大约有 44,000 项符合查询结果（耗时：0.0384秒） [XML]
Select statement to find duplicates on certain fields
...get the list of fields for which there are multiple records, you can use..
select field1,field2,field3, count(*)
from table_name
group by field1,field2,field3
having count(*) > 1
Check this link for more information on how to delete the rows.
http://support.microsoft.com/kb/139444
There sh...
jQuery get value of select onChange
I was under the impression that I could get the value of a select input by doing this $(this).val(); and applying the onchange parameter to the select field.
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Remove excess whitespace from within a string
... @Gigala "What would be the best way to remove the inner whitespace characters?" was the question. This answer satisfies that perfectly.
– Cory Dee
Sep 13 '13 at 17:14
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SQL DROP TABLE foreign key constraint
...your table, you could use this SQL (if you're on SQL Server 2005 and up):
SELECT *
FROM sys.foreign_keys
WHERE referenced_object_id = object_id('Student')
and if there are any, with this statement here, you could create SQL statements to actually drop those FK relations:
SELECT
'ALTER TABL...
How to put more than 1000 values into an Oracle IN clause [duplicate]
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Put the values in a temporary table and then do a select where id in (select id from temptable)
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IN clause and placeholders
...mes = { "name1", "name2" }; // do whatever is needed first
String query = "SELECT * FROM table"
+ " WHERE name IN (" + makePlaceholders(names.length) + ")";
Cursor cursor = mDb.rawQuery(query, names);
Just make sure to pass exactly as many values as places. The default maximum limit of host pa...
Arrays vs Vectors: Introductory Similarities and Differences [closed]
..., library, operating system). Some APIs will have entry points like strcat(char * dst, char * src), where the dst and src are treated as arrays of characters (even though the function signature implies pointers to characters).
– John Källén
Feb 26 '13 at 0:33...
Difference between “read commited” and “repeatable read”
...nd consider you have a simple task like the following:
BEGIN TRANSACTION;
SELECT * FROM T;
WAITFOR DELAY '00:01:00'
SELECT * FROM T;
COMMIT;
That is a simple task that issue two reads from table T, with a delay of 1 minute between them.
under READ COMMITTED, the second SELECT may return any da...
Convert integer into its character equivalent, where 0 => a, 1 => b, etc
I want to convert an integer into its character equivalent based on the alphabet. For example:
12 Answers
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MySQL: Selecting multiple fields into multiple variables in a stored procedure
Can I SELECT multiple columns into multiple variables within the same select query in MySQL?
3 Answers
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