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Overview
| Comment: | Add tointeger() and toreal() SQL functions. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | toTypeFuncs |
| Files: | files | file ages | folders |
| SHA1: |
af49707211ff7c7c4d30f4f457631ea8 |
| User & Date: | mistachkin 2013-08-19 21:15:34.654 |
Context
|
2013-08-19
| ||
| 22:22 | Additional performance improvements in sqlite3BtreeNext() and sqlite3BtreePrevious(). (check-in: 6f99b54aed user: drh tags: toTypeFuncs) | |
| 21:15 | Add tointeger() and toreal() SQL functions. (check-in: af49707211 user: mistachkin tags: toTypeFuncs) | |
| 20:04 | Performance improvement in sqlite3BtreeNext() and sqlite3BtreePrevious() for the common case of a valid cursor. (check-in: dc65ad8c4c user: drh tags: trunk) | |
|
2013-07-20
| ||
| 00:39 | Merge updates from trunk. (check-in: dd4b77c82a user: mistachkin tags: toTypeFuncs) | |
Changes
Changes to src/func.c.
| ︙ | ︙ | |||
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default: {
assert( sqlite3_value_type(argv[0])==SQLITE_NULL );
sqlite3_result_text(context, "NULL", 4, SQLITE_STATIC);
break;
}
}
}
/*
** The unicode() function. Return the integer unicode code-point value
** for the first character of the input string.
*/
static void unicodeFunc(
sqlite3_context *context,
| > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > | 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 |
default: {
assert( sqlite3_value_type(argv[0])==SQLITE_NULL );
sqlite3_result_text(context, "NULL", 4, SQLITE_STATIC);
break;
}
}
}
/*
** tointeger(X): If X is any value (integer, double, or string) that can
** be losslessly converted into an integer, then make the conversion and
** return the result. Otherwise, return NULL.
*/
static void tointegerFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
assert( argc==1 );
UNUSED_PARAMETER(argc);
switch( sqlite3_value_type(argv[0]) ){
case SQLITE_FLOAT: {
double rVal = sqlite3_value_double(argv[0]);
i64 iVal = (i64)rVal;
if( !sqlite3IsNaN(rVal) && rVal==(double)iVal ){
sqlite3_result_int64(context, iVal);
}
break;
}
case SQLITE_INTEGER: {
sqlite3_result_int64(context, sqlite3_value_int64(argv[0]));
break;
}
case SQLITE_BLOB:
case SQLITE_TEXT: {
const unsigned char *zStr = sqlite3_value_text(argv[0]);
if( zStr ){
int nStr = sqlite3_value_bytes(argv[0]);
if( nStr ){
i64 iVal;
if( !sqlite3Atoi64(zStr, &iVal, nStr, SQLITE_UTF8) ){
sqlite3_result_int64(context, iVal);
}
}
}
break;
}
default: {
assert( sqlite3_value_type(argv[0])==SQLITE_NULL );
break;
}
}
}
/*
** toreal(X): If X can be losslessly converted into a real number, then
** do so and return that real number. Otherwise return NULL.
*/
static void torealFunc(
sqlite3_context *context,
int argc,
sqlite3_value **argv
){
assert( argc==1 );
UNUSED_PARAMETER(argc);
switch( sqlite3_value_type(argv[0]) ){
case SQLITE_FLOAT: {
sqlite3_result_double(context, sqlite3_value_double(argv[0]));
break;
}
case SQLITE_INTEGER: {
i64 iVal = sqlite3_value_int64(argv[0]);
double rVal = (double)iVal;
if( iVal==rVal ){
sqlite3_result_double(context, rVal);
}
break;
}
case SQLITE_BLOB:
case SQLITE_TEXT: {
const unsigned char *zStr = sqlite3_value_text(argv[0]);
if( zStr ){
int nStr = sqlite3_value_bytes(argv[0]);
if( nStr ){
double rVal;
if( sqlite3AtoF(zStr, &rVal, nStr, SQLITE_UTF8) ){
sqlite3_result_double(context, rVal);
return;
}
}
}
break;
}
default: {
assert( sqlite3_value_type(argv[0])==SQLITE_NULL );
break;
