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d35f1d485c
seg stores the number of significant digits in an input number in a "char" field. If char is signed, and the input is more than 127 digits long, the count can read out as negative causing seg_out() to print garbage (or, if you're really unlucky, even crash). To fix, clamp the digit count to be not more than FLT_DIG. (In theory this loses some information about what the original input was, but it doesn't seem like useful information; it would not survive dump/restore in any case.) Also, in case there are stored values of the seg type containing bad data, add a clamp in seg_out's restore() subroutine. Per bug #17725 from Robins Tharakan. It's been like this forever, so back-patch to all supported branches. Discussion: https://postgr.es/m/17725-0a09313b67fbe86e@postgresql.org
241 lines
7.1 KiB
SQL
241 lines
7.1 KiB
SQL
--
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-- Test seg datatype
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--
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CREATE EXTENSION seg;
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-- Check whether any of our opclasses fail amvalidate
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SELECT amname, opcname
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FROM pg_opclass opc LEFT JOIN pg_am am ON am.oid = opcmethod
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WHERE opc.oid >= 16384 AND NOT amvalidate(opc.oid);
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--
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-- testing the input and output functions
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--
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-- Any number
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SELECT '1'::seg AS seg;
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SELECT '-1'::seg AS seg;
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SELECT '1.0'::seg AS seg;
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SELECT '-1.0'::seg AS seg;
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SELECT '1e7'::seg AS seg;
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SELECT '-1e7'::seg AS seg;
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SELECT '1.0e7'::seg AS seg;
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SELECT '-1.0e7'::seg AS seg;
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SELECT '1e+7'::seg AS seg;
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SELECT '-1e+7'::seg AS seg;
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SELECT '1.0e+7'::seg AS seg;
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SELECT '-1.0e+7'::seg AS seg;
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SELECT '1e-7'::seg AS seg;
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SELECT '-1e-7'::seg AS seg;
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SELECT '1.0e-7'::seg AS seg;
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SELECT '-1.0e-7'::seg AS seg;
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SELECT '2e-6'::seg AS seg;
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SELECT '2e-5'::seg AS seg;
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SELECT '2e-4'::seg AS seg;
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SELECT '2e-3'::seg AS seg;
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SELECT '2e-2'::seg AS seg;
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SELECT '2e-1'::seg AS seg;
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SELECT '2e-0'::seg AS seg;
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SELECT '2e+0'::seg AS seg;
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SELECT '2e+1'::seg AS seg;
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SELECT '2e+2'::seg AS seg;
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SELECT '2e+3'::seg AS seg;
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SELECT '2e+4'::seg AS seg;
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SELECT '2e+5'::seg AS seg;
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SELECT '2e+6'::seg AS seg;
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-- Significant digits preserved
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SELECT '1'::seg AS seg;
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SELECT '1.0'::seg AS seg;
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SELECT '1.00'::seg AS seg;
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SELECT '1.000'::seg AS seg;
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SELECT '1.0000'::seg AS seg;
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SELECT '1.00000'::seg AS seg;
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SELECT '1.000000'::seg AS seg;
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SELECT '0.000000120'::seg AS seg;
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SELECT '3.400e5'::seg AS seg;
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-- Digits truncated
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SELECT '12.34567890123456'::seg AS seg;
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-- Same, with a very long input
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SELECT '12.3456789012345600000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'::seg AS seg;
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-- Numbers with certainty indicators
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SELECT '~6.5'::seg AS seg;
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SELECT '<6.5'::seg AS seg;
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SELECT '>6.5'::seg AS seg;
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SELECT '~ 6.5'::seg AS seg;
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SELECT '< 6.5'::seg AS seg;
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SELECT '> 6.5'::seg AS seg;
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-- Open intervals
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SELECT '0..'::seg AS seg;
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SELECT '0...'::seg AS seg;
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SELECT '0 ..'::seg AS seg;
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SELECT '0 ...'::seg AS seg;
