How powerbuilder's datawindow executes insert command -

-

I am new to PowerBuilder and there is a lot of problem using the datawindows. I can not get my head around the inserting system Can someone explain this to me, or at least tell me in the right direction (articles, suggestions, etc ...)?

SQL generated by Datavindo controlled by updated properties (menu item rows / update attributes ...) goes. From there, you can select a single table and set the properties that will be used to generate the SQL. Where the clause ... determines which columns and their original values ​​are used in the WHERE section for UPDATEs and DELETEs. When you change the columns defined as the key (or allow the user to change), the main modification comes into play only if the updateable column is a list generating SQL (this UI can be used in one way or another Does not affect if allowed) The key column may be the primary key (which can be automatically populated with the primary key button, if you are using DBMS database Support calls to re may be), but it is not. (There are quite a few specific cases where you want to separate something.) If you found an identity column in the form of your key, then you can identify your data window and it will retrieve the value generated after the INSERT. After that, insert InsertRow () in DataWindow, DeleteRow (), SetItem () and, of course, give the user in the UI, this will change the data and status flags that are set to occur when SQL is generated The update will be called ().

All of these can be changed with the modified () function at run time so that you can update more than one table with a DataWindow. It has been implemented in the PowerBuilder Foundation class multi-table update service, so if you want to change these values ​​at run time, this is a good sample code.

Good luck,

Terry.


Comments

Post a Comment

Popular posts from this blog

windows - Heroku throws SQLITE3 Read only exception -

-
After I deploy the app to Heroku, I have to run migration scripts and get this error message ... ITES \ padrino \ prophetmargin & gt; Heroku Rack AR: Rack mutated! SQLite3 :: ReadOnlyException: only one try to write database to read: CREATE TABLE "schema_migrations" ( "version" varchar (255) NOT NULL) /disk1/home/slugs/215264_925fd2c_65a3/mnt/.bundle/gems/gems/ padrino-core- is 0.9.11 / lib / padrino-core / cli / rake.rb: 9: in `init ' how can this be? I also tried to run Heroku dbpush SQLite: //db/my-db.db and that did not work Horoku sqlite3 but using postgres does not do. I'm not sure why you are receiving this error, however, as I have used sqlite3 in development and when pushing it into its travel, they do some magic which migrates to postgrads. I'm absolutely sure how Heroku does 'backwash' this database but it seems that this is happening to you because it's the SQLite db file which is obviously due to Heroku's
Read more

lex - Building a lexical Analyzer in Java -

-
I am currently learning lexical analysis in compiler design. To know how a lexical analyzer actually works, I am trying to build myself. I am planning to make it in Java The input to the lexical analyzer is a .tex file that is of the following format. \ section {script} {intro} \ section {Scope} arbitrary text \ section {relevance} uncontrolled text \ subdivision (profit) arbitrary text \ subsubsection {in real life} \ subdivision {Ingredient} \ end {document} The output of the lecture may be a table of contents with a page number in another file. 1 Introduction 1 1.1 Scope 1 1.2 Relevance 2 1.2.1 Benefits 2 1.2.1.1 Real life 2 1.2.2 loss 3 I hope that This problem is within the scope of Language Analysis Read the .exe file and check '\' and continue to check whether it is actually on search In the sectioning command is set to indicate whether or not a flag variable is the type of sectioning. I hope the above approach will work for the construction of Lexa
Read more

python - rename keys in a dictionary -

-
I want to change the names of keys in a dictionary which are ints, and I need them so that the inputs with key zero They can sort correctly. For example, my keys are like this: '1', '101', '11' and I may need them: '001', '101', '011' What is doing, but I know that there is a better way tmpDict = {} in the ADC for the old: t MpDict ['% 04d'% int (olden)] = addict [oldkey] New controlled = tmpDict You are going wrong about this if you want to draw entries on a line in a specific way, then you have to sort on the extraction. for sorted (D, key = int): print '% s:% R'% (k, d [k]) < / Div>
Read more