}
}
}
/*
** The unicode() function. Return the integer unicode code-point value
** for the first character of the input string.
*/
static void unicodeFunc(
sqlite3_context *context,
|
| ︙ | ︙ | |||
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FUNCTION(sqlite_source_id, 0, 0, 0, sourceidFunc ),
FUNCTION(sqlite_log, 2, 0, 0, errlogFunc ),
#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS
FUNCTION(sqlite_compileoption_used,1, 0, 0, compileoptionusedFunc ),
FUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc ),
#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */
FUNCTION(quote, 1, 0, 0, quoteFunc ),
FUNCTION(last_insert_rowid, 0, 0, 0, last_insert_rowid),
FUNCTION(changes, 0, 0, 0, changes ),
FUNCTION(total_changes, 0, 0, 0, total_changes ),
FUNCTION(replace, 3, 0, 0, replaceFunc ),
FUNCTION(zeroblob, 1, 0, 0, zeroblobFunc ),
#ifdef SQLITE_SOUNDEX
FUNCTION(soundex, 1, 0, 0, soundexFunc ),
| > > | 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 |
FUNCTION(sqlite_source_id, 0, 0, 0, sourceidFunc ),
FUNCTION(sqlite_log, 2, 0, 0, errlogFunc ),
#ifndef SQLITE_OMIT_COMPILEOPTION_DIAGS
FUNCTION(sqlite_compileoption_used,1, 0, 0, compileoptionusedFunc ),
FUNCTION(sqlite_compileoption_get, 1, 0, 0, compileoptiongetFunc ),
#endif /* SQLITE_OMIT_COMPILEOPTION_DIAGS */
FUNCTION(quote, 1, 0, 0, quoteFunc ),
FUNCTION(tointeger, 1, 0, 0, tointegerFunc ),
FUNCTION(toreal, 1, 0, 0, torealFunc ),
FUNCTION(last_insert_rowid, 0, 0, 0, last_insert_rowid),
FUNCTION(changes, 0, 0, 0, changes ),
FUNCTION(total_changes, 0, 0, 0, total_changes ),
FUNCTION(replace, 3, 0, 0, replaceFunc ),
FUNCTION(zeroblob, 1, 0, 0, zeroblobFunc ),
#ifdef SQLITE_SOUNDEX
FUNCTION(soundex, 1, 0, 0, soundexFunc ),
|
| ︙ | ︙ |
Added test/func4.test.
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# 2013 March 10
#
# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
#
# May you do good and not evil.
# May you find forgiveness for yourself and forgive others.
# May you share freely, never taking more than you give.
#
#***********************************************************************
# This file implements regression tests for SQLite library. The
# focus of this file is testing the tointeger() and toreal()
# functions.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
do_execsql_test func4-1.1 {
SELECT tointeger(NULL);
} {{}}
do_execsql_test func4-1.2 {
SELECT tointeger('');
} {{}}
do_execsql_test func4-1.3 {
SELECT tointeger(' ');
} {{}}
do_execsql_test func4-1.4 {
SELECT tointeger('1234');
} {1234}
do_execsql_test func4-1.5 {
SELECT tointeger(' 1234');
} {1234}
do_execsql_test func4-1.6 {
SELECT tointeger('bad');
} {{}}
do_execsql_test func4-1.7 {
SELECT tointeger('0xBAD');
} {{}}
do_execsql_test func4-1.8 {
SELECT tointeger('123BAD');
} {{}}
do_execsql_test func4-1.9 {
SELECT tointeger('0x123BAD');
} {{}}
do_execsql_test func4-1.10 {
SELECT tointeger('123NO');
} {{}}
do_execsql_test func4-1.11 {
SELECT tointeger('0x123NO');
} {{}}
do_execsql_test func4-1.12 {
SELECT tointeger('-0x1');
} {{}}
do_execsql_test func4-1.13 {
SELECT tointeger('-0x0');
} {{}}
do_execsql_test func4-1.14 {
SELECT tointeger('0x0');
} {{}}
do_execsql_test func4-1.15 {
