大约有 40,000 项符合查询结果（耗时：0.0428秒） [XML]
HTML table with 100% width, with vertical scroll inside tbody [duplicate]
How can I set for <table> 100% width and put only inside <tbody> vertical scroll for some height?
13 Answer...
mysql - how many columns is too many?
I'm setting up a table that might have upwards of 70 columns. I'm now thinking about splitting it up as some of the data in the columns won't be needed every time the table is accessed. Then again, if I do this I'm left with having to use joins.
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Advantages of Binary Search Trees over Hash Tables
What are the advantages of binary search trees over hash tables?
18 Answers
18
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CROSS JOIN vs INNER JOIN in SQL
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Cross join does not combine the rows, if you have 100 rows in each table with 1 to 1 match, you get 10.000 results, Innerjoin will only return 100 rows in the same situation.
These 2 examples will return the same result:
Cross join
select * from table1 cross join table2 where table1.id = ...
jquery - fastest way to remove all rows from a very large table
I thought this might be a fast way to remove the contents of a very large table (3000 rows):
8 Answers
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What is the difference between “INNER JOIN” and “OUTER JOIN”?
... the outer parts of a Venn diagram union.
Examples
Suppose you have two tables, with a single column each, and data as follows:
A B
- -
1 3
2 4
3 5
4 6
Note that (1,2) are unique to A, (3,4) are common, and (5,6) are unique to B.
Inner join
An inner join using either of the...
How to list of all the tables defined for the database when using active record?
How do I get a list of all the tables defined for the database when using active record?
5 Answers
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MySql export schema without data
...nsider using the --single-transaction option if you don't want or can't do table locks.
– Jim
Jan 22 '13 at 21:55
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Fixed Table Cell Width
A lot of people still use tables to layout controls, data etc. - one example of this is the popular jqGrid. However, there is some magic happening that I cant seem to fathom (its tables for crying out loud, how much magic could there possibly be?)
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Search of table names
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I'm using this and works fine
SELECT * FROM INFORMATION_SCHEMA.TABLES
WHERE TABLE_NAME LIKE '%%'
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