大约有 6,100 项符合查询结果（耗时：0.0278秒） [XML]
View contents of database file in Android Studio
...-db-name>.db
6- run sqlite3 commands that you like eg:
Select * from table1 where ...;
Note: Find more commands to run below.
SQLite cheatsheet
There are a few steps to see the tables in an SQLite database:
List the tables in your database:
.tables
List how the table looks:
.schem...
Introducing FOREIGN KEY constraint may cause cycles or multiple cascade paths - why?
...
I had a table that had a circular relationship with others and i was getting the same error. Turns out it is about the foreign key which was not nullable. If key is not nullable related object must be deleted and circular relations d...
Row count with PDO
...
$sql = "SELECT count(*) FROM `table` WHERE foo = ?";
$result = $con->prepare($sql);
$result->execute([$bar]);
$number_of_rows = $result->fetchColumn();
Not the most elegant way to do it, plus it involves an extra query.
PDO has PDOStatemen...
How to make an image center (vertically & horizontally) inside a bigger div [duplicate]
...
another way is to create a table with valign, of course. This would work regardless of you knowing the div's height or not.
<div>
<table width="100%" height="100%" align="center" valign="center">
<tr><td>
<img sr...
Could not find stored procedure 'dbo.aspnet_CheckSchemaVersion'
...here to run above command then you can simply run 'aspnet_regsql.exe' executable file.
In order to locate this file open your RUN Command Box by pressing Windows Key + r and put below command in that %windir%\Microsoft.NET\Framework\v4.0.30319 and Hit enter then find 'aspnet_regsql.exe' file. It wi...
How to use ng-repeat without an html element
... on tbody? (AFAIK, it is okay to have multiple <tbody>s in a single table.)
<tbody ng-repeat="row in array">
<tr ng-repeat="item in row">
<td>{{item}}</td>
</tr>
</tbody>
...
Entity Framework Code First - Advantages and disadvantages of Fluent Api vs Data Annotations [closed
.....)
Specification of inheritance mapping between object model and database tables (Table-Per-Hierarchy, Table-Per-Type, Table-Per-Concrete-Class):
.Map<TDerived>(Action<EntityMappingConfiguration<TDerived>> ...)
Edit: Microsoft considers the Fluent API as an "advanced feature" (...
Explaining difference between automaticallyAdjustsScrollViewInsets, extendedLayoutIncludesOpaqueBars
...his property is used when your view is a UIScrollView or similar, like a UITableView. You want your table to start where the navigation bar ends, because you wont see the whole content if not, but at the same time you want your table to cover the whole screen when scrolling. In that case, setting ed...
Select SQL Server database size
...
ALTER FUNCTION [dbo].[GetDBSize]
(
@db_name NVARCHAR(100)
)
RETURNS TABLE
AS
RETURN
SELECT
database_name = DB_NAME(database_id)
, log_size_mb = CAST(SUM(CASE WHEN type_desc = 'LOG' THEN size END) * 8. / 1024 AS DECIMAL(8,2))
, row_size_mb = CAST(SUM(CASE WHEN type_desc...
Mechanisms for tracking DB schema changes [closed]
...mber of files numbered 1.sql, 2.sql, 3.sql, etc. The script uses one extra table to store the current version number of the database. The N.sql files are crafted by hand, to go from version (N-1) to version N of the database.
They can be used to add tables, add columns, migrate data from an old to ...