SELECT tointeger('0x1');
} {{}}
do_execsql_test func4-1.16 {
SELECT tointeger(-1);
} {-1}
do_execsql_test func4-1.17 {
SELECT tointeger(-0);
} {0}
do_execsql_test func4-1.18 {
SELECT tointeger(0);
} {0}
do_execsql_test func4-1.19 {
SELECT tointeger(1);
} {1}
do_execsql_test func4-1.20 {
SELECT tointeger(-1.79769313486232e308 - 1);
} {{}}
do_execsql_test func4-1.21 {
SELECT tointeger(-1.79769313486232e308);
} {{}}
do_execsql_test func4-1.22 {
SELECT tointeger(-1.79769313486232e308 + 1);
} {{}}
do_execsql_test func4-1.23 {
SELECT tointeger(-9223372036854775808 - 1);
} {-9223372036854775808}
do_execsql_test func4-1.24 {
SELECT tointeger(-9223372036854775808);
} {-9223372036854775808}
do_execsql_test func4-1.25 {
SELECT tointeger(-9223372036854775808 + 1);
} {-9223372036854775807}
do_execsql_test func4-1.26 {
SELECT tointeger(-2147483648 - 1);
} {-2147483649}
do_execsql_test func4-1.27 {
SELECT tointeger(-2147483648);
} {-2147483648}
do_execsql_test func4-1.28 {
SELECT tointeger(-2147483648 + 1);
} {-2147483647}
do_execsql_test func4-1.29 {
SELECT tointeger(2147483647 - 1);
} {2147483646}
do_execsql_test func4-1.30 {
SELECT tointeger(2147483647);
} {2147483647}
do_execsql_test func4-1.31 {
SELECT tointeger(2147483647 + 1);
} {2147483648}
do_execsql_test func4-1.32 {
SELECT tointeger(9223372036854775807 - 1);
} {9223372036854775806}
do_execsql_test func4-1.33 {
SELECT tointeger(9223372036854775807);
} {9223372036854775807}
do_execsql_test func4-1.34 {
SELECT tointeger(9223372036854775807 + 1);
} {{}}
do_execsql_test func4-1.35 {
SELECT tointeger(1.79769313486232e308 - 1);
} {{}}
do_execsql_test func4-1.36 {
SELECT tointeger(1.79769313486232e308);
} {{}}
do_execsql_test func4-1.37 {
SELECT tointeger(1.79769313486232e308 + 1);
} {{}}
do_execsql_test func4-1.38 {
SELECT tointeger(4503599627370496 - 1);
} {4503599627370495}
do_execsql_test func4-1.39 {
SELECT tointeger(4503599627370496);
} {4503599627370496}
do_execsql_test func4-1.40 {
SELECT tointeger(4503599627370496 + 1);
} {4503599627370497}
do_execsql_test func4-1.41 {
SELECT tointeger(9007199254740992 - 1);
} {9007199254740991}
do_execsql_test func4-1.42 {
SELECT tointeger(9007199254740992);
} {9007199254740992}
do_execsql_test func4-1.43 {
SELECT tointeger(9007199254740992 + 1);
} {9007199254740993}
do_execsql_test func4-1.44 {
SELECT tointeger(9223372036854775808 - 1);
} {{}}
do_execsql_test func4-1.45 {
SELECT tointeger(9223372036854775808);
} {{}}
do_execsql_test func4-1.46 {
SELECT tointeger(9223372036854775808 + 1);
} {{}}
do_execsql_test func4-1.47 {
SELECT tointeger(18446744073709551616 - 1);
} {{}}
do_execsql_test func4-1.48 {
SELECT tointeger(18446744073709551616);
} {{}}
do_execsql_test func4-1.49 {
SELECT tointeger(18446744073709551616 + 1);
} {{}}
ifcapable floatingpoint {
set i 0
do_execsql_test func4-2.1 {
SELECT toreal(NULL);
} {{}}
do_execsql_test func4-2.2 {
SELECT toreal('');
} {{}}
do_execsql_test func4-2.3 {
SELECT toreal(' ');
} {{}}
do_execsql_test func4-2.4 {
SELECT toreal('1234');
} {1234.0}
do_execsql_test func4-2.5 {
SELECT toreal(' 1234');
} {1234.0}
do_execsql_test func4-2.6 {
SELECT toreal('bad');
} {{}}
do_execsql_test func4-2.7 {
SELECT toreal('0xBAD');
