Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Login
Remember
Register
Ask
Q&A
All Activity
Hot!
Unanswered
Tags
Users
Ask a Question
Ask a Question
Categories
All categories
Topic[话题] (13)
Life[生活] (4)
Technique[技术] (2.1m)
Idea[创意] (3)
Jobs[工作] (2)
Others[杂七杂八] (18)
Code Example[编程示例] (0)
Recent questions tagged database
0
votes
1.1k
views
1
answer
database - SQL Group by Date Range
I have the following data: Date Code 2014-08-01 A 2014-08-02 A 2014-08-03 A 2014-08-04 A 2014-08-05 ... this data using SQL. Any ideas? Thanks! See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
952
views
1
answer
database - How to display content of one site in another using PHP?
I'm trying to show contents of two websites in one another , someone suggest me to use RSS reader but my ... didnt work / thanks in advance See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
2.1k
views
1
answer
database - How to insert multiple records into Oracle DB using Node.js
I am able to insert one record into a table, but i want to insert multiple records at once into the table- My Code is ... (null, conn); } }); }; See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.2k
views
1
answer
database design - Cross table constraints in PostgreSQL
Using PostgreSQL 9.2.4, I have a table users with a 1:many relation to the table user_roles. The users ... they are not dynamically updated. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.4k
views
1
answer
database - Convert DB2 SQL Decimal to DATE
I need to convert Decimal to date. I have a decimal date field that contains data like this : 1,132, ... statement? SELECT column1 from table1 ; See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.0k
views
1
answer
database - How to add 1 hour to currrent_timestamp in mysql which is the default value?
I have a database with timestamp field which takes current timestamp by default, but I have problem with the ... only in one database. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
975
views
1
answer
database - Do aggregate MySQL functions always return a single row?
I'm sorry if this is really basic, but: I feel at some point I didn't have this issue, and now I ... mistake. Any help is really appreciated. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.1k
views
1
answer
database - is it possible to have alphanumeric sequence generator in sql
I need to write a SQL query to print the following aphanumberic sequence in SQL 0001, 0002, ... , 0009 ... are UPPERCASE. Thanks in advance See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.3k
views
1
answer
database - How to represent Oracle Interval in Java
I'm using Java 7 with hibernate 4. Want to use oracle Interval data type (http://psoug.org/definition/ ... types such as oracle.sql.INTERVALS See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
900
views
1
answer
database - PHP - Query single value per iteration or fetch all at start and retrieve from array?
I have a function that looks something like this: //iteration over scales foreach ($surveyScales as $scale) { ... get the value from there? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
995
views
1
answer
database - One big query vs. many small ones?
I'd like to know, which option is the most expensive in terms of bandwith and overall efficiency. Let's say I ... PHP and MySQL by the way. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.6k
views
1
answer
database - How to solve liquibase waiting for changelog lock problem in several pods in OpenShift cluster?
We are supporting several microservices written in Java using Spring Boot and deployed in OpenShift. Some microservices ... OpenShift at all? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.2k
views
1
answer
database - sqlite: how to add total time hh:mm:ss where column datatype is DATETIME?
This is the snapshot of my column in sqlite db and its datatype in schema is defined has DATETIME. Now I want to ... it returns 0.0 as result. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.1k
views
1
answer
database - MYSQL TINYBLOB vs LONGBLOB
This is a follow up for my previous question: Blob and Storage Requirement I did some testing using SHOW TABLE ... other of the BLOB types? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.1k
views
1
answer
database - When does "select for update" lock and unlock?
Here is my Pseudo-code: re = [select **result** from table where **condition**=key for update] if[re satisfies ... not be blocked by this one ? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
863
views
1
answer
database schema - Break atomicity rule storing list of items when there is no reason to query about items? Verses join table that requires whole join table be scanned
This specific case is regarding lists, and items. The same item may belong to multiple lists, and each list ... rules were written by experts. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
938
views
1
answer
database - How to read excel sheets in android program
I have a database of 29 excel sheets which i need to use in my code. I converted those ecxel sheets in .xml format ... 0 - 30 Days 0 - 30 Days See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
981
views
1
answer
database - How to automatically update Google Gauge
I'm kinda rookie in this, but I need help with Google Gauge that should take latest entry in database and display it, ... </div> </body> </html> See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.0k
views
1
answer
database - Opening csv-File via ADO-connection - Column Limitation to 255 / or just use another file type?
