Thread:
HI,What can I do to solve this error;
I have two tables, as below
tabel: works
empnum | pnum | hours
--------+------+-------
E1 | P1 | 40
E1 | P2 | 20
E1 | P3 | 80
E1 | P4 | 20
E1 | P5 | 12
E1 | P6 | 12
E2 | P1 | 40
E2 | P2 | 80
E3 | P2 | 20
E4 | P2 | 20
E4 | P4 | 40
E4 | P5 | 80
(12 rows)
--------+------+-------
E1 | P1 | 40
E1 | P2 | 20
E1 | P3 | 80
E1 | P4 | 20
E1 | P5 | 12
E1 | P6 | 12
E2 | P1 | 40
E2 | P2 | 80
E3 | P2 | 20
E4 | P2 | 20
E4 | P4 | 40
E4 | P5 | 80
(12 rows)
table:proj
pnum | pname | ptype | budget | city
------+----------------------+--------+--------+-----------------
P1 | MXSS | Design | 10000 | Deale
P2 | CALM | Code | 30000 | Vienna
P3 | SDP | Test | 30000 | Tampa
P4 | SDP | Design | 20000 | Deale
P5 | IRM | Test | 10000 | Vienna
P6 | PAYR | Design | 50000 | Deale
(6 rows)
------+----------------------+--------+--------+-----------------
P1 | MXSS | Design | 10000 | Deale
P2 | CALM | Code | 30000 | Vienna
P3 | SDP | Test | 30000 | Tampa
P4 | SDP | Design | 20000 | Deale
P5 | IRM | Test | 10000 | Vienna
P6 | PAYR | Design | 50000 | Deale
(6 rows)
I want to do this query,but system returns "ERROR:Aggregates not allowd in WHERE clause"
please help me,do the query:
SELECT PNUM, SUM(HOURS) FROM WORKS
GROUP BY PNUM
HAVING EXISTS (SELECT PNAME FROM PROJ
WHERE PROJ.PNUM = WORKS.PNUM AND
SUM(WORKS.HOURS) > PROJ.BUDGET / 200);
GROUP BY PNUM
HAVING EXISTS (SELECT PNAME FROM PROJ
WHERE PROJ.PNUM = WORKS.PNUM AND
SUM(WORKS.HOURS) > PROJ.BUDGET / 200);
I think this query should return two tuples:
p1/80
p5/92
☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆孙雨
沈阳东软中间件技术公司 数据管理事业部
E-mail: sun.yu@neusoft.com
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Uz.ytkownik sun yu napisa?: > HI,What can I do to solve this error; > I have two tables, as below > tabel: works > > empnum | pnum | hours > --------+------+------- > E1 | P1 | 40 > E1 | P2 | 20 > E1 | P3 | 80 > E1 | P4 | 20 > E1 | P5 | 12 > E1 | P6 | 12 > E2 | P1 | 40 > E2 | P2 | 80 > E3 | P2 | 20 > E4 | P2 | 20 > E4 | P4 | 40 > E4 | P5 | 80 > (12 rows) > > table:proj > pnum | pname | ptype | budget | city > ------+----------------------+--------+--------+----------------- > P1 | MXSS | Design | 10000 | Deale > P2 | CALM | Code | 30000 | Vienna > P3 | SDP | Test | 30000 | Tampa > P4 | SDP | Design | 20000 | Deale > P5 | IRM | Test | 10000 | Vienna > P6 | PAYR | Design | 50000 | Deale > (6 rows) > > I want to do this query,but system returns "ERROR:Aggregates not > allowd in WHERE clause" > please help me,do the query: > > SELECT PNUM, SUM(HOURS) FROM WORKS > GROUP BY PNUM > HAVING EXISTS (SELECT PNAME FROM PROJ > WHERE PROJ.PNUM = WORKS.PNUM AND > SUM(WORKS.HOURS) > PROJ.BUDGET / 200); > I think this query should return two tuples: > p1/80 > p5/92 Try this: select pnum, sum(hours) fromproj join works using (pnum) group by pnum having sum(hours)>budget/200; Regards, Tomasz Myrta