大约有 5,880 项符合查询结果（耗时：0.0300秒） [XML]
How do I check if a SQL Server text column is empty?
I am using SQL Server 2005. I have a table with a text column and I have many rows in the table where the value of this column is not null, but it is empty. Trying to compare against '' yields this response:
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Debugging sqlite database on the device
... debuggable, you can use the shell run-as command to run a command or executable as a specific user/application or just switch to the UID of your application so you can access its data directory.
So if you wish to pull your application database from the device you should run the debug build of the...
SQLite - increase value by a certain number
is it possible to increase a certain value in a table by a certain number without reading last value and afterwards updating it?
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Joins are for lazy people?
...d that using joins is less efficient than making several requests and link tables in the code (C# or Java).
21 Answers
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What is @RenderSection in asp.net MVC
...p>
<a asp-action="Create">Create New</a>
</p>
<table class="table">
<thead>
// do something ...
</thead>
<tbody>
// do something ...
</tbody>
</table>
//Added my custom scripts in the scripts sections
@...
Cleanest way to build an SQL string in Java
...pared statements:
PreparedStatement stm = c.prepareStatement("UPDATE user_table SET name=? WHERE id=?");
stm.setString(1, "the name");
stm.setInt(2, 345);
stm.executeUpdate();
The other thing that can be done is to keep all queries in properties file. For example
in a queries.properties file can ...
Make body have 100% of the browser height
...the best solution:
html {
width: 100%;
height: 100%;
display: table;
}
body {
width: 100%;
display: table-cell;
}
html, body {
margin: 0px;
padding: 0px;
}
It is dynamic in that the html and the body elements will expand automatically if their contents overflow. I t...
Center a DIV horizontally and vertically [duplicate]
...
Nice to have a version without table-cell, thanks.
– devlord
Dec 20 '13 at 19:01
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Unknown column in 'field list' error on MySQL Update query
...er inside single quotes; e.g.:
$name = "my name"
$query = " INSERT INTO mytable VALUES ( 1 , '$name') "
Note that although the query is enclosed between double quotes, you must enclose any string in single quotes.
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Group query results by month and year in postgresql
I have the following database table on a Postgres server:
7 Answers
7
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