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use combined index (state, hidden, chat_id) to speed up marknoticed_chat()

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B. Petersen
2020-10-10 00:32:45 +02:00
parent 2fe600f885
commit 4c8e6ef495
2 changed files with 9 additions and 7 deletions
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2
src/sql.rs
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@@ -1360,7 +1360,7 @@ CREATE INDEX devmsglabels_index1 ON devmsglabels (label);
}
if dbversion < 68 {
info!(context, "[migration] v68");
// the index is used to speed up get_fresh_msg_cnt(), see comment there for more details
// the index is used to speed up get_fresh_msg_cnt() (see comment there for more details) and marknoticed_chat()
sql.execute(
"CREATE INDEX IF NOT EXISTS msgs_index7 ON msgs (state, hidden, chat_id);",
paramsv![],