sqlite add new lines to the file



  • Available sqlite OBD. I'm exporting. sqlite3 in the file, for example file_test♪ I want to do a new export after a while. file_test, just new lines?

    As long as it comes to mind, you annoyant to export to a new file. sqlite3 > file_test_1And then it's about to compare two files. This may be implemented by means sqlite3



  • Corrected the reply because it did not understand the destination of imports: There's an import team in sqlite that's gonna be from the outside file and put it in the base. What you're describing is called export.

    There's nothing wrong with getting back into the file and rewriting the data. For the outside user, it'll look like a new line has been completed. If the base isn't too big, it'll work fast enough.

    If the big file and the lines are only to be signed, then you can go another way. To do that, you need to know the id of the last line removed. It can be extracted from an exportable file or retained separately by a sample select max(id) from your_table

    According to the documentation, https://www.sqlite.org/cli.html This is the case.

    sqlite> .header on
    sqlite> .mode csv
    sqlite> .once c:/work/dataout.csv
    sqlite> SELECT * FROM tab1;
    sqlite> .system c:/work/dataout.csv
    

    To make exports only "chvost," you need to modify the request a little. Somewhere.

    SELECT * FROM tab1 where id > !put here your saved id!;
    

    There's only one thing left to put it in the head.

    It's different if they're not. In this case, it is a little more complicated and less reliable. We need to remember/leash the lines that have already been exported and then use the offset. But there won't be a limit to offset, so we're referring to a very large number instead.

    SELECT * FROM tab1 limit 1000000 offset !put here your saved id!;
    



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