1. Personnel organization structure
2, conceptual model
New conceptual model
< /p> 650) this.width=650;” src=”/wp-content/uploadshttp:/img.voidcn.com/vcimg/static/loading.png “tit
Month: September 2021
SQLite’s goal
1) Find the duplicate records and classify them into a new table. max(id) is the record you want to delete
create table ttt as select gallery_url ,max(id) as< /span> theid from gallery group
Sleep caused by SQLite during execution
Is there a similar SQL expression that sleeps like MS SQL WAITFOR sqlite?
Or, is there a way to make sqlite SQL queries run for a long time without adding many rows to the database?
Thi
PowerDesigner common skill
PowerDesigner is a very powerful database design software. Skilled use of PowerDesigner can make database design efficient and concise. The specific operations of PowerDesign are described in detai
Generate a table structure to the Word document using PowerDesigner
Sometimes, when writing various system-related documents, you need to add the structure of the database table to the document. If you manually If you add it, it’s very ridiculous.
There are m
How to execute multiple RSQLite statements at a time or how to dump the entire file?
Using RSQLite to build a SQLite database I want to send multiple statements at once-is this possible?
Why these don’t work:
sql <- readLines("createtables.sql") dbSendQuery(con,sql ) ……
iPad SDK: How to hook to MPMOVIEPLAYERVIEWCONTROLLER’s finishing button?
I am creating an iPad add, I am using MPMoviePlayerViewController to play the video.
The video occupies the entire iPad screen.
playerViewController.view.frame = self.view.frame; I need
PowerDesigner exports data table structure to Excel all table structure in the same sheet
Option Explicit
Dim rowsNum
rowsNum = 0
‘————————————————- —————————-
‘Main function
‘————————————————- —–
PowerDesigner imports PowerDesigner in accordance with the Excel design data table structure
Option Explicit
Dim shet, cnt
‘————————————————- –
‘For each shet in array(“Sheet1”, “Sheet2”, “Sheet3″…)
‘————————————————- –
Dim
SQLITE C interface Get single-value results
When I enter Sqlite
SELECT Count(*) FROM tabl; It returns a Number.
How to use the C interface to get this number after preparing the statement?
Something like this:
sqlite3