Convert Python exceptions to appropriate SQLite error codes

[serhiy-storchaka]

BPO	44839
Nosy	@berkerpeksag, @serhiy-storchaka, @erlend-aasland
PRs	bpo-44839: Raise more specific errors in sqlite3 #27613

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2021-08-06.18:29:14.143>
created_at = <Date 2021-08-05.11:54:52.391>
labels = ['extension-modules', 'type-feature', '3.11']
title = 'Convert Python exceptions to appropriate SQLite error codes'
updated_at = <Date 2021-08-06.18:29:14.143>
user = 'https://github.com/serhiy-storchaka'

bugs.python.org fields:

activity = <Date 2021-08-06.18:29:14.143>
actor = 'serhiy.storchaka'
assignee = 'none'
closed = True
closed_date = <Date 2021-08-06.18:29:14.143>
closer = 'serhiy.storchaka'
components = ['Extension Modules']
creation = <Date 2021-08-05.11:54:52.391>
creator = 'serhiy.storchaka'
dependencies = []
files = []
hgrepos = []
issue_num = 44839
keywords = ['patch']
message_count = 3.0
messages = ['398997', '398999', '399121']
nosy_count = 3.0
nosy_names = ['berker.peksag', 'serhiy.storchaka', 'erlendaasland']
pr_nums = ['27613']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue44839'
versions = ['Python 3.11']

[serhiy-storchaka]

Currently, any exception raised in user-defined function set the general SQLITE_ERROR error which then produce sqlite3.OperationalError.

For example, if the user function returns a string or bytes object larger than INT_MAX you get OperationalError, but if it is less than INT_MAX and larger than the SQLite limit (configurable, 1000000000 by default) you get DataError. If a memory error occurred in Python code you get OperationalError, but if it is occurred in the SQLite code you get MemoryError.

The proposed PR sets corresponding SQLite error codes for MemoryError and OverflowError in user-defined functions. They will produce MemoryError and DataError in Python.

[serhiy-storchaka]

It was grown from bigmem tests for bpo-44822.

[serhiy-storchaka]

New changeset 7d747f2 by Serhiy Storchaka in branch 'main':
bpo-44839: Raise more specific errors in sqlite3 (GH-27613)
7d747f2