I have quite a large csv-File (about 800MB) which I need to access from an Excel File via VBA (I am using ... solution to be found on the web. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
965
views
1
answer
database - How to overcome Netezza's lack of unique constraint/referential integrity enforcement?
It appears that the lack of support for enforcing 2 basic constraints (unique and foreign key), is a ... tool for avoiding these headaches? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.2k
views
1
answer
database table - MySQL Error 1 (HY000) Trouble creating file Errcode 2
I'm having issues creating a table for my ruby on rails app. It's driving me crazy! The following is returned when ... I'm a total newbie, btw. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.0k
views
1
answer
database - android save object in firebase
I created sign in app and I am using with firebase database. But I have a problem when I am trying to save ... find any solution to my problem. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.2k
views
1
answer
database - "The ConnectionString property has not been initialized" error in VB.NET
Every time I tried to connect to the database it give me this error "The ConnectionString property has not been ... address") End With End Sub See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
970
views
1
answer
database - Unicode in SQL Server 2012 Express
I am inserting some unicode characters such as Chinese characters using a c# program into a SQL Server 2012 ... ExecuteNonQuery(); Thank you! See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
898
views
1
answer
database - What is a PRIMARY KEY
In database code, I see references to a PRIMARY KEY. What is a PRIMARY KEY? and what difference does it make if ... don't form a PRIMARY KEY. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
891
views
1
answer
database - mySQL - Table locking vs Row locking
Application Description I have a table which stores id's which represent area's on a map. Each map ... full of useless unoccupied areas. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
901
views
1
answer
database - How to raise an Exception inside a Trigger? Is there a way to do this?
There's a situation like: If the Salary column in updated with a value lesser than it's original value, print ... any other way to achieve this? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
0
votes
1.1k
views
1
answer
database - Rollback Multiple SQL update queries in MS Access
I have multiple SQL stored procedures (e.g. UPDATE, SELECT INTO statements) executed in VBA in MS Access: CurrentDb. ... . How can this be done? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
database
Page:
« prev
1
2
3
4
5
6
7
...
37
next »
Ask a question:
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question
Just Browsing Browsing
[1] 想请问如何在ajax的页面查找关键字并高亮。
[2] 用python爬取《财富》中国500强数据
[3] js日期操作问题--给定时间区间生成区间内详细数组
[4] vue使用L2Dwidget报错了
[5] webstorm新建Node.js Express App识别不了express-generator是怎么回事?
[6] c - Why the for loop is filling the whole array with the latest string?
[7] 如何用正则表达式实现字符串反转
[8] java - Alternative of parallelstream to run method in parallel
[9] 关于vue3+ts中interface的使用
[10] java - Why is my IDE telling me my if statement is redundant?
2.1m
questions
2.1m
answers
60
comments
56.8k
users
Most popular tags
javascript
python
c#
java
How
android
c++
php
ios
html
sql
r
c
node.js
.net
iphone
asp.net
css
reactjs
jquery
ruby
What
Android
objective
mysql
linux
Is
git
Python
windows
Why
regex
angular
swift
amazon
excel
algorithm
macos
Java
visual
how
bash
Can
multithreading
PHP
Using
scala
angularjs
typescript
apache
spring
performance
postgresql
database
flutter
json
rust
arrays
C#
dart
vba
django
wpf
xml
vue.js
In
go
Get
google
jQuery
xcode
jsf
http
Google
mongodb
string
shell
oop
powershell
SQL
C++
security
assembly
docker
Javascript
Android:
Does
haskell
Convert
azure
debugging
delphi
vb.net
Spring
datetime
pandas
oracle
math
Django
联盟问答网站-Union QA website
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
广告位招租
...