98 lines
2.2 KiB
SQL
98 lines
2.2 KiB
SQL
--
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-- TINTERVAL
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--
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CREATE TABLE TINTERVAL_TBL (f1 tinterval);
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-- Should accept any abstime,
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-- so do not bother with extensive testing of values
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INSERT INTO TINTERVAL_TBL (f1)
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VALUES ('["-infinity" "infinity"]');
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INSERT INTO TINTERVAL_TBL (f1)
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VALUES ('["May 10, 1947 23:59:12" "Jan 14, 1973 03:14:21"]');
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INSERT INTO TINTERVAL_TBL (f1)
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VALUES ('["Sep 4, 1983 23:59:12" "Oct 4, 1983 23:59:12"]');
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INSERT INTO TINTERVAL_TBL (f1)
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VALUES ('["epoch" "Mon May 1 00:30:30 1995"]');
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INSERT INTO TINTERVAL_TBL (f1)
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VALUES ('["Feb 15 1990 12:15:03" "2001-09-23 11:12:13"]');
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-- badly formatted tintervals
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INSERT INTO TINTERVAL_TBL (f1)
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VALUES ('["bad time specifications" ""]');
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INSERT INTO TINTERVAL_TBL (f1)
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VALUES ('["" "infinity"]');
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-- test tinterval operators
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SELECT '' AS five, * FROM TINTERVAL_TBL;
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-- length ==
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SELECT '' AS one, t.*
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FROM TINTERVAL_TBL t
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WHERE t.f1 #= '@ 1 months';
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-- length <>
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SELECT '' AS three, t.*
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FROM TINTERVAL_TBL t
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WHERE t.f1 #<> '@ 1 months';
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-- length <
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SELECT '' AS zero, t.*
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FROM TINTERVAL_TBL t
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WHERE t.f1 #< '@ 1 month';
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-- length <=
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SELECT '' AS one, t.*
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FROM TINTERVAL_TBL t
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WHERE t.f1 #<= '@ 1 month';
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-- length >
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SELECT '' AS three, t.*
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FROM TINTERVAL_TBL t
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WHERE t.f1 #> '@ 1 year';
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-- length >=
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SELECT '' AS three, t.*
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FROM TINTERVAL_TBL t
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WHERE t.f1 #>= '@ 3 years';
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-- overlaps
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SELECT '' AS three, t1.*
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FROM TINTERVAL_TBL t1
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WHERE t1.f1 &&
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tinterval '["Aug 15 14:23:19 1983" "Sep 16 14:23:19 1983"]';
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SELECT '' AS five, t1.f1, t2.f1
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FROM TINTERVAL_TBL t1, TINTERVAL_TBL t2
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WHERE t1.f1 && t2.f1 and
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t1.f1 = t2.f1
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ORDER BY t1.f1, t2.f1;
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SELECT '' AS fourteen, t1.f1 AS interval1, t2.f1 AS interval2
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FROM TINTERVAL_TBL t1, TINTERVAL_TBL t2
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WHERE t1.f1 && t2.f1 and not t1.f1 = t2.f1
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ORDER BY interval1, interval2;
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-- contains
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SELECT '' AS five, t1.f1
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FROM TINTERVAL_TBL t1
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WHERE not t1.f1 <<
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tinterval '["Aug 15 14:23:19 1980" "Sep 16 14:23:19 1990"]'
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ORDER BY t1.f1;
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-- make time interval
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SELECT '' AS three, t1.f1
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FROM TINTERVAL_TBL t1
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WHERE t1.f1 &&
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(abstime 'Aug 15 14:23:19 1983' <#>
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abstime 'Sep 16 14:23:19 1983')
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ORDER BY t1.f1;
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