大约有 6,000 项符合查询结果（耗时：0.0160秒） [XML]
Should programmers use SSIS, and if so, why? [closed]
...points where the abstractions break down. To figure out what each "Execute SQL Task" or "Foreach Loop" does, I have to double click the damned thing and browse through a tree of literal values and expressions, scattered across multiple tabs.
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How to use SQL Order By statement to sort results case insensitive?
I have a SQLite database that I am trying to sort by Alphabetical order. The problem is, SQLite doesn't seem to consider A=a during sorting, thus I get results like this:
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为什么我们程序员写不出好代码？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...程序员则需要图书馆般那种安静的环境。虽然许多企业给包括程序员在内的员工提供了类似乒乓球这类的运动，但他们常常忘记，程序员需要在安静的环境下办公，否则，嘈杂的环境很容易分散程序员的注意力。
13.办公文化
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Difference between Select Unique and Select Distinct
I thought these were synonomous, but I wrote the following in Microsoft SQL:
5 Answers
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how do I query sql for a latest record date for each user
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When working with postgresql would this version be faster than using an IN (subquery) instead of the inner join?
– TheOne
Sep 7 '14 at 1:38
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How to write a foreach in SQL Server?
... an email or write to a file) rather than just shuffle stuff around within SQL, you need to use a cursor or something similar (not set logic). Likely people who come to SQL and try to do something RBAR they are coming to it as a programmer who needs it to do something useful like this.
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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...
Validation failed for one or more entities while saving changes to SQL Server Database using Entity
...DbEntityValidationException, DbUpdateException, datetime2 range errors (MS SQL), and include key of invalid entity in message (useful when savind many entities at one SaveChanges call).
First, override SaveChanges in DbContext class:
public class AppDbContext : DbContext
{
public override int ...
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...