大约有 47,000 项符合查询结果(耗时:0.0233秒) [XML]

https://stackoverflow.com/ques... 

Combining “LIKE” and “IN” for SQL Server [duplicate]

... Effectively, the IN statement creates a series of OR statements... so SELECT * FROM table WHERE column IN (1, 2, 3) Is effectively SELECT * FROM table WHERE column = 1 OR column = 2 OR column = 3 And sadly, that is the route you'll have to take with your LIKE statements SELECT * FROM tabl...
https://stackoverflow.com/ques... 

SQL join: selecting the last records in a one-to-many relationship

... want to get a list of all customers along with their last purchase in one SELECT statement. What is the best practice? Any advice on building indexes? ...
https://stackoverflow.com/ques... 

Counting DISTINCT over multiple columns

... function turns the ints into varchars to make the distinct more reliable SELECT COUNT(DISTINCT (CHECKSUM(DocumentId,DocumentSessionId)) + CHECKSUM(REVERSE(DocumentId),REVERSE(DocumentSessionId)) ) FROM DocumentOutPutItems ...
https://stackoverflow.com/ques... 

jquery get all form elements: input, textarea & select

Is there an easy way (without listing them all separately) in jquery to select all form elements and only form elements. 12...
https://stackoverflow.com/ques... 

Is it possible to style a select box? [closed]

I've got an HTML select box that I need to style. I'd prefer to use just CSS but if I have to I'll use jQuery to fill in the gaps. ...
https://stackoverflow.com/ques... 

How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?

...dn't want the overhead of a function. I came up with the following query: SELECT myfield::integer FROM mytable WHERE myfield ~ E'^\\d+$'; Postgres shortcuts its conditionals, so you shouldn't get any non-integers hitting your ::integer cast. It also handles NULL values (they won't match the regex...
https://stackoverflow.com/ques... 

1052: Column 'id' in field list is ambiguous

...and tbl_section which has both the id field in them. How do I go about selecting the id field, because I always get this error: ...
https://stackoverflow.com/ques... 

SELECT * WHERE NOT EXISTS

...uming these tables should be joined on employeeID, use the following: SELECT * FROM employees e WHERE NOT EXISTS ( SELECT null FROM eotm_dyn d WHERE d.employeeID = e.id ) You can join these tables with a LEFT JOIN keyword and filter out the...
https://stackoverflow.com/ques... 

Get selected value in dropdown list using JavaScript

How do I get the selected value from a dropdown list using JavaScript? 28 Answers 28 ...
https://stackoverflow.com/ques... 

Select rows which are not present in other table

...task, all of them standard SQL. NOT EXISTS Often fastest in Postgres. SELECT ip FROM login_log l WHERE NOT EXISTS ( SELECT -- SELECT list mostly irrelevant; can just be empty in Postgres FROM ip_location WHERE ip = l.ip ); Also consider: What is easier to read in EXISTS...