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SELECT '..0'::seg AS seg;
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SELECT '...0'::seg AS seg;
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SELECT '.. 0'::seg AS seg;
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SELECT '... 0'::seg AS seg;
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-- Finite intervals
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SELECT '0 .. 1'::seg AS seg;
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SELECT '-1 .. 0'::seg AS seg;
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SELECT '-1 .. 1'::seg AS seg;
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-- (+/-) intervals
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SELECT '0(+-)1'::seg AS seg;
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SELECT '0(+-)1.0'::seg AS seg;
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SELECT '1.0(+-)0.005'::seg AS seg;
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SELECT '101(+-)1'::seg AS seg;
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-- incorrect number of significant digits in 99.0:
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SELECT '100(+-)1'::seg AS seg;
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-- invalid input
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SELECT ''::seg AS seg;
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SELECT 'ABC'::seg AS seg;
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SELECT '1ABC'::seg AS seg;
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SELECT '1.'::seg AS seg;
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SELECT '1.....'::seg AS seg;
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SELECT '.1'::seg AS seg;
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SELECT '1..2.'::seg AS seg;
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SELECT '1 e7'::seg AS seg;
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SELECT '1e700'::seg AS seg;
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--
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-- testing the operators
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--
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-- equality/inequality:
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--
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SELECT '24 .. 33.20'::seg = '24 .. 33.20'::seg AS bool;
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SELECT '24 .. 33.20'::seg = '24 .. 33.21'::seg AS bool;
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SELECT '24 .. 33.20'::seg != '24 .. 33.20'::seg AS bool;
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SELECT '24 .. 33.20'::seg != '24 .. 33.21'::seg AS bool;
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-- overlap
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--
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SELECT '1'::seg && '1'::seg AS bool;
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SELECT '1'::seg && '2'::seg AS bool;
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SELECT '0 ..'::seg && '0 ..'::seg AS bool;
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SELECT '0 .. 1'::seg && '0 .. 1'::seg AS bool;
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SELECT '..0'::seg && '0..'::seg AS bool;
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SELECT '-1 .. 0.1'::seg && '0 .. 1'::seg AS bool;
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SELECT '-1 .. 0'::seg && '0 .. 1'::seg AS bool;
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SELECT '-1 .. -0.0001'::seg && '0 .. 1'::seg AS bool;
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SELECT '0 ..'::seg && '1'::seg AS bool;
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SELECT '0 .. 1'::seg && '1'::seg AS bool;
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SELECT '0 .. 1'::seg && '2'::seg AS bool;
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SELECT '0 .. 2'::seg && '1'::seg AS bool;
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SELECT '1'::seg && '0 .. 1'::seg AS bool;
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SELECT '2'::seg && '0 .. 1'::seg AS bool;
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SELECT '1'::seg && '0 .. 2'::seg AS bool;
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-- overlap on the left
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--
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SELECT '1'::seg &< '0'::seg AS bool;
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SELECT '1'::seg &< '1'::seg AS bool;
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SELECT '1'::seg &< '2'::seg AS bool;
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SELECT '0 .. 1'::seg &< '0'::seg AS bool;
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SELECT '0 .. 1'::seg &< '1'::seg AS bool;
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SELECT '0 .. 1'::seg &< '2'::seg AS bool;
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SELECT '0 .. 1'::seg &< '0 .. 0.5'::seg AS bool;
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SELECT '0 .. 1'::seg &< '0 .. 1'::seg AS bool;
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SELECT '0 .. 1'::seg &< '0 .. 2'::seg AS bool;
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SELECT '0 .. 1'::seg &< '1 .. 2'::seg AS bool;
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SELECT '0 .. 1'::seg &< '2 .. 3'::seg AS bool;
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-- overlap on the right
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--
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SELECT '0'::seg &> '1'::seg AS bool;
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SELECT '1'::seg &> '1'::seg AS bool;
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SELECT '2'::seg &> '1'::seg AS bool;
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SELECT '0'::seg &> '0 .. 1'::seg AS bool;
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SELECT '1'::seg &> '0 .. 1'::seg AS bool;
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SELECT '2'::seg &> '0 .. 1'::seg AS bool;
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SELECT '0 .. 0.5'::seg &> '0 .. 1'::seg AS bool;
