postgresql
Finding filled rectangles given x, y coordinates using SQL
Given the following filled x, y coordinates: 0, 0 0, 1 0, 2 1, 0 1, 1 1, 2 2, 0 2, 1 2, 2 4, 0 4, 1 5, 0 5, 1 How do I write an SQL query to determine all the filled rectangles? A rectangle is def[详细]
2023-04-11 16:05 分类:问答What are the conditions for encountering a serialization failure in PostgreSQL?
The PostgreSQL manual page on the Serializable Isolation Level states: [Like] the Repeatable Read level, applications using this level must be prepared to retry transactions due to serialization fai[详细]
2023-04-11 15:09 分类:问答Issue for insert using psycopg
I am reading dat开发者_JAVA技巧a from a .mat file using the Pytables module. After reading the data, I want to insert this data into the database using psycopg.[详细]
2023-04-11 13:44 分类:问答ASP web application timeout and possible configuration issues
I have an asp/IIS application deployed on our server that runs fine every time we reboot it or restart due to new application modifications. However, after 10-20 minutes it starts to chug and timeout[详细]
2023-04-11 12:34 分类:问答'password authentication failed for user "postgres"'
I have installed PostgreSQL 8.4, Postgres client and Pgadmin 3. Authentication failed for user \"postgres\" for both console client and Pgadmin. I have typed user as \"postgres\" and password \"postgr[详细]
2023-04-11 09:37 分类:问答Communication Between 2 Databases
I have 2 databases and want to implement triggers on table update of database1 to do do some updates on database2\'s tables.开发者_如何学Go[详细]
2023-04-11 07:44 分类:问答Extracting values out of serialized php array in postgresql
Problem: one column of a table contains serialized php arrays. i\'d like to extract values of that serialized data structure with开发者_JAVA技巧out using php. i\'d need a postgres sql statement to ge[详细]
2023-04-11 07:41 分类:问答Ruby on Rails: How can I edit database.yml for postgresql?
Rails new app. Th开发者_如何学Goe current database.yml is like that: # SQLite version 3.x #gem install sqlite3[详细]
2023-04-11 05:52 分类:问答offline limited multi-master in Postgres
Site A will be gene开发者_如何学编程rating a set of records.Nightly they will backup their database and ftp it to Site B.Site B will not be modifying those records at all, but will be adding more reco[详细]
2023-04-11 05:41 分类:问答Remove (.) from decimal values in postgres
I want to remove . from all decimal value from my query output like if i use select(32.00) output should come 3200[详细]
2023-04-11 03:31 分类:问答