How To Create SELECT For Rows In Table

I have two db-tