mirror of
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Merge pgalbraith@bk-internal.mysql.com:/home/bk/mysql-4.0
into krsna.patg.net:/home/patg/mysql-build/mysql-4.0
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unknown
commit
04bf09424d
3 changed files with 170 additions and 2 deletions
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@ -38,6 +38,123 @@ www. .se
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select substring_index('.tcx.se','.',-2),substring_index('.tcx.se','.tcx',-1);
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substring_index('.tcx.se','.',-2) substring_index('.tcx.se','.tcx',-1)
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tcx.se .se
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select substring_index('aaaaaaaaa1','a',1);
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substring_index('aaaaaaaaa1','a',1)
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select substring_index('aaaaaaaaa1','aa',1);
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substring_index('aaaaaaaaa1','aa',1)
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select substring_index('aaaaaaaaa1','aa',2);
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substring_index('aaaaaaaaa1','aa',2)
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aa
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select substring_index('aaaaaaaaa1','aa',3);
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substring_index('aaaaaaaaa1','aa',3)
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aaaa
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select substring_index('aaaaaaaaa1','aa',4);
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substring_index('aaaaaaaaa1','aa',4)
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aaaaaa
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select substring_index('aaaaaaaaa1','aa',5);
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substring_index('aaaaaaaaa1','aa',5)
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aaaaaaaaa1
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select substring_index('aaaaaaaaa1','aaa',1);
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substring_index('aaaaaaaaa1','aaa',1)
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select substring_index('aaaaaaaaa1','aaa',2);
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substring_index('aaaaaaaaa1','aaa',2)
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aaa
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select substring_index('aaaaaaaaa1','aaa',3);
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substring_index('aaaaaaaaa1','aaa',3)
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aaaaaa
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select substring_index('aaaaaaaaa1','aaa',4);
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substring_index('aaaaaaaaa1','aaa',4)
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aaaaaaaaa1
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select substring_index('aaaaaaaaa1','aaaa',1);
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substring_index('aaaaaaaaa1','aaaa',1)
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select substring_index('aaaaaaaaa1','aaaa',2);
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substring_index('aaaaaaaaa1','aaaa',2)
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aaaa
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select substring_index('aaaaaaaaa1','1',1);
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substring_index('aaaaaaaaa1','1',1)
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aaaaaaaaa
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select substring_index('aaaaaaaaa1','a',-1);
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substring_index('aaaaaaaaa1','a',-1)
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1
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select substring_index('aaaaaaaaa1','aa',-1);
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substring_index('aaaaaaaaa1','aa',-1)
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1
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select substring_index('aaaaaaaaa1','aa',-2);
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substring_index('aaaaaaaaa1','aa',-2)
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aa1
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select substring_index('aaaaaaaaa1','aa',-3);
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substring_index('aaaaaaaaa1','aa',-3)
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aaaa1
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select substring_index('aaaaaaaaa1','aa',-4);
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substring_index('aaaaaaaaa1','aa',-4)
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aaaaaa1
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select substring_index('aaaaaaaaa1','aa',-5);
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substring_index('aaaaaaaaa1','aa',-5)
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aaaaaaaaa1
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select substring_index('aaaaaaaaa1','aaa',-1);
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substring_index('aaaaaaaaa1','aaa',-1)
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1
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select substring_index('aaaaaaaaa1','aaa',-2);
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substring_index('aaaaaaaaa1','aaa',-2)
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aaa1
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select substring_index('aaaaaaaaa1','aaa',-3);
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substring_index('aaaaaaaaa1','aaa',-3)
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aaaaaa1
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select substring_index('aaaaaaaaa1','aaa',-4);
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substring_index('aaaaaaaaa1','aaa',-4)
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select substring_index('the king of thethe hill','the',-2);
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substring_index('the king of thethe hill','the',-2)
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the hill
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select substring_index('the king of the the hill','the',-2);
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substring_index('the king of the the hill','the',-2)
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the hill
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select substring_index('the king of the the hill','the',-2);
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substring_index('the king of the the hill','the',-2)
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the hill
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select substring_index('the king of the the hill',' the ',-1);
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substring_index('the king of the the hill',' the ',-1)
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hill
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select substring_index('the king of the the hill',' the ',-2);
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substring_index('the king of the the hill',' the ',-2)
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the hill
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select substring_index('the king of the the hill',' ',-1);
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substring_index('the king of the the hill',' ',-1)
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hill
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select substring_index('the king of the the hill',' ',-2);
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substring_index('the king of the the hill',' ',-2)
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the hill
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select substring_index('the king of the the hill',' ',-3);
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substring_index('the king of the the hill',' ',-3)
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the hill
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select substring_index('the king of the the hill',' ',-4);
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substring_index('the king of the the hill',' ',-4)
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the the hill
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select substring_index('the king of the the hill',' ',-5);
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substring_index('the king of the the hill',' ',-5)
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of the the hill
