database-table

相关标签：javascript jquery android 多少钱 iPhone

MySQL: Select Random Entry, but Weight Towards Certain Entries

I\'ve got a MySQL table with a bunch of entries in it, and a column called \"Multiplier.\" The default (and most common) value for this column is 0, but it could be any number.[详细]

2022-12-22 07:02 分类：问答
Is it necessary to have a Primary key which is sequence generated even though I may not use it for DB operations

Hi I had parent table which has ID and some other columns and a child table which have many values based on this ID(foreign Key). I wanted to create the table with a Primary Key which is sequence and[详细]

2022-12-20 18:44 分类：问答
How to join the results of a subquery to a table in PostgreSQL?

hello i\'m newbie in sql (postgresql) i have 2 tables as result of 2 differen selects all callsour customer contacts[详细]

2022-12-17 01:53 分类：问答
Weird pynotify behaviour in Ubuntu 9.10

I wrote a small app and I am using pynotify to show some messages to the user. It all works fine here in arch, but when I tested it in Ubuntu, the behaviour was very weird.[详细]

2022-12-16 16:12 分类：问答
Limit an sqlite Table's Maximum Number of Rows

I am looking to implement a sort of \'activity log\' table where actions a user does are stored in a sqlite table and then presented to the user so that they can see the latest activity they have done[详细]

2022-12-15 19:10 分类：问答
Saving changes after table edit in SQL Server Management Studio

If I want to save any changes in a table, previously saved in SQL Server Management Studio (no data in table present) I get an error message:[详细]

2022-12-15 10:30 分类：问答
PostgreSQL create table if not exists

In a MySQL script you can write: CREATE TABLE IF NOT EXISTS foo ...; 开发者_运维问答 ... other stuff ...[详细]

2022-12-11 19:03 分类：问答
How to store data that can be structured or non-structured at the same time?

I have a database with the following table: PATIENT (PATIENT_ID*, MEDICAL_EXAMINATIONS) where the field MEDICAL_EXAMINATIONS contains a free-text description of the exams undertaken by the patient.[详细]

2022-12-10 05:54 分类：问答
Create table variable in MySQL

I need a table variable to store the particular rows from the table within the MySQL procedure. E.g. declare @tb table (id int,name varchar(200))[详细]

2022-12-08 07:46 分类：问答