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Add missing unique index 

This index was only getting created on upgraded (from v7, I think)
databases but not new ones.

Also adds a comment about what the "prune" queries actually do (because
the `>=` seems really counterintuitive to me until I figured out that
they are only meant for handling a rollback).
This commit is contained in:
Jason Rhinelander 2021-06-09 13:42:45 -03:00
parent 5de150a475
commit 2aebfc4bce
1 changed files with 3 additions and 1 deletions
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4
src/cryptonote_core/oxen_name_system.cpp
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@ -1584,6 +1584,7 @@ CREATE TABLE IF NOT EXISTS "settings" (
CREATE TABLE IF NOT EXISTS "mappings" ()" + mappings_columns + R"();
CREATE INDEX IF NOT EXISTS "owner_id_index" ON mappings("owner_id");
CREATE INDEX IF NOT EXISTS "backup_owner_id_index" ON mappings("backup_owner_index");
CREATE UNIQUE INDEX IF NOT EXISTS "name_type_update" ON "mappings" ("name_hash", "type", "update_height" DESC);
CREATE INDEX IF NOT EXISTS "mapping_type_name_exp" ON "mappings" ("type", "name_hash", "expiration_height" DESC);
)";
@ -1752,8 +1753,9 @@ WHERE "type" = ? AND "name_hash" = ? AND)" + std::string{EXPIRATION};
constexpr auto GET_SETTINGS_STR = R"(SELECT * FROM "settings" WHERE "id" = 1)"sv;
constexpr auto GET_OWNER_BY_ID_STR = R"(SELECT * FROM "owner" WHERE "id" = ?)"sv;
constexpr auto GET_OWNER_BY_KEY_STR = R"(SELECT * FROM "owner" WHERE "address" = ?)"sv;
constexpr auto PRUNE_MAPPINGS_STR = R"(DELETE FROM "mappings" WHERE "update_height" >= ?)"sv;
// Prune queries used when we need to rollback to remove records added after the detach point:
constexpr auto PRUNE_MAPPINGS_STR = R"(DELETE FROM "mappings" WHERE "update_height" >= ?)"sv;
constexpr auto PRUNE_OWNERS_STR =
R"(DELETE FROM "owner"
WHERE NOT EXISTS (SELECT * FROM "mappings" WHERE "owner"."id" = "mappings"."owner_id")