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Ignore whitespace Rev 938 → Rev 939

/sun/TrafficCount/trunk/sql/db-update/update-1_1_0-1_2_0.sql
0,0 → 1,127
--
-- TraficCounter
-- Copyleft: Anatoli Klassen (anatoli@aksoft.net)
--
-- SQL script for PostgeSQL
--
-- Update from 1.1.0 to 1.2.0
--
 
update tversion set major=1, minor=2, build=0;
 
drop function insert_count(varchar(100), numeric(20,0));
drop function insert_count_stage2(
varchar(100), numeric(20,0), numeric(20,0), numeric(20,0));
 
CREATE TABLE tdays (
source varchar(100) not null,
day DATE not null,
beginvalue numeric(20,0) not null,
endvalue numeric(20,0) not null,
stamp timestamp not null,
 
CONSTRAINT cdays_source FOREIGN KEY (source) REFERENCES tsources(name)
);
create index idays_main on tdays using btree (source, day);
create index idays_general on tdays using btree (source);
 
insert into tdays (source, day, beginvalue, endvalue, stamp)
select c.source, c.day,
(select COALESCE(max(c2.value), 0) from tcount c2
where c2.source = c.source and c2.stamp < c.day) as beginvalue,
(select max(c2.value) from tcount c2
where c2.source = c.source and date_trunc('day', c2.stamp) = c.day) as endvalue,
CURRENT_TIMESTAMP
from
(select distinct source, date_trunc('day', stamp) as day from tcount) c
;
 
drop table tcount;
 
--
-- Create a new day counter.
-- Intern use only
--
-- @param 1 source name
-- @param 2 absolute value of the counter
--
CREATE FUNCTION insert_counter_stage4(varchar(100), numeric(20,0))
RETURNS integer AS '
insert into tdays (source, day, beginvalue, endvalue, stamp)
values ($1, CURRENT_DATE,
(select COALESCE(max(endvalue), $2) from tdays
where source = $1 and day = (CURRENT_DATE - interval \'1 day\')),
$2, CURRENT_TIMESTAMP);
 
select 1;
' LANGUAGE SQL;
 
 
--
-- Update day counter.
-- Intern use only
--
-- @param 1 source name
-- @param 2 absolute value of the counter
--
CREATE FUNCTION update_counter_stage4(varchar(100), numeric(20,0))
RETURNS integer AS '
update tdays set endvalue = $2, stamp = CURRENT_TIMESTAMP
where source = $1 and day = CURRENT_DATE;
 
select 1;
' LANGUAGE SQL;
 
--
-- Update internal counters.
-- Intern use only
--
-- @param 1 source name
-- @param 2 value of the counter
-- @param 3 value of recalculated base
--
CREATE FUNCTION update_counter_stage3(
varchar(100), numeric(20,0), numeric(20,0))
RETURNS integer AS '
select (case
when (select count(*) from tdays
where day = CURRENT_DATE and source = $1) = 0
then insert_counter_stage4($1, $2 + $3)
else update_counter_stage4($1, $2 + $3)
end
);
 
update tsources set base = $3, delta = $2, countstamp = CURRENT_TIMESTAMP
where name = $1;
 
select 1;
' LANGUAGE SQL;
 
--
-- Update internal counters, calculate real counter value.
-- Intern use only
--
-- @param 1 source name
-- @param 2 value of the counter
-- @param 3 value of base
-- @param 4 value of delta
--
CREATE FUNCTION update_counter_stage2(
varchar(100), numeric(20,0), numeric(20,0), numeric(20,0))
RETURNS integer AS '
select update_counter_stage3($1, $2,
(select (case when $2 >= $4 then $3 else ($3 + $4) end)));
' LANGUAGE SQL;
 
--
-- Update current day counter for given source. Public
--
-- @param 1 source name
-- @param 2 value of the counter
--
CREATE FUNCTION update_counter(varchar(100), numeric(20,0))
RETURNS integer AS '
select update_counter_stage2($1, $2,
(select base from tsources where name = $1),
(select delta from tsources where name = $1));
' LANGUAGE SQL;