大约有 6,000 项符合查询结果(耗时:0.0160秒) [XML]
Accessing Google Spreadsheets with C# using Google Data API
...y);" Tried to edit not enough characters changed !
– SQLBobScot
May 7 '15 at 18:47
5
...
Ruby on Rails: getting the max value from a DB column
Currently I can make the straight-up SQL query on my DB:
2 Answers
2
...
Paging with Oracle
... productOfferId+" productOfferName: "+ productOfferName);
String sql = "SELECT * FROM ( SELECT * FROM product_offer po WHERE po.deleted=0 AND (po.product_offer_id=? OR po.product_offer_name LIKE ? )" +
" ORDER BY po.PRODUCT_OFFER_ID asc) foo OFFSET ? ROWS FETCH NEXT ? ROWS ONL...
What are the differences between a clustered and a non-clustered index?
...should be set on a field that is normally incremental ie Id or Timestamp.
SQL Server will normally only use an index if its selectivity is above 95%.
share
|
improve this answer
|
...
Spring Boot JPA - configuring auto reconnect
...onfiguring the DataSource for you. In this case, and since you are using MySQL, you can add the following to your application.properties up to 1.3
spring.datasource.testOnBorrow=true
spring.datasource.validationQuery=SELECT 1
As djxak noted in the comment, 1.4+ defines specific namespaces for the...
A potentially dangerous Request.Form value was detected from the client
...ote character on the other hand is dangerous when interpolating strings in SQL queries, but perfectly safe if it is a part of a name submitted from a form or read from a database field.
The bottom line is: you can't filter random input for dangerous characters, because any character may be dangerous...
Difference between rake db:migrate db:reset and db:schema:load
.../schema.rb.
db:structure:load - Recreates the database from the structure.sql file.
db:structure:dump - Dumps the current environment’s schema to db/structure.sql.
(You can specify another file with SCHEMA=db/my_structure.sql)
db:setup Runs db:create, db:schema:load and db:seed.
db:reset Runs...
Get record counts for all tables in MySQL database
Is there a way to get the count of rows in all tables in a MySQL database without running a SELECT count() on each table?
...
How to get distinct values for non-key column fields in Laravel?
... (you can use it, but you shouldn't use it). You should use distinct. In MySQL you can use DISTINCT for a column and add more columns to the resultset: "SELECT DISTINCT name, id, email FROM users". With eloquent you can do this with $this->select(['name', 'id', 'email'])->distinct()->get();...
Why am I getting this error: No mapping specified for the following EntitySet/AssociationSet - Entit
...
How would you handle schema updating for already deployed SQL Server CE database ? Can move this to a separate question, if it's totally unrelated procedure
– FYK
Aug 20 '15 at 6:32
...