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Generating a UUID in Postgres for Insert statement?
...d to run psql -d dbname -f SHAREDIR/contrib/module.sql and now it works!!! select uuid_generate_v1(); returns 1 now now. Thanks so much!
– anon58192932
Sep 29 '12 at 22:13
5
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BLE协议—广播和扫描 - 创客硬件开发 - 清泛IT社区，为创新赋能！
广播和扫描在无线通信中是非常重要的一个技术点。在BLE中，扫描和广播是通信的基础，用户可以直接用扫描和广播进行数据的传输（数据量不大，功耗要求较高的情况下），也可以在广播和扫描的基础上进行连接后点对点通信...
Android Studio with Google Play Services
...
Go to File -> Project Structure
Select 'Project Settings'
Select 'Dependencies' Tab
Click '+' and select '1.Library Dependencies'
Search for : com.google.android.gms:play-services
Select the latest version and click 'OK'
Voila! No need to fight with Grad...
Escape Character in SQL Server
...s the second answer shows it's possible to escape single quote like this:
select 'it''s escaped'
result will be
it's escaped
If you're concatenating SQL into a VARCHAR to execute (i.e. dynamic SQL), then I'd recommend parameterising the SQL. This has the benefit of helping guard against SQL in...
Xcode 6 Bug: Unknown class in Interface Builder file
... this issue when using Xcode 6 beta 4.
To resolve this issue, you need to select each of your custom class objects in Storyboard (this includes any custom views, even the custom view controllers themselves).
Then with those objects selected, open the identity inspector and under "Custom Class" you...
Your build failed due to an error in the AAPT stage, not because of an...
大概率是因为项目名称是中文导致的，换成英文的就ok，这个问题先记录下来，后续fun23.cn平台可以解决。
----------------以下是参考资料-----------
需要注意的事项：该项目已超过 30MB 的最大大小该项目已超出建议的最大 10 个...
Xcode + remove all breakpoints
...l breakpoints.
In Xcode4 press CMD(⌘)+6, in Xcode3 press CMD(⌘)+ALT+B.
Select all breakpoints with CMD(⌘)+A and delete them, like deleting text, with backspace.
There's no step 3 :)
share
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i...
Getting all selected checkboxes in an array
...
function get_selected_checkboxes_array(){ var ch_list=Array(); $("input:checkbox[type=checkbox]:checked").each(function(){ch_list.push($(this).val());}); ...
How to delete or add column in SQLITE?
... as long as you do a create new table first instead of a create from select, it will have all those things.
– John Lord
Jul 3 '19 at 15:28
1
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How can I use optional parameters in a T-SQL stored procedure?
...ame varchar(25) = null,
@Title varchar(25) = null
AS
BEGIN
SELECT ID, FirstName, LastName, Title
FROM tblUsers
WHERE
(@FirstName IS NULL OR (FirstName = @FirstName))
AND (@LastName IS NULL OR (LastName = @LastName ))
AND (@Tit...