大约有 40,000 项符合查询结果(耗时:0.0167秒) [XML]

https://stackoverflow.com/ques... 

Select data from date range between two dates

...uch more simple (only two cases against four). Your SQL will look like: SELECT * FROM Product_sales WHERE NOT (From_date > @RangeTill OR To_date < @RangeFrom) share | improve this answer ...
https://stackoverflow.com/ques... 

SQL query return data from multiple tables

...rows affected (0.00 sec) Records: 5 Duplicates: 0 Warnings: 0 mysql> select * from colors; +----+-------+----------+ | id | color | paint | +----+-------+----------+ | 1 | Red | Metallic | | 2 | Green | Gloss | | 3 | Blue | Metallic | | 4 | White | Gloss | | 5 | Black | Gloss ...
https://stackoverflow.com/ques... 

In MySQL, how to copy the content of one table to another table within the same database?

... INSERT INTO TARGET_TABLE SELECT * FROM SOURCE_TABLE; EDIT: or if the tables have different structures you can also: INSERT INTO TARGET_TABLE (`col1`,`col2`) SELECT `col1`,`col2` FROM SOURCE_TABLE; EDIT: to constrain this.. INSERT INTO TARGET_TAB...
https://stackoverflow.com/ques... 

must appear in the GROUP BY clause or be used in an aggregate function

... Yes, this is a common aggregation problem. Before SQL3 (1999), the selected fields must appear in the GROUP BY clause[*]. To workaround this issue, you must calculate the aggregate in a sub-query and then join it with itself to get the additional columns you'd need to show: SELECT m.cname...
https://stackoverflow.com/ques... 

How to retrieve the current value of an oracle sequence without increment it?

... SELECT last_number FROM all_sequences WHERE sequence_owner = '<sequence owner>' AND sequence_name = '<sequence_name>'; You can get a variety of sequence metadata from user_sequences, all_sequences and dba_...
https://stackoverflow.com/ques... 

MySQL ON vs USING?

...n tables ON a column, a set of columns and even a condition. For example: SELECT * FROM world.City JOIN world.Country ON (City.CountryCode = Country.Code) WHERE ... USING is useful when both tables share a column of the exact same name on which they join. In this case, one may say: SELECT ... FR...
https://stackoverflow.com/ques... 

What is the error “Every derived table must have its own alias” in MySQL?

...er), which can the be used to refer to it in the rest of the outer query. SELECT ID FROM ( SELECT ID, msisdn FROM ( SELECT * FROM TT2 ) AS T ) AS T In your case, of course, the entire query could be replaced with: SELECT ID FROM TT2 ...
https://stackoverflow.com/ques... 

how do I query sql for a latest record date for each user

... select t.username, t.date, t.value from MyTable t inner join ( select username, max(date) as MaxDate from MyTable group by username ) tm on t.username = tm.username and t.date = tm.MaxDate ...
https://stackoverflow.com/ques... 

How to Join to first row

... SELECT Orders.OrderNumber, LineItems.Quantity, LineItems.Description FROM Orders JOIN LineItems ON LineItems.LineItemGUID = ( SELECT TOP 1 LineItemGUID FROM LineItems W...
https://stackoverflow.com/ques... 

How to deal with SQL column names that look like SQL keywords?

...ange the name because I didn't make it. Am I allowed to do something like SELECT from FROM TableName or is there a special syntax to avoid the SQL Server being confused? ...