大约有 43,000 项符合查询结果（耗时：0.0642秒） [XML]
Oracle find a constraint
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select * from all_constraints
where owner = '<NAME>'
and constraint_name = 'SYS_C00381400'
/
Like all data dictionary views, this a USER_CONSTRAINTS view if you just want to check your current schema and a DBA_CONSTRAINTS view for administration users.
The construction of th...
On duplicate key ignore? [duplicate]
I'm trying to finish this query; my tag field is set to UNIQUE and I simply want the database to ignore any duplicate tag.
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python ? (conditional/ternary) operator for assignments [duplicate]
C and many other languages have a conditional (aka ternary) operator. This allows you to make very terse choices between two values based on the truth of a condition, which makes expressions, including assignments, very concise.
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“Collection was mutated while being enumerated” on executeFetchRequest
I'm stuck on a problem for hours now and having read everything about this on stackoverflow (and apply every advices found), I'm now officially in need for help. ;o)
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Eclipse keyboard shortcut to indent source code to the left?
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In my copy, Shift + Tab does this, as long as I have a code selection, and am in a code window.
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IntelliJ: How to auto-highlight variables like in Eclipse
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Using 2016.2 and this doesn't work at all. The setting was on by default, but it's not highlighting the variable my cursor is on (unless it is somehow the same colour as the non-highlight?)
– Adam
No...
Get boolean from database using Android and SQLite
How can I obtain the value of a boolean field in an SQLite database on Android?
10 Answers
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Good beginners tutorial to socket.io? [closed]
I am very new to the world of webdevelopment and jumped into the bandwagon because I find the concept of HTML5 very interesting. I am fairly confident on working with canvas and would now like to move over to websockets part of it. I have come to understand socket.io is by far the framework to work ...
Transition of background-color
...ar as I know, transitions currently work in Safari, Chrome, Firefox, Opera and Internet Explorer 10+.
This should produce a fade effect for you in these browsers:
a {
background-color: #FF0;
}
a:hover {
background-color: #AD310B;
-webkit-transition: background-color 1000ms l...
Converting string to numeric [duplicate]
I've imported a test file and tried to make a histogram
2 Answers
2
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