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wallet: add comment on db noting that ON DELETE CASCADE is never used.

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We actually have an assertion that there are no channels remaining when
we delete peers, so this is confusing!

Actually removing the constraint is db-specific and deeply non-trivial.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2023-03-20 10:44:35 +10:30
parent 7d7b2abd02
commit 98d425f1f4
1 changed files with 2 additions and 0 deletions
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wallet/db.c
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@ -96,6 +96,8 @@ static struct migration dbmigrations[] = {
NULL},
{SQL("CREATE TABLE channels ("
" id BIGSERIAL," /* chan->id */
/* FIXME: We deliberately never delete a peer with channels, so this constraint is
* unnecessary! */
" peer_id BIGINT REFERENCES peers(id) ON DELETE CASCADE,"
" short_channel_id TEXT,"
" channel_config_local BIGINT,"