1997-04-27 19:40:13 +02:00
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--
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-- AGGREGATES
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--
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2000-01-05 18:32:29 +01:00
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1997-04-27 19:40:13 +02:00
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SELECT avg(four) AS avg_1 FROM onek;
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1997-04-29 16:29:16 +02:00
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SELECT avg(a) AS avg_32 FROM aggtest WHERE a < 100;
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1997-04-27 19:40:13 +02:00
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2000-07-17 05:05:41 +02:00
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-- In 7.1, avg(float4) is computed using float8 arithmetic.
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-- Round the result to 3 digits to avoid platform-specific results.
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SELECT avg(b)::numeric(10,3) AS avg_107_943 FROM aggtest;
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1997-04-27 19:40:13 +02:00
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2000-06-10 07:19:26 +02:00
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SELECT avg(gpa) AS avg_3_4 FROM ONLY student;
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1997-04-27 19:40:13 +02:00
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SELECT sum(four) AS sum_1500 FROM onek;
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SELECT sum(a) AS sum_198 FROM aggtest;
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SELECT sum(b) AS avg_431_773 FROM aggtest;
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2000-06-10 07:19:26 +02:00
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SELECT sum(gpa) AS avg_6_8 FROM ONLY student;
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1997-04-27 19:40:13 +02:00
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SELECT max(four) AS max_3 FROM onek;
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SELECT max(a) AS max_100 FROM aggtest;
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SELECT max(aggtest.b) AS max_324_78 FROM aggtest;
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SELECT max(student.gpa) AS max_3_7 FROM student;
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SELECT count(four) AS cnt_1000 FROM onek;
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1999-12-13 02:27:21 +01:00
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SELECT count(DISTINCT four) AS cnt_4 FROM onek;
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2002-11-21 01:42:20 +01:00
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select ten, count(*), sum(four) from onek
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group by ten order by ten;
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1999-12-13 02:27:21 +01:00
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2002-11-21 01:42:20 +01:00
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select ten, count(four), sum(DISTINCT four) from onek
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group by ten order by ten;
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1999-12-13 02:27:21 +01:00
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1997-04-27 19:40:13 +02:00
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SELECT newavg(four) AS avg_1 FROM onek;
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SELECT newsum(four) AS sum_1500 FROM onek;
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SELECT newcnt(four) AS cnt_1000 FROM onek;
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2003-06-06 17:04:03 +02:00
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-- test for outer-level aggregates
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-- this should work
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select ten, sum(distinct four) from onek a
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group by ten
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having exists (select 1 from onek b where sum(distinct a.four) = b.four);
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-- this should fail because subquery has an agg of its own in WHERE
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select ten, sum(distinct four) from onek a
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group by ten
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having exists (select 1 from onek b
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where sum(distinct a.four + b.four) = b.four);
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2004-05-26 17:26:28 +02:00
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--
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-- test for bitwise integer aggregates
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--
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CREATE TEMPORARY TABLE bitwise_test(
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i2 INT2,
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i4 INT4,
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i8 INT8,
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i INTEGER,
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x INT2,
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y BIT(4)
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);
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-- empty case
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SELECT
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BIT_AND(i2) AS "?",
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BIT_OR(i4) AS "?"
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FROM bitwise_test;
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COPY bitwise_test FROM STDIN NULL 'null';
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1 1 1 1 1 B0101
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3 3 3 null 2 B0100
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7 7 7 3 4 B1100
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\.
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SELECT
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BIT_AND(i2) AS "1",
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BIT_AND(i4) AS "1",
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BIT_AND(i8) AS "1",
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BIT_AND(i) AS "?",
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BIT_AND(x) AS "0",
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BIT_AND(y) AS "0100",
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BIT_OR(i2) AS "7",
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BIT_OR(i4) AS "7",
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BIT_OR(i8) AS "7",
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BIT_OR(i) AS "?",
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BIT_OR(x) AS "7",
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BIT_OR(y) AS "1101"
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FROM bitwise_test;
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--
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-- test boolean aggregates
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--
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-- first test all possible transition and final states
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SELECT
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-- boolean and transitions
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-- null because strict
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booland_statefunc(NULL, NULL) IS NULL AS "t",
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booland_statefunc(TRUE, NULL) IS NULL AS "t",
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booland_statefunc(FALSE, NULL) IS NULL AS "t",
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booland_statefunc(NULL, TRUE) IS NULL AS "t",
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booland_statefunc(NULL, FALSE) IS NULL AS "t",
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-- and actual computations
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booland_statefunc(TRUE, TRUE) AS "t",
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NOT booland_statefunc(TRUE, FALSE) AS "t",
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NOT booland_statefunc(FALSE, TRUE) AS "t",
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NOT booland_statefunc(FALSE, FALSE) AS "t";
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SELECT
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-- boolean or transitions
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-- null because strict
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boolor_statefunc(NULL, NULL) IS NULL AS "t",
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boolor_statefunc(TRUE, NULL) IS NULL AS "t",
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boolor_statefunc(FALSE, NULL) IS NULL AS "t",
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boolor_statefunc(NULL, TRUE) IS NULL AS "t",
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boolor_statefunc(NULL, FALSE) IS NULL AS "t",
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-- actual computations
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boolor_statefunc(TRUE, TRUE) AS "t",
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boolor_statefunc(TRUE, FALSE) AS "t",
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boolor_statefunc(FALSE, TRUE) AS "t",
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NOT boolor_statefunc(FALSE, FALSE) AS "t";
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CREATE TEMPORARY TABLE bool_test(
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b1 BOOL,
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b2 BOOL,
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b3 BOOL,
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b4 BOOL);
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-- empty case
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SELECT
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BOOL_AND(b1) AS "n",
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BOOL_OR(b3) AS "n"
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FROM bool_test;
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COPY bool_test FROM STDIN NULL 'null';
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TRUE null FALSE null
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FALSE TRUE null null
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null TRUE FALSE null
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\.
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SELECT
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BOOL_AND(b1) AS "f",
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BOOL_AND(b2) AS "t",
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BOOL_AND(b3) AS "f",
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BOOL_AND(b4) AS "n",
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BOOL_AND(NOT b2) AS "f",
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BOOL_AND(NOT b3) AS "t"
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FROM bool_test;
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SELECT
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EVERY(b1) AS "f",
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EVERY(b2) AS "t",
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EVERY(b3) AS "f",
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EVERY(b4) AS "n",
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EVERY(NOT b2) AS "f",
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EVERY(NOT b3) AS "t"
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FROM bool_test;
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SELECT
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BOOL_OR(b1) AS "t",
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BOOL_OR(b2) AS "t",
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BOOL_OR(b3) AS "f",
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BOOL_OR(b4) AS "n",
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BOOL_OR(NOT b2) AS "f",
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BOOL_OR(NOT b3) AS "t"
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FROM bool_test;
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