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SELECT '0 .. 1'::seg &> '0 .. 1'::seg AS bool;
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SELECT '0 .. 2'::seg &> '0 .. 2'::seg AS bool;
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SELECT '1 .. 2'::seg &> '0 .. 1'::seg AS bool;
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SELECT '2 .. 3'::seg &> '0 .. 1'::seg AS bool;
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-- left
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--
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SELECT '1'::seg << '0'::seg AS bool;
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SELECT '1'::seg << '1'::seg AS bool;
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SELECT '1'::seg << '2'::seg AS bool;
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SELECT '0 .. 1'::seg << '0'::seg AS bool;
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SELECT '0 .. 1'::seg << '1'::seg AS bool;
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SELECT '0 .. 1'::seg << '2'::seg AS bool;
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SELECT '0 .. 1'::seg << '0 .. 0.5'::seg AS bool;
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SELECT '0 .. 1'::seg << '0 .. 1'::seg AS bool;
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SELECT '0 .. 1'::seg << '0 .. 2'::seg AS bool;
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SELECT '0 .. 1'::seg << '1 .. 2'::seg AS bool;
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SELECT '0 .. 1'::seg << '2 .. 3'::seg AS bool;
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-- right
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--
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SELECT '0'::seg >> '1'::seg AS bool;
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SELECT '1'::seg >> '1'::seg AS bool;
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SELECT '2'::seg >> '1'::seg AS bool;
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SELECT '0'::seg >> '0 .. 1'::seg AS bool;
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SELECT '1'::seg >> '0 .. 1'::seg AS bool;
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SELECT '2'::seg >> '0 .. 1'::seg AS bool;
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SELECT '0 .. 0.5'::seg >> '0 .. 1'::seg AS bool;
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SELECT '0 .. 1'::seg >> '0 .. 1'::seg AS bool;
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SELECT '0 .. 2'::seg >> '0 .. 2'::seg AS bool;
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SELECT '1 .. 2'::seg >> '0 .. 1'::seg AS bool;
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SELECT '2 .. 3'::seg >> '0 .. 1'::seg AS bool;
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-- "contained in" (the left value belongs within the interval specified in the right value):
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--
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SELECT '0'::seg <@ '0'::seg AS bool;
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SELECT '0'::seg <@ '0 ..'::seg AS bool;
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SELECT '0'::seg <@ '.. 0'::seg AS bool;
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SELECT '0'::seg <@ '-1 .. 1'::seg AS bool;
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SELECT '0'::seg <@ '-1 .. 1'::seg AS bool;
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SELECT '-1'::seg <@ '-1 .. 1'::seg AS bool;
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SELECT '1'::seg <@ '-1 .. 1'::seg AS bool;
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SELECT '-1 .. 1'::seg <@ '-1 .. 1'::seg AS bool;
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-- "contains" (the left value contains the interval specified in the right value):
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--
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SELECT '0'::seg @> '0'::seg AS bool;
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SELECT '0 .. '::seg <@ '0'::seg AS bool;
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SELECT '.. 0'::seg <@ '0'::seg AS bool;
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SELECT '-1 .. 1'::seg <@ '0'::seg AS bool;
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SELECT '0'::seg <@ '-1 .. 1'::seg AS bool;
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SELECT '-1'::seg <@ '-1 .. 1'::seg AS bool;
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SELECT '1'::seg <@ '-1 .. 1'::seg AS bool;
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-- Load some example data and build the index
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--
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CREATE TABLE test_seg (s seg);
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\copy test_seg from 'data/test_seg.data'
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CREATE INDEX test_seg_ix ON test_seg USING gist (s);
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SET enable_indexscan = false;
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM test_seg WHERE s @> '11..11.3';
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SELECT count(*) FROM test_seg WHERE s @> '11..11.3';
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RESET enable_indexscan;
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SET enable_bitmapscan = false;
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EXPLAIN (COSTS OFF)
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SELECT count(*) FROM test_seg WHERE s @> '11..11.3';
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SELECT count(*) FROM test_seg WHERE s @> '11..11.3';
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RESET enable_bitmapscan;
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-- Test sorting
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SELECT * FROM test_seg WHERE s @> '11..11.3' GROUP BY s;
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-- Test functions
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SELECT seg_lower(s), seg_center(s), seg_upper(s)
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FROM test_seg WHERE s @> '11.2..11.3' OR s IS NULL ORDER BY s;
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