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select substring_index('the king of the.the hill','the',-2);
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substring_index('the king of the.the hill','the',-2)
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.the hill
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select substring_index('the king of thethethe.the hill','the',-3);
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substring_index('the king of thethethe.the hill','the',-3)
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the.the hill
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select substring_index('the king of thethethe.the hill','the',-1);
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substring_index('the king of thethethe.the hill','the',-1)
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hill
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select substring_index('the king of the the hill','the',1);
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substring_index('the king of the the hill','the',1)
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select substring_index('the king of the the hill','the',2);
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substring_index('the king of the the hill','the',2)
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the king of
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select substring_index('the king of the the hill','the',3);
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substring_index('the king of the the hill','the',3)
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the king of the
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select concat(':',ltrim(' left '),':',rtrim(' right '),':');
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concat(':',ltrim(' left '),':',rtrim(' right '),':')
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:left : right:
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@ -19,6 +19,45 @@ select concat('',left(right(concat('what ',concat('is ','happening')),9),4),'',s
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select substring_index('www.tcx.se','.',-2),substring_index('www.tcx.se','.',1);
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select substring_index('www.tcx.se','tcx',1),substring_index('www.tcx.se','tcx',-1);
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select substring_index('.tcx.se','.',-2),substring_index('.tcx.se','.tcx',-1);
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select substring_index('aaaaaaaaa1','a',1);
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select substring_index('aaaaaaaaa1','aa',1);
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select substring_index('aaaaaaaaa1','aa',2);
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select substring_index('aaaaaaaaa1','aa',3);
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select substring_index('aaaaaaaaa1','aa',4);
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select substring_index('aaaaaaaaa1','aa',5);
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select substring_index('aaaaaaaaa1','aaa',1);
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select substring_index('aaaaaaaaa1','aaa',2);
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select substring_index('aaaaaaaaa1','aaa',3);
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select substring_index('aaaaaaaaa1','aaa',4);
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select substring_index('aaaaaaaaa1','aaaa',1);
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select substring_index('aaaaaaaaa1','aaaa',2);
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select substring_index('aaaaaaaaa1','1',1);
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select substring_index('aaaaaaaaa1','a',-1);
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select substring_index('aaaaaaaaa1','aa',-1);
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select substring_index('aaaaaaaaa1','aa',-2);
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select substring_index('aaaaaaaaa1','aa',-3);
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select substring_index('aaaaaaaaa1','aa',-4);
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select substring_index('aaaaaaaaa1','aa',-5);
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select substring_index('aaaaaaaaa1','aaa',-1);
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select substring_index('aaaaaaaaa1','aaa',-2);
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select substring_index('aaaaaaaaa1','aaa',-3);
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select substring_index('aaaaaaaaa1','aaa',-4);
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select substring_index('the king of thethe hill','the',-2);
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select substring_index('the king of the the hill','the',-2);
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select substring_index('the king of the the hill','the',-2);
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select substring_index('the king of the the hill',' the ',-1);
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select substring_index('the king of the the hill',' the ',-2);
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select substring_index('the king of the the hill',' ',-1);
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select substring_index('the king of the the hill',' ',-2);
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select substring_index('the king of the the hill',' ',-3);
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select substring_index('the king of the the hill',' ',-4);
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select substring_index('the king of the the hill',' ',-5);
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select substring_index('the king of the.the hill','the',-2);
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select substring_index('the king of thethethe.the hill','the',-3);
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select substring_index('the king of thethethe.the hill','the',-1);
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select substring_index('the king of the the hill','the',1);
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select substring_index('the king of the the hill','the',2);
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select substring_index('the king of the the hill','the',3);
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select concat(':',ltrim(' left '),':',rtrim(' right '),':');
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select concat(':',trim(LEADING FROM ' left'),':',trim(TRAILING FROM ' right '),':');
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@ -1084,11 +1084,23 @@ String *Item_func_substr_index::val_str(String *str)
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}
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}
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else
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{ // Start counting at end
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for (offset=res->length() ; ; offset-=delimeter_length-1)
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{
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/*
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Negative index, start counting at the end
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*/
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for (offset=res->length(); offset ;)
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{
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/*
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this call will result in finding the position pointing to one
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address space less than where the found substring is located
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in res
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*/
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if ((int) (offset=res->strrstr(*delimeter,offset)) < 0)
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return res; // Didn't find, return org string
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/*
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At this point, we've searched for the substring
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the number of times as supplied by the index value
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*/
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if (!++count)
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{
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offset+=delimeter_length;
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