09 18:53 分类：问答