Article View: borland.public.interbase.sql
Article #408Smart indexes
From: Mikael
Date: Mon, 03 Mar 2008 10:00
Date: Mon, 03 Mar 2008 10:00
57 lines
2887 bytes
2887 bytes
IB 7.5.1
How to make smart indexes for this query?
My problem is that I whant good a index for the join itself and the criteria
at the same time.
Mikael
Select
Pot, Env, SessionID, LogId, SenderN, ReceiverN, Doctype
From
Transferlog o
inner join Documents d on (o.SessionID = d.SessionID and o.Env =
d.Env and o.LogID = d.LogID)
Where
o.Pot between '2008-01-08 09:02:48' and '2008-01-08 10:59:59'
and o.Env = 'xib'
and o.senderpi = 7
and d.Docnr = '7815314'
and d.Area = 'CIRCLE'
order by 1 Descending, 2 Descending, 3 Descending
CREATE TABLE DOCUMENTS (
DOCIDENT INTEGER NOT NULL,
SESSIONID INTEGER NOT NULL,
ENV VARCHAR(12) DEFAULT 'INIT' NOT NULL,
LOGID VARCHAR(20) NOT NULL,
DOCNR VARCHAR(35) NOT NULL,
MSGFUNC VARCHAR(35)
);
ALTER TABLE DOCUMENTS ADD CONSTRAINT PKDOC PRIMARY KEY (DOCIDENT);
CREATE TABLE TRANSFERLOG (
LOGID VARCHAR(20) NOT NULL,
"EVENT" SMALLINT NOT NULL,
STATUS SMALLINT NOT NULL,
RESENT CHAR(1) NOT NULL,
STATUSDESCRIPTION VARCHAR(150) NOT NULL,
POT TIMESTAMP NOT NULL,
SESSIONID INTEGER NOT NULL,
ENV VARCHAR(12) DEFAULT
'INIT' NOT NULL,
SENDERID VARCHAR(35),
SENDERN VARCHAR(73),
SENDERPI INTEGER,
RECEIVERID VARCHAR(35),
RECEIVERN VARCHAR(73),
SENDERPI INTEGER,
ROWID INTEGER NOT NULL
);
ALTER TABLE TRANSFERLOG ADD CONSTRAINT PKTL PRIMARY KEY (ROWID);
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