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When doing a text-affinity comparison between two values where one or both

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have both a text and a numeric type, make sure the numeric type does not
confuse the answer.  This is a deeper fix to the problem observed by
[forum:/forumpost/3776b48e71|forum pose 3776b48e71].  The problem bisects
to [25f2246be404f38b] on 2014-08-24, prior to version 3.8.7.

FossilOrigin-Name: 709841f88c77276f09701bf38e25503c64b3a0afbe2fbf878136db12f31cbe21
This commit is contained in:
drh
2024-01-20 15:13:13 +00:00
parent 8dca1905ed
commit 4c43f1881e
6 changed files with 115 additions and 14 deletions
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22
ext/misc/noop.c
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@ -38,6 +38,24 @@ static void noopfunc(
sqlite3_result_value(context, argv[0]);
}
/*
** Implementation of the multitype_text() function.
**
** The function returns its argument. The result will always have a
** TEXT value. But if the original input is numeric, it will also
** have that numeric value.
*/
static void multitypeTextFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
assert( argc==1 );
(void)argc;
(void)sqlite3_value_text(argv[0]);
sqlite3_result_value(context, argv[0]);
}
#ifdef _WIN32
__declspec(dllexport)
#endif
@ -64,5 +82,9 @@ int sqlite3_noop_init(
rc = sqlite3_create_function(db, "noop_nd", 1,
SQLITE_UTF8,
0, noopfunc, 0, 0);
if( rc ) return rc;
rc = sqlite3_create_function(db, "multitype_text", 1,
SQLITE_UTF8,
0, multitypeTextFunc, 0, 0);
return rc;
}