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Store query result in a variable using in PL/pgSQL
How to assign the result of a query to a variable in PL/pgSQL, the procedural language of PostgreSQL?
5 Answers
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刘强东“一元年薪”背后的O2O棋局 - 资讯 - 清泛网 - 专注C/C++及内核技术
...东将持有永辉超市10%的股份。并拥有提名永辉两名董事(包括一名
独立董事)的权利。双方将主要通过联合采购的方式，加强供应链管理能力，并会继续探索O2O等领域战略合作的发展机遇。
唐兴通认为，入股永辉超市是京东从物...
IN clause and placeholders
I'm attempting to do the following SQL query within Android:
9 Answers
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Are there any disadvantages to always using nvarchar(MAX)?
In SQL Server 2005, are there any disadvantages to making all character fields nvarchar(MAX) rather than specifying a length explicitly, e.g. nvarchar(255)? (Apart from the obvious one that you aren't able to limit the field length at the database level)
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Max return value if empty query
...on the result. I also think (I haven't tested this yet) that the generated SQL would use an extra subselect query by doing that, while mine would just deal with an empty set by returning null. Thanks for the upvote and feedback! ;)
– CptRobby
Nov 22 '16 at 14:3...
How do I check if an index exists on a table field in MySQL?
...Use SHOW INDEX like so:
SHOW INDEX FROM [tablename]
Docs: https://dev.mysql.com/doc/refman/5.0/en/show-index.html
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IEnumerable vs List - What to Use? How do they work?
... and possibly optimize the program. Remember how LINQ doesn't generate the SQL to query the database until you enumerate it? Consider this:
public IEnumerable<Animals> AllSpotted()
{
return from a in Zoo.Animals
where a.coat.HasSpots == true
select a;
}
public IEnum...
How do I select an entire row which has the largest ID in the table?
...ow profiles and it appears our solutions have the same performance using MySQL. For my own knowledge, do you know what DBMS has poorer performance for subselects?
– unutbu
Feb 7 '14 at 20:08
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What does collation mean?
What does collation mean in SQL, and what does it do?
9 Answers
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How to add 'ON DELETE CASCADE' in ALTER TABLE statement
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Just tested in SqlServer, but possible you have to chance go with semi-colon as in postgres and SqlServer itself. But the remain core codes are sql standar. Test with semi-colons, I just changed it
– David Silva-Barrer...