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22b0ccd65d
None of the arithmetic functions for the the money type handle overflow. This commit introduces several helper functions with overflow checking and makes use of them in the money type's arithmetic functions. Fixes bug #18240. Reported-by: Alexander Lakhin Author: Joseph Koshakow Discussion: https://postgr.es/m/18240-c5da758d7dc1ecf0%40postgresql.org Discussion: https://postgr.es/m/CAAvxfHdBPOyEGS7s%2Bxf4iaW0-cgiq25jpYdWBqQqvLtLe_t6tw%40mail.gmail.com Backpatch-through: 12
148 lines
4.4 KiB
SQL
148 lines
4.4 KiB
SQL
--
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-- MONEY
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--
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-- Note that we assume lc_monetary has been set to C.
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--
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CREATE TABLE money_data (m money);
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INSERT INTO money_data VALUES ('123');
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SELECT * FROM money_data;
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SELECT m + '123' FROM money_data;
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SELECT m + '123.45' FROM money_data;
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SELECT m - '123.45' FROM money_data;
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SELECT m / '2'::money FROM money_data;
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SELECT m * 2 FROM money_data;
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SELECT 2 * m FROM money_data;
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SELECT m / 2 FROM money_data;
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SELECT m * 2::int2 FROM money_data;
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SELECT 2::int2 * m FROM money_data;
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SELECT m / 2::int2 FROM money_data;
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SELECT m * 2::int8 FROM money_data;
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SELECT 2::int8 * m FROM money_data;
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SELECT m / 2::int8 FROM money_data;
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SELECT m * 2::float8 FROM money_data;
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SELECT 2::float8 * m FROM money_data;
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SELECT m / 2::float8 FROM money_data;
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SELECT m * 2::float4 FROM money_data;
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SELECT 2::float4 * m FROM money_data;
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SELECT m / 2::float4 FROM money_data;
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-- All true
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SELECT m = '$123.00' FROM money_data;
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SELECT m != '$124.00' FROM money_data;
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SELECT m <= '$123.00' FROM money_data;
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SELECT m >= '$123.00' FROM money_data;
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SELECT m < '$124.00' FROM money_data;
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SELECT m > '$122.00' FROM money_data;
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-- All false
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SELECT m = '$123.01' FROM money_data;
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SELECT m != '$123.00' FROM money_data;
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SELECT m <= '$122.99' FROM money_data;
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SELECT m >= '$123.01' FROM money_data;
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SELECT m > '$124.00' FROM money_data;
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SELECT m < '$122.00' FROM money_data;
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SELECT cashlarger(m, '$124.00') FROM money_data;
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SELECT cashsmaller(m, '$124.00') FROM money_data;
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SELECT cash_words(m) FROM money_data;
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SELECT cash_words(m + '1.23') FROM money_data;
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DELETE FROM money_data;
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INSERT INTO money_data VALUES ('$123.45');
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SELECT * FROM money_data;
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DELETE FROM money_data;
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INSERT INTO money_data VALUES ('$123.451');
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SELECT * FROM money_data;
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DELETE FROM money_data;
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INSERT INTO money_data VALUES ('$123.454');
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SELECT * FROM money_data;
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DELETE FROM money_data;
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INSERT INTO money_data VALUES ('$123.455');
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SELECT * FROM money_data;
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DELETE FROM money_data;
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INSERT INTO money_data VALUES ('$123.456');
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SELECT * FROM money_data;
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DELETE FROM money_data;
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INSERT INTO money_data VALUES ('$123.459');
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SELECT * FROM money_data;
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-- input checks
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SELECT '1234567890'::money;
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SELECT '12345678901234567'::money;
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SELECT '123456789012345678'::money;
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SELECT '9223372036854775807'::money;
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SELECT '-12345'::money;
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SELECT '-1234567890'::money;
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SELECT '-12345678901234567'::money;
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SELECT '-123456789012345678'::money;
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SELECT '-9223372036854775808'::money;
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-- special characters
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SELECT '(1)'::money;
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SELECT '($123,456.78)'::money;
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-- test non-error-throwing API
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SELECT pg_input_is_valid('\x0001', 'money');
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SELECT * FROM pg_input_error_info('\x0001', 'money');
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SELECT pg_input_is_valid('192233720368547758.07', 'money');
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SELECT * FROM pg_input_error_info('192233720368547758.07', 'money');
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-- documented minimums and maximums
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SELECT '-92233720368547758.08'::money;
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SELECT '92233720368547758.07'::money;
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SELECT '-92233720368547758.09'::money;
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SELECT '92233720368547758.08'::money;
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-- rounding
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SELECT '-92233720368547758.085'::money;
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SELECT '92233720368547758.075'::money;
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-- rounding vs. truncation in division
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SELECT '878.08'::money / 11::float8;
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SELECT '878.08'::money / 11::float4;
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SELECT '878.08'::money / 11::bigint;
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SELECT '878.08'::money / 11::int;
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SELECT '878.08'::money / 11::smallint;
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-- check for precision loss in division
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SELECT '90000000000000099.00'::money / 10::bigint;
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SELECT '90000000000000099.00'::money / 10::int;
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SELECT '90000000000000099.00'::money / 10::smallint;
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-- Cast int4/int8/numeric to money
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SELECT 1234567890::money;
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SELECT 12345678901234567::money;
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SELECT (-12345)::money;
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SELECT (-1234567890)::money;
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SELECT (-12345678901234567)::money;
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SELECT 1234567890::int4::money;
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SELECT 12345678901234567::int8::money;
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SELECT 12345678901234567::numeric::money;
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SELECT (-1234567890)::int4::money;
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SELECT (-12345678901234567)::int8::money;
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SELECT (-12345678901234567)::numeric::money;
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-- Cast from money to numeric
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SELECT '12345678901234567'::money::numeric;
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SELECT '-12345678901234567'::money::numeric;
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SELECT '92233720368547758.07'::money::numeric;
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SELECT '-92233720368547758.08'::money::numeric;
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-- overflow checks
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SELECT '92233720368547758.07'::money + '0.01'::money;
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SELECT '-92233720368547758.08'::money - '0.01'::money;
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SELECT '92233720368547758.07'::money * 2::float8;
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SELECT '-1'::money / 1.175494e-38::float4;
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SELECT '92233720368547758.07'::money * 2::int4;
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SELECT '1'::money / 0::int2;
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SELECT '42'::money * 'inf'::float8;
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SELECT '42'::money * '-inf'::float8;
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SELECT '42'::money * 'nan'::float4;
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