} {{}}
do_execsql_test func4-2.8 {
SELECT toreal('123BAD');
} {{}}
do_execsql_test func4-2.9 {
SELECT toreal('0x123BAD');
} {{}}
do_execsql_test func4-2.10 {
SELECT toreal('123NO');
} {{}}
do_execsql_test func4-2.11 {
SELECT toreal('0x123NO');
} {{}}
do_execsql_test func4-2.12 {
SELECT toreal('-0x1');
} {{}}
do_execsql_test func4-2.13 {
SELECT toreal('-0x0');
} {{}}
do_execsql_test func4-2.14 {
SELECT toreal('0x0');
} {{}}
do_execsql_test func4-2.15 {
SELECT toreal('0x1');
} {{}}
do_execsql_test func4-2.16 {
SELECT toreal(-1);
} {-1.0}
do_execsql_test func4-2.17 {
SELECT toreal(-0);
} {0.0}
do_execsql_test func4-2.18 {
SELECT toreal(0);
} {0.0}
do_execsql_test func4-2.19 {
SELECT toreal(1);
} {1.0}
do_execsql_test func4-2.20 {
SELECT toreal(-1.79769313486232e308 - 1);
} {-Inf}
do_execsql_test func4-2.21 {
SELECT toreal(-1.79769313486232e308);
} {-Inf}
do_execsql_test func4-2.22 {
SELECT toreal(-1.79769313486232e308 + 1);
} {-Inf}
do_execsql_test func4-2.23 {
SELECT toreal(-9223372036854775808 - 1);
} {-9.22337203685478e+18}
do_execsql_test func4-2.24 {
SELECT toreal(-9223372036854775808);
} {-9.22337203685478e+18}
do_execsql_test func4-2.25 {
SELECT toreal(-9223372036854775808 + 1);
} {-9.22337203685478e+18}
do_execsql_test func4-2.26 {
SELECT toreal(-2147483648 - 1);
} {-2147483649.0}
do_execsql_test func4-2.27 {
SELECT toreal(-2147483648);
} {-2147483648.0}
do_execsql_test func4-2.28 {
SELECT toreal(-2147483648 + 1);
} {-2147483647.0}
do_execsql_test func4-2.29 {
SELECT toreal(2147483647 - 1);
} {2147483646.0}
do_execsql_test func4-2.30 {
SELECT toreal(2147483647);
} {2147483647.0}
do_execsql_test func4-2.31 {
SELECT toreal(2147483647 + 1);
} {2147483648.0}
do_execsql_test func4-2.32 {
SELECT toreal(9223372036854775807 - 1);
} {9.22337203685478e+18}
do_execsql_test func4-2.33 {
SELECT toreal(9223372036854775807);
} {9.22337203685478e+18}
do_execsql_test func4-2.34 {
SELECT toreal(9223372036854775807 + 1);
} {9.22337203685478e+18}
do_execsql_test func4-2.35 {
SELECT toreal(1.79769313486232e308 - 1);
} {Inf}
do_execsql_test func4-2.36 {
SELECT toreal(1.79769313486232e308);
} {Inf}
do_execsql_test func4-2.37 {
SELECT toreal(1.79769313486232e308 + 1);
} {Inf}
do_execsql_test func4-2.38 {
SELECT toreal(4503599627370496 - 1);
} {4503599627370500.0}
do_execsql_test func4-2.39 {
SELECT toreal(4503599627370496);
} {4503599627370500.0}
do_execsql_test func4-2.40 {
SELECT toreal(4503599627370496 + 1);
} {4503599627370500.0}
do_execsql_test func4-2.41 {
SELECT toreal(9007199254740992 - 1);
} {9007199254740990.0}
do_execsql_test func4-2.42 {
SELECT toreal(9007199254740992);
} {9007199254740990.0}
do_execsql_test func4-2.43 {
SELECT toreal(9007199254740992 + 1);
} {9007199254740990.0}
do_execsql_test func4-2.44 {
SELECT toreal(9223372036854775808 - 1);
} {9.22337203685478e+18}
do_execsql_test func4-2.45 {
SELECT toreal(9223372036854775808);
} {9.22337203685478e+18}
do_execsql_test func4-2.46 {
SELECT toreal(9223372036854775808 + 1);
} {9.22337203685478e+18}
do_execsql_test func4-2.47 {
SELECT toreal(18446744073709551616 - 1);
} {1.84467440737096e+19}
do_execsql_test func4-2.48 {
SELECT toreal(18446744073709551616);
} {1.84467440737096e+19}
