Is there an A5 command that will empty all the tables in the database. I need to get rid of my test data. I could zap each table in a script but if there a better method it would be worth knowing. I could not find anything in the documentation or on the message board, but I was probably using wrong search terms. My database is the native .dbf
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Try a Search First
It is highly recommended that a Search be done on your topic before posting, as many questions have been answered in prior posts. As with any search engine, the shorter the search term, the more "hits" will be returned, but the more specific the search term is, the greater the relevance of those "hits". Searching for "table" might well return every message on the board while "tablesum" would greatly restrict the number of messages returned.
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First, make sure you are posting your question in the correct forum. For example, if you post an issue regarding Desktop applications on the Mobile & Browser Applications board , not only will your question not be seen by the appropriate audience, it may also be removed or relocated.
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Clearing test data from a database (.dbf)
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Re: Clearing test data from a database (.dbf)
John,
I can't say I understand Dave's suggestion, but if it doesn't help, add a script with the code below in it, make a copy of the entire database (i.e., make sure you have a backup), then from the Control Panel code section, run the script, selecting all or a subset of the tables you want emptied. Note: I am not 100% sure the code to compact the DB is necessary but I think it is. Unless I am missing something, this should leave your database intact but empty of all data. Notice that you don't have to empty all tables if a few of them contain generic data you need to keep. The size of my dialog is fairly large (80,25)--you could adjust that if needed.
Raymond Lyons
EDIT: the code below has been replaced with better code in a later post below.
Code:table_names = A5_TABLE_ENUM_ACTUAL(.f.) DIM Shared v_tbl_choice as c DIM choice_list as c choice_list = table_names Dim headingText as c headingText = <<%txt% %txt% dim defaultValue as c defaultValue = "" v_tbl_choice = ui_get_check2("Select Tables",defaultValue,choice_list,headingText,.t.,.t.,.t.,80,25,.t.,"Horizontal",.f.) for each foo in v_tbl_Choice tbl = table.open(A_DB_CURRENT_PATH+foo.value,FILE_RW_EXCLUSIVE) TBL.ZAP(.T.) TBL.CLOSE() next a5_databasecompact(.F.)
Last edited by Raymond Lyons; 04-14-2013, 02:34 PM.
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Re: Clearing test data from a database (.dbf)
John (and others),
The code I gave previously will work but a much better (and clearer) version appears below.
Code:dim response as n response=ui_msg_box("Warning","To empty tables they must be closed. If a form or browse based on a table (or set containing that table) is open, you must close it before proceeding."+crlf(2)+"Have you closed all relevant forms and browses?",UI_QUESTION_SYMBOL+UI_YES_NO) if response = 7 'no end end if dim table_names as c table_names = A5_TABLE_ENUM_ACTUAL(.f.) 'now alphabetize the table names table_names = sortsubstr(table_names, crlf()) Dim headingText as c headingText = <<%txt% If a table being open gives an error, that table and all those after it will not be emptied. %txt% dim defaultValue as c defaultValue = "" DIM tables_to_delete as p 'returns .LastButton and .Selected tables_to_delete=ui_get_check2p("Tables to Empty-Zap", defaultValue, table_names, HeadingText, .t., .t., .f., 80, 25) If tables_to_delete.LastButton="".or.tables_to_delete.LastButton="Cancel" msgbox("Operation Status","Canceled") end end if for each foo in tables_to_delete.selected tbl = table.open(A_DB_CURRENT_PATH+foo.value,FILE_RW_EXCLUSIVE) TBL.ZAP(.T.) TBL.PACK() TBL.CLOSE() next
2nd Edit: Changed inaccurate "Delete" to "Empty-Zap" in code. One could probably use similar code for a multi-table delete routine, but that's not how I came up with the code.
Raymond LyonsLast edited by Raymond Lyons; 04-14-2013, 06:28 PM.
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