大约有 7,000 项符合查询结果（耗时：0.0353秒） [XML]
What's the difference between a catalog and a schema in a relational database?
...ppings (external/conceptual, conceptual/internal) are kept.
In other words, the catalog contains detailed information (sometimes called descriptor information or metadata) regarding the various objects that are of interest to the system itself.
For example, the optimizer uses catalog info...
How to remove line breaks from a file in Java?
...t.replace("\r\n", " ").replace("\n", " "); is a better solution: otherwise words will be "glued" to each other (without the single-space replacement).
– Bart Kiers
Jan 29 '10 at 15:54
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Vim: faster way to select blocks of text in visual mode
...select the range of text matching your search; i.e: find and select (whole word) your search term?
– Daniel Park
Oct 30 '13 at 21:54
5
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round() for float in C++
...n:
float roundf(x)
{
int signbit;
__uint32_t w;
/* Most significant word, least significant word. */
int exponent_less_127;
GET_FLOAT_WORD(w, x);
/* Extract sign bit. */
signbit = w & 0x80000000;
/* Extract exponent field. */
exponent_less_127 = (int)((w & 0x7f800000) &...
What is cardinality in MySQL?
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What's with this fetish for big words. "Distinctness" would work fine isn't it?
– Pacerier
Feb 1 '15 at 23:14
9
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Database, Table and Column Naming Conventions? [closed]
... Hungarian-esque Constraint Prefixes and worst of all SPACES " " for multi-word table names. Additionally system tables for SQLServer use plurals so it seems AdventureWorks was the black sheep in this bunch.
– Marcus Pope
Mar 20 '12 at 20:09
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Regular expression for exact match of a string
I want to match two passwords with regular expression. For example I have two inputs "123456" and "1234567" then the result should be not match (false). And when I have entered "123456" and "123456" then the result should be match (true).
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Checking if a field contains a string
...dex can be large. It contains one index entry for each unique post-stemmed word in each indexed field for each document inserted.
A text index will take longer to build than a normal index.
A text index does not store phrases or information about the proximity of words in the documents. As a result,...
Insert into a MySQL table or update if exists
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"transgress" is not the word you're looking for :) Unfortunately, now I've seen "transgress", I can no longer visualise the actual word..
– mwfearnley
Apr 13 '17 at 7:47
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What is MOJO in Maven?
I'm reading about Maven right now and everywhere in a text I see this word (mojo). I approximately understand what it means, but I would not refuse from a good explanation. I tried to google, but found only non-maven explanations.
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