I import millions of rows from a tab file, and the SQLite .import .mode tab is very slow. I have three indexes, so maybe the index is slow. But first I want to check Does .import group batches/all
Month: September 2021
PowerDesigner (7) – Object-oriented model (with example, sequence diagram, class diagram, generating Java source code and Java source code generation class)
The original text is from: http://www.voidcn.com/article/p-owwcfxjt-oy.html
The object-oriented model is a model that uses UML (Unified Modeling Language) graphics to describe the system stru
The objects in PowerDesigner16 are invalid, and there is no solution to the extension attribute problem.
The object in PowerDesigner16 is invalid and no extended attributes are allowed
message 15135, level 16, state 1, process sp_addextendedproperty, line 37The object is invalid. ‘XXXXXXX’ does
Use of SQLITE and SQLite Database Clean up under .NET
Original text: The use of Sqlite under .NET and the cleanup of Sqlite database
Sqlite is a lightweight relational database, and I will not go into details about its benefits. The original int
iPad – WillrotateTointerfaceorientation is not called on iOS8
I used the VFR PDF viewer library in my application, so I made this point:
ReaderDocument *document = [ReaderDocument withDocumentFilePath:pdfFile password:nil];
ReaderViewController *vc = [[
SQLITE3 date and interval function
I want to know whether sqlite3 supports the interval function. PostgreSQL accepts the following statement, but sqlite3 cannot parse it;
select< br /> …
from
orders
where
…
and o_order
iPad – WillrotateTointerfaceorientation does not call from the presentation of ViewController
I use this configured uiviewcontroller on the ipad:
shouldAutorotate(true)
supportedInterfaceOrientations(UIInterfaceOrientationMaskAll)
and in willRotateToInterfaceOrientation Perform some t
How to delete all empty tables in SQLITE?
I want to delete all tables without rows.
How to delete all empty tables in SQLite?
Edit
I need to do this on my mobile phone (without casing). On a Windows Mobile phone.
1) Get a
SQLAlChemy SQLite multi-threaded settings
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy import create_engine
from sqlalchemy import Column, String, Integer
from sqlalchemy.pool import SingletonThreadPool < p>
<
PowerDesigner (1) -PowerDesigner Overview (System Analysis and Modeling)
Original source: http:// www.voidcn.com/article/p-xurhznkn-oy.html
PowerDesigner is a CASE (Computer Aided Software Engineering) tool launched by Sybase that integrates enterprise architectur