大约有 40,000 项符合查询结果（耗时：0.0349秒） [XML]
How can I check if a View exists in a Database?
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I like this one. You can use 'u' for tables as well.
– Phillip Senn
Oct 10 '15 at 22:47
2
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How to implement has_many :through relationships with Mongoid and mongodb?
...ongs_to_many :physicians
end
In other words you would eliminate the join table and it would have a similar effect to has_many :through in terms of access to the 'other side'. But in your case thats probably not appropriate because your join table is an Appointment class which carries some extra in...
What is the syntax for an inner join in LINQ to SQL?
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It goes something like:
from t1 in db.Table1
join t2 in db.Table2 on t1.field equals t2.field
select new { t1.field2, t2.field3}
It would be nice to have sensible names and fields for your tables for a better example. :)
Update
I think for your query this mig...
How to use Servlets and Ajax?
...gt; as JSON
Here's an example which displays List<Product> in a <table> where the Product class has the properties Long id, String name and BigDecimal price. The servlet:
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, I...
How to report an error from a SQL Server user-defined function
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For an inline-table-valued-function where the RETURN is a simple select, this alone doesn't work because nothing is returned - not even null, and in my case I wanted to throw an error when nothing was found. I didn't want to break down th...
Automatic TOC in github-flavoured-markdown
Is it possible to generate an automatic Table of Contents using Github Flavoured Markdown ?
17 Answers
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Access denied for user 'root@localhost' (using password:NO)
...not use the privilege system of MySQL.
[root ~]# mysqld_safe --skip-grant-tables &
At this moment, the terminal will seem to halt. Let that be, and use new terminal for next steps.
enter the mysql command prompt
[root ~]# mysql -u root
mysql>
Fix the permission setting of the roo...
Optimal way to concatenate/aggregate strings
...r,
COUNT(*) OVER (PARTITION BY ID) AS NameCount
FROM dbo.SourceTable
),
Concatenated AS
(
SELECT
ID,
CAST(Name AS nvarchar) AS FullName,
Name,
NameNumber,
NameCount
FROM Partitioned
WHERE NameNumber = 1
UNION ALL
SELECT...
How do I convert from BLOB to TEXT in MySQL?
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Usage: SELECT CONVERT(column USING utf8) FROM table;
– bmaupin
Oct 2 '12 at 19:32
4
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How to compare dates in datetime fields in Postgresql?
...tween dates in postgresql(version 9.2.4 in windows). I have a column in my table say update_date with type 'timestamp without timezone'. Client can search over this field with only date (i.e: 2013-05-03) or date with time (i.e: 2013-05-03 12:20:00). This column has the value as timestamp for all row...