Improve PostgreSQL performance for unread message fetch method, too.

diff --git a/src/core/SQL/PostgreSQL/20/select_messages.sql b/src/core/SQL/PostgreSQL/20/select_messages.sql
index 5bf6a24..50be2e3 100644 (file)
--- a/src/core/SQL/PostgreSQL/20/select_messages.sql
+++ b/src/core/SQL/PostgreSQL/20/select_messages.sql
@@ -2,6 +2,6 @@ SELECT messageid, time,  type, flags, sender, message
 FROM backlog
 JOIN sender ON backlog.senderid = sender.senderid
 WHERE bufferid = $1
-AND messageid <= (SELECT buffer.lastmsgid FROM buffer WHERE buffer.bufferid = $1)
+AND backlog.messageid <= (SELECT buffer.lastmsgid FROM buffer WHERE buffer.bufferid = $1)
 ORDER BY messageid DESC
 LIMIT $2

diff --git a/src/core/SQL/PostgreSQL/20/select_messagesNewerThan.sql b/src/core/SQL/PostgreSQL/20/select_messagesNewerThan.sql
index 393d3cf..d5c01dc 100644 (file)
--- a/src/core/SQL/PostgreSQL/20/select_messagesNewerThan.sql
+++ b/src/core/SQL/PostgreSQL/20/select_messagesNewerThan.sql
@@ -1,6 +1,8 @@
 SELECT messageid, time,  type, flags, sender, message
 FROM backlog
 LEFT JOIN sender ON backlog.senderid = sender.senderid
-WHERE backlog.messageid >= $1 AND bufferid = $2
+WHERE backlog.messageid >= $1
+AND backlog.messageid <= (SELECT buffer.lastmsgid FROM buffer WHERE buffer.bufferid = $1)
+AND bufferid = $2
 ORDER BY messageid DESC
 LIMIT $3
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