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[11284] Implement prepared statements for INSERT+DELETE+UPDATE SQL requests. Should improve player save performance + lower MySQL server CPU usage.

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Note: PostgreSQL does not have prepared statements implemented using native APIs.

Huge thanks to Undergarun, kero99 and Vinolentus.

Signed-off-by: Ambal <pogrebniak@gala.net>
This commit is contained in:
Ambal 2011-03-25 21:52:59 +02:00
parent d9374d936f
commit 40ef9cbf2f
24 changed files with 1823 additions and 488 deletions
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10
src/game/ReputationMgr.cpp
View file

@ -503,12 +503,18 @@ void ReputationMgr::LoadFromDB(QueryResult *result)
void ReputationMgr::SaveToDB()
{
static SqlStatementID delRep ;
static SqlStatementID insRep ;
SqlStatement stmtDel = CharacterDatabase.CreateStatement(delRep, "DELETE FROM character_reputation WHERE guid = ? AND faction=?");
SqlStatement stmtIns = CharacterDatabase.CreateStatement(insRep, "INSERT INTO character_reputation (guid,faction,standing,flags) VALUES (?, ?, ?, ?)");
for(FactionStateList::iterator itr = m_factions.begin(); itr != m_factions.end(); ++itr)
{
if (itr->second.needSave)
{
CharacterDatabase.PExecute("DELETE FROM character_reputation WHERE guid = '%u' AND faction='%u'", m_player->GetGUIDLow(), itr->second.ID);
CharacterDatabase.PExecute("INSERT INTO character_reputation (guid,faction,standing,flags) VALUES ('%u', '%u', '%i', '%u')", m_player->GetGUIDLow(), itr->second.ID, itr->second.Standing, itr->second.Flags);
stmtDel.PExecute(m_player->GetGUIDLow(), itr->second.ID);
stmtIns.PExecute(m_player->GetGUIDLow(), itr->second.ID, itr->second.Standing, itr->second.Flags);
itr->second.needSave = false;
}
}