do_execsql_test func4-2.49 {
SELECT toreal(18446744073709551616 + 1);
} {1.84467440737096e+19}
}
ifcapable check {
set i 0
do_execsql_test func4-3.1 {
CREATE TABLE t1(
x INTEGER CHECK(tointeger(x) IS NOT NULL AND x = CAST(x AS INTEGER))
);
} {}
do_test func4-3.2 {
catchsql {
INSERT INTO t1 (x) VALUES (NULL);
}
} {1 {constraint failed}}
do_test func4-3.3 {
catchsql {
INSERT INTO t1 (x) VALUES (NULL);
}
} {1 {constraint failed}}
do_test func4-3.4 {
catchsql {
INSERT INTO t1 (x) VALUES ('');
}
} {1 {constraint failed}}
do_test func4-3.5 {
catchsql {
INSERT INTO t1 (x) VALUES ('bad');
}
} {1 {constraint failed}}
do_test func4-3.6 {
catchsql {
INSERT INTO t1 (x) VALUES ('1234bad');
}
} {1 {constraint failed}}
do_test func4-3.7 {
catchsql {
INSERT INTO t1 (x) VALUES ('1234.56bad');
}
} {1 {constraint failed}}
do_test func4-3.8 {
catchsql {
INSERT INTO t1 (x) VALUES (1234);
}
} {0 {}}
do_test func4-3.9 {
catchsql {
INSERT INTO t1 (x) VALUES (1234.56);
}
} {1 {constraint failed}}
do_test func4-3.10 {
catchsql {
INSERT INTO t1 (x) VALUES ('1234');
}
} {0 {}}
do_test func4-3.11 {
catchsql {
INSERT INTO t1 (x) VALUES ('1234.56');
}
} {1 {constraint failed}}
do_test func4-3.12 {
catchsql {
INSERT INTO t1 (x) VALUES (ZEROBLOB(4));
}
} {1 {constraint failed}}
do_test func4-3.13 {
catchsql {
INSERT INTO t1 (x) VALUES (X'');
}
} {1 {constraint failed}}
do_test func4-3.14 {
catchsql {
INSERT INTO t1 (x) VALUES (X'1234');
}
} {1 {constraint failed}}
do_test func4-3.15 {
catchsql {
INSERT INTO t1 (x) VALUES (X'12345678');
}
} {1 {constraint failed}}
do_execsql_test func4-3.16 {
SELECT x FROM t1 ORDER BY x;
} {1234 1234}
ifcapable floatingpoint {
set i 0
do_execsql_test func4-4.1 {
CREATE TABLE t2(
x REAL CHECK(toreal(x) IS NOT NULL)
);
} {}
do_test func4-4.2 {
catchsql {
INSERT INTO t2 (x) VALUES (NULL);
}
} {1 {constraint failed}}
do_test func4-4.3 {
catchsql {
INSERT INTO t2 (x) VALUES (NULL);
}
} {1 {constraint failed}}
do_test func4-4.4 {
catchsql {
INSERT INTO t2 (x) VALUES ('');
}
} {1 {constraint failed}}
do_test func4-4.5 {
catchsql {
INSERT INTO t2 (x) VALUES ('bad');
}
} {1 {constraint failed}}
do_test func4-4.6 {
catchsql {
INSERT INTO t2 (x) VALUES ('1234bad');
}
} {1 {constraint failed}}
do_test func4-4.7 {
catchsql {
INSERT INTO t2 (x) VALUES ('1234.56bad');
}
} {1 {constraint failed}}
do_test func4-4.8 {
catchsql {
INSERT INTO t2 (x) VALUES (1234);
}
} {0 {}}
do_test func4-4.9 {
catchsql {
INSERT INTO t2 (x) VALUES (1234.56);
}
} {0 {}}
do_test func4-4.10 {
catchsql {
INSERT INTO t2 (x) VALUES ('1234');
}
} {0 {}}
do_test func4-4.11 {
catchsql {
INSERT INTO t2 (x) VALUES ('1234.56');
}
} {0 {}}
do_test func4-4.12 {
catchsql {
INSERT INTO t2 (x) VALUES (ZEROBLOB(4));
}
} {1 {constraint failed}}
do_test func4-4.13 {
catchsql {
INSERT INTO t2 (x) VALUES (X'');
}
} {1 {constraint failed}}
do_test func4-4.14 {
catchsql {
INSERT INTO t2 (x) VALUES (X'1234');
}
} {1 {constraint failed}}
do_test func4-4.15 {
catchsql {
INSERT INTO t2 (x) VALUES (X'12345678');
}
} {1 {constraint failed}}
do_execsql_test func4-4.16 {
SELECT x FROM t2 ORDER BY x;
} {1234.0 1234.0 1234.56 1234.56}
}
}
finish_test
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