From: Mergen Imeev via Tarantool-patches <tarantool-patches@dev.tarantool.org> To: Vladislav Shpilevoy <v.shpilevoy@tarantool.org> Cc: tarantool-patches@dev.tarantool.org Subject: Re: [Tarantool-patches] [PATCH v1 1/1] sql: fix comparison between big DOUBLE and DECIMAL Date: Fri, 27 Aug 2021 10:41:16 +0300 [thread overview] Message-ID: <20210827074116.GA32766@tarantool.org> (raw) In-Reply-To: <003f11f0-5ecc-2e69-dc89-47a34b5f24ac@tarantool.org> Hi! Thank you for the review! I fixed test and made some changes in descriprions. Diff and new patch below. On Thu, Aug 26, 2021 at 10:15:31PM +0200, Vladislav Shpilevoy wrote: > Hi! Thanks for the patch! > > The new test passes even without the changes in mem.c. Diff: diff --git a/changelogs/unreleased/gh-6376-fix-incorrect-dec-inf-cmp.md b/changelogs/unreleased/gh-6376-fix-incorrect-dec-inf-cmp.md index 102b6b9ab..70de655f1 100644 --- a/changelogs/unreleased/gh-6376-fix-incorrect-dec-inf-cmp.md +++ b/changelogs/unreleased/gh-6376-fix-incorrect-dec-inf-cmp.md @@ -1,5 +1,3 @@ ## bugfix/sql -* Fixed wrong comparison between inf and -inf DOUBLE values and DECIMAL - values (gh-6376). - +* Fixed wrong comparison between DECIMAL and large DOUBLE values (gh-6376). diff --git a/test/sql-tap/gh-6376-wrong-double-to-dec-cmp.test.lua b/test/sql-tap/gh-6376-wrong-double-to-dec-cmp.test.lua index 8066e365b..edfc851a2 100755 --- a/test/sql-tap/gh-6376-wrong-double-to-dec-cmp.test.lua +++ b/test/sql-tap/gh-6376-wrong-double-to-dec-cmp.test.lua @@ -2,14 +2,11 @@ local test = require("sqltester") test:plan(4) --- --- Make sure that the comparison between too large or too small DOUBLE and --- DECIMAL is correct. --- +-- Make sure that the comparison between DECIMAL and large DOUBLE is correct. test:do_execsql_test( "gh-6376-1", [[ - SELECT -1e40 > CAST(1 AS DECIMAL); + SELECT CAST(1 AS DECIMAL) < -1e40; ]], { false }) @@ -17,7 +14,7 @@ test:do_execsql_test( test:do_execsql_test( "gh-6376-2", [[ - SELECT -1e400 < CAST(-1 AS DECIMAL); + SELECT CAST(-1 AS DECIMAL) > -1e400; ]], { true }) @@ -25,7 +22,7 @@ test:do_execsql_test( test:do_execsql_test( "gh-6376-3", [[ - SELECT 1e40 >= CAST(1 AS DECIMAL); + SELECT CAST(1 AS DECIMAL) <= 1e40; ]], { true }) @@ -33,7 +30,7 @@ test:do_execsql_test( test:do_execsql_test( "gh-6376-4", [[ - SELECT 1e400 <= CAST(1 AS DECIMAL); + SELECT CAST(1 AS DECIMAL) >= 1e400; ]], { false }) New patch: commit 710054a586ca94cf3a8db67fdfb3530ffdf1153d Author: Mergen Imeev <imeevma@gmail.com> Date: Mon Aug 23 09:34:23 2021 +0300 sql: fix comparison between DECIMAL and big DOUBLE This patch fixes comparison between DECIMAL value and DOUBLE values greater or equal to 1e38 or less or equal to -1e38. Now any DOUBLE value greater or equal to 1e38 is more than any DECIMAL value and DOUBLE value less or equal to -1e38 is less than any DECIMAL value. Closes #6376 diff --git a/changelogs/unreleased/gh-6376-fix-incorrect-dec-inf-cmp.md b/changelogs/unreleased/gh-6376-fix-incorrect-dec-inf-cmp.md new file mode 100644 index 000000000..70de655f1 --- /dev/null +++ b/changelogs/unreleased/gh-6376-fix-incorrect-dec-inf-cmp.md @@ -0,0 +1,3 @@ +## bugfix/sql + +* Fixed wrong comparison between DECIMAL and large DOUBLE values (gh-6376). diff --git a/src/box/sql/mem.c b/src/box/sql/mem.c index 0aca76112..fbfe81038 100644 --- a/src/box/sql/mem.c +++ b/src/box/sql/mem.c @@ -2451,9 +2451,9 @@ mem_cmp_num(const struct Mem *a, const struct Mem *b) } case MEM_TYPE_DOUBLE: { if (b->u.r >= 1e38) - return 1; - if (b->u.r <= -1e38) return -1; + if (b->u.r <= -1e38) + return 1; decimal_t dec; decimal_t *d = decimal_from_double(&dec, b->u.r); assert(d != NULL && d == &dec); diff --git a/test/sql-tap/engine.cfg b/test/sql-tap/engine.cfg index 35754f769..26d85b674 100644 --- a/test/sql-tap/engine.cfg +++ b/test/sql-tap/engine.cfg @@ -35,6 +35,7 @@ "built-in-functions.test.lua": { "memtx": {"engine": "memtx"} }, + "gh-6376-wrong-double-to-dec-cmp.test.lua": {}, "gh-4077-iproto-execute-no-bind.test.lua": {}, "*": { "memtx": {"engine": "memtx"}, diff --git a/test/sql-tap/gh-6376-wrong-double-to-dec-cmp.test.lua b/test/sql-tap/gh-6376-wrong-double-to-dec-cmp.test.lua new file mode 100755 index 000000000..edfc851a2 --- /dev/null +++ b/test/sql-tap/gh-6376-wrong-double-to-dec-cmp.test.lua @@ -0,0 +1,38 @@ +#!/usr/bin/env tarantool +local test = require("sqltester") +test:plan(4) + +-- Make sure that the comparison between DECIMAL and large DOUBLE is correct. +test:do_execsql_test( + "gh-6376-1", + [[ + SELECT CAST(1 AS DECIMAL) < -1e40; + ]], { + false + }) + +test:do_execsql_test( + "gh-6376-2", + [[ + SELECT CAST(-1 AS DECIMAL) > -1e400; + ]], { + true + }) + +test:do_execsql_test( + "gh-6376-3", + [[ + SELECT CAST(1 AS DECIMAL) <= 1e40; + ]], { + true + }) + +test:do_execsql_test( + "gh-6376-4", + [[ + SELECT CAST(1 AS DECIMAL) >= 1e400; + ]], { + false + }) + +test:finish_test()
next prev parent reply other threads:[~2021-08-27 7:41 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-08-26 11:08 Mergen Imeev via Tarantool-patches 2021-08-26 20:15 ` Vladislav Shpilevoy via Tarantool-patches 2021-08-27 7:41 ` Mergen Imeev via Tarantool-patches [this message] 2021-08-27 21:24 ` Vladislav Shpilevoy via Tarantool-patches
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