Pycharm中SQLite数据库中的最大行数

Question

I am trying to create a sqlite database for an app in python.

So far my database contains one table and it contains 500 entries already, I think. I say this because that is what the built-in database tool in Pycharm tells me. I then created another table to contain the rest of the data. I think they did not go into the table because it wasn't showing in the database tool. So I created another database to insert the rest of the data.

When I tried to delete some of the data from the first database it deleted but replaced it with some of the data I previously thought hadn't been entered in the first place due to 500 rows limit. I did this in PyCharm and all along it had thrown to exceptions. The diver is used was the xerial driver.

What am I doing wrong and how can I get to put all the data in one table? The final table is going to have a little over 1000 entries.

Answer 1

SQLite has a theoretical maximum row count of 2 ⁶⁴ rows :

The theoretical maximum number of rows in a table is 2 ⁶⁴ (18446744073709551616 or about 1.8e+19). This limit is unreachable since the maximum database size of 140 terabytes will be reached first. A 140 terabytes database can hold no more than approximately 1e+13 rows, and then only if there are no indices and if each row contains very little data.

PyCharm displays database results in pages of a fixed size; use the paging controls (the left and right arrow buttons in the result page toolbar) to page through the results.

You can adjust the page size in your settings, see IDE settings -> database . I strongly suspect that the default is set to 500.

A more reliable way to count your current rows is to query the database:

SELECT COUNT(*) FROM <name_of_table>