大约有 3,620 项符合查询结果(耗时:0.0243秒) [XML]

https://stackoverflow.com/ques... 

Good Free Alternative To MS Access [closed]

...uestion, we're concerned with the raw database engine. With that in mind: SQLlite, Firebird, VistaDB (not free), SQL Server Compact Edition (not Express) and now SQL Server LocalDB all come to mind. Another thought: while the original question does ask about desktop databases, its likely some peop...
https://stackoverflow.com/ques... 

Entity Framework select distinct name

How can I do this SQL query with Entity Framework ? 8 Answers 8 ...
https://stackoverflow.com/ques... 

MySQL “Group By” and “Order By”

...on-aggregate columns in a SELECT with a GROUP BY clause is non-standard. MySQL will generally return the values of the first row it finds and discard the rest. Any ORDER BY clauses will only apply to the returned column value, not to the discarded ones. IMPORTANT UPDATE Selecting non-aggregate colum...
https://stackoverflow.com/ques... 

Select where count of one field is greater than one

...uld be a GROUP BY defined for proper valuation in the HAVING clause, but MySQL does allow hidden columns from the GROUP BY... Is this in preparation for a unique constraint on someField? Looks like it should be... share ...
https://stackoverflow.com/ques... 

How do you use the “WITH” clause in MySQL?

I am converting all my SQL Server queries to MySQL and my queries that have WITH in them are all failing. Here's an example: ...
https://stackoverflow.com/ques... 

MySQL ON DUPLICATE KEY UPDATE for multiple rows insert in single query

I have a SQL query where I want to insert multiple rows in single query. so I used something like: 3 Answers ...
https://stackoverflow.com/ques... 

What is a None value?

...as called with an argument or not. Other languages have similar concepts. SQL has NULL; JavaScript has undefined and null, etc. Note that in Python, variables exist by virtue of being used. You don't need to declare a variable first, so there are no really empty variables in Python. Setting a vari...
https://stackoverflow.com/ques... 

Why should I use document based database instead of relational database?

... aren't simply accessed via REST services, but require a much more complex SQL API. Often these API's (JDBC, ODBC, etc.) are quite complex. REST is quite simple. Ad-hoc and schema-free with a flat address space. Relational databases have complex, fixed schema. You define tables, columns, indexes...
https://stackoverflow.com/ques... 

Repair all tables in one go

... from command line you can use: mysqlcheck -A --auto-repair http://dev.mysql.com/doc/refman/5.0/en/mysqlcheck.html share | improve this answer | ...
https://stackoverflow.com/ques... 

MYSQL Dump only certain rows

I am trying to do a mysql dump of a few rows in my database. I can then use the dump to upload those few rows into another database. The code I have is working, but it dumps everything. How can I get mysqldump to only dump certain rows of a table? ...