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django syncdb and an updated model
...m using South for migrating models with a custom db backend (like django-mssql)
– Don
Apr 4 '11 at 7:32
1
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How to ALTER multiple columns at once in SQL Server
...simple metadata change. You are welcome to join my lecture tomorrow about "SQL Internals - Physical Table Structure under the hood, and implementation on real case scenarios" to see it all in practical :-)
– Ronen Ariely
Mar 12 '19 at 17:19
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Wi-Fi 是什么的缩写 - 创意 - 清泛网 - 专注C/C++及内核技术
...列表。
Interbrand 当初提交的十三个方案，除了 Wi-Fi，还包括：
Skybridge
Torchlight
Flyover
Transpeed
Elevate
Trapeze
Dragonfly
Hornet
在首轮投票中，Wi-Fi 并不是最高分数，分数最高的依次为：Trapeze（飞人）、Dragonfly（蜻蜓）、Hornet...
Is there any boolean type in Oracle databases?
... any Boolean type in Oracle databases, similar to the BIT datatype in Ms SQL Server?
11 Answers
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Oracle: how to UPSERT (update or insert into a table?)
...before the insert regardless of how many concurrent calls are made to same SQL code. Worst case, you may get lots of contention and Oracle will take much longer to reach a final state.
– Neo
Nov 6 '12 at 13:23
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How to split a string literal across multiple lines in C / Objective-C?
I have a pretty long sqlite query:
9 Answers
9
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构建具有多个屏幕的应用程序 · App Inventor 2 中文网
...或多个这些因素，而后果可能会非常令人不快。 这可能包括：
块编辑器运行越来越慢，
以及 App Inventor 无法构建你的项目。
在极端情况下，你可能会超出 App Inventor 保存或加载项目的能力：你将无法查看甚至无法修复你...
Postgis installation: type “geometry” does not exist
...eate table with Postgis. I do it by this page . But when I import postgis.sql file, I get a lot of errors:
10 Answers
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Postgres: INSERT if does not exist already
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@TusharJain prior to PostgreSQL 9.5 you can do an "old fashioned" UPSERT (with CTE) but you may experience problems with race conditions and it will not be performant as 9.5 style. There is a good detail about upsert on this blog (in the updated area at...
What is causing this ActiveRecord::ReadOnlyRecord error?
... you use this option, saving the same
record will now fail. Use find_by_sql
to work around.
Using find_by_sql is not really an alternative as it returns raw row/column data, not ActiveRecords. You have two options:
Force the instance variable @readonly to false in the record (hack)
Use :in...