大约有 6,000 项符合查询结果（耗时：0.0207秒） [XML]
Is it possible to roll back CREATE TABLE and ALTER TABLE statements in major SQL databases?
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http://wiki.postgresql.org/wiki/Transactional_DDL_in_PostgreSQL:_A_Competitive_Analysis provides an overview of this issue from PostgreSQL's perspective.
Is DDL transactional according to this document?
PostgreSQL - yes
MySQL - no; DDL cause...
Using a Single Row configuration table in SQL Server database. Bad idea?
...le rows in the "special" single row settings table. I overcame this by (in SQL Server):
adding a new bit column with a default value of 0
creating a check constraint to ensure that this column has a value of 0
creating a unique constraint on the bit column
This means that only one row can exist in...
MySQL Insert into multiple tables? (Database normalization?)
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No, you can't insert into multiple tables in one MySQL command. You can however use transactions.
BEGIN;
INSERT INTO users (username, password)
VALUES('test', 'test');
INSERT INTO profiles (userid, bio, homepage)
VALUES(LAST_INSERT_ID(),'Hello world!', 'http://www.stack...
Fetch the row which has the Max value for a column
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Anyone care to post a link to the MySQL equivalent of this, if there is one?
– redolent
Jan 10 '15 at 2:35
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SQLAlchemy IN clause
I'm trying to do this query in sqlalchemy
6 Answers
6
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How to do a join in linq to sql with method syntax?
I have seen lots of examples in LINQ to SQL examples on how to do a join in query syntax but I am wondering how to do it with method syntax? For example how might I do the following
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How do I get the size of a java.sql.ResultSet?
...his method to calculate ResultSet size. This is great...no use of an extra SQL parameter. Please comment on this method.
– Madeyedexter
Mar 13 '15 at 5:21
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Why should you use an ORM? [closed]
...nd portable. ORM implementation classes know how to write vendor-specific SQL, so you don't have to.
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Truncating all tables in a Postgres database
I regularly need to delete all the data from my PostgreSQL database before a rebuild. How would I do this directly in SQL?
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Rails 4 LIKE query - ActiveRecord adds quotes
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Isn't this vulnerable to SQL Injection? I mean, are those search strings sanitized?
– jdscosta91
Oct 16 '14 at 17:08
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