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| author | unknown <venu@myvenu.com> | 2003-07-11 18:56:39 -0700 |
|---|---|---|
| committer | unknown <venu@myvenu.com> | 2003-07-11 18:56:39 -0700 |
| commit | 2bc79e0876d1456471a2c66bf7edc7da546e99cf (patch) | |
| tree | 2b2e1aabf865029fd4926f655bbec5299c6162e0 | |
| parent | d1d636de8fa3438b1bff24a13bd74c6e8ca399f2 (diff) | |
| parent | a5ce6a49dd0dc782e225d24735b1af40ed8e3b18 (diff) | |
| download | mariadb-git-2bc79e0876d1456471a2c66bf7edc7da546e99cf.tar.gz | |
Merge
| -rw-r--r-- | mysql-test/r/func_str.result | 21 | ||||
| -rw-r--r-- | mysql-test/t/func_str.test | 11 | ||||
| -rw-r--r-- | sql/item_strfunc.cc | 3 | ||||
| -rw-r--r-- | sql/lex.h | 1 |
4 files changed, 35 insertions, 1 deletions
diff --git a/mysql-test/r/func_str.result b/mysql-test/r/func_str.result index c2a921e1a54..611660675c8 100644 --- a/mysql-test/r/func_str.result +++ b/mysql-test/r/func_str.result @@ -532,3 +532,24 @@ t1 CREATE TABLE `t1` ( `replace(_latin2'abcd',_latin2'b',_latin2'B')` char(4) character set latin2 NOT NULL default '' ) TYPE=MyISAM CHARSET=latin1 drop table t1; +select SUBSTR('abcdefg',3,2); +SUBSTR('abcdefg',3,2) +cd +select SUBSTRING('abcdefg',3,2); +SUBSTRING('abcdefg',3,2) +cd +select SUBSTR('abcdefg',-3,2) FROM DUAL; +SUBSTR('abcdefg',-3,2) +ef +select SUBSTR('abcdefg',-1,5) FROM DUAL; +SUBSTR('abcdefg',-1,5) +g +select SUBSTR('abcdefg',0,0) FROM DUAL; +SUBSTR('abcdefg',0,0) + +select SUBSTR('abcdefg',-1,-1) FROM DUAL; +SUBSTR('abcdefg',-1,-1) + +select SUBSTR('abcdefg',1,-1) FROM DUAL; +SUBSTR('abcdefg',1,-1) + diff --git a/mysql-test/t/func_str.test b/mysql-test/t/func_str.test index c9e7b1a529d..1fabd997366 100644 --- a/mysql-test/t/func_str.test +++ b/mysql-test/t/func_str.test @@ -294,3 +294,14 @@ select ; show create table t1; drop table t1; + +# +# test for SUBSTR +# +select SUBSTR('abcdefg',3,2); +select SUBSTRING('abcdefg',3,2); +select SUBSTR('abcdefg',-3,2) FROM DUAL; +select SUBSTR('abcdefg',-1,5) FROM DUAL; +select SUBSTR('abcdefg',0,0) FROM DUAL; +select SUBSTR('abcdefg',-1,-1) FROM DUAL; +select SUBSTR('abcdefg',1,-1) FROM DUAL; diff --git a/sql/item_strfunc.cc b/sql/item_strfunc.cc index 2d29f76c2d7..92a68002b9e 100644 --- a/sql/item_strfunc.cc +++ b/sql/item_strfunc.cc @@ -979,13 +979,14 @@ void Item_func_right::fix_length_and_dec() String *Item_func_substr::val_str(String *str) { String *res = args[0]->val_str(str); - int32 start = (int32) args[1]->val_int()-1; + int32 start = (int32) args[1]->val_int(); int32 length = arg_count == 3 ? (int32) args[2]->val_int() : INT_MAX32; int32 tmp_length; if ((null_value=(args[0]->null_value || args[1]->null_value || (arg_count == 3 && args[2]->null_value)))) return 0; /* purecov: inspected */ + start= (int32)((start < 0) ? res->length() + start : start -1); start=res->charpos(start); length=res->charpos(length,start); if (start < 0 || (uint) start+1 > res->length() || length <= 0) diff --git a/sql/lex.h b/sql/lex.h index a148baad07f..c2860f4551a 100644 --- a/sql/lex.h +++ b/sql/lex.h @@ -627,6 +627,7 @@ static SYMBOL sql_functions[] = { { "STD", SYM(STD_SYM),0,0}, { "STDDEV", SYM(STD_SYM),0,0}, { "STRCMP", SYM(FUNC_ARG2),0,CREATE_FUNC(create_func_strcmp)}, + { "SUBSTR", SYM(SUBSTRING),0,0}, { "SUBSTRING", SYM(SUBSTRING),0,0}, { "SUBSTRING_INDEX", SYM(SUBSTRING_INDEX),0,0}, { "SUBTIME", SYM(FUNC_ARG2),0,CREATE_FUNC(create_func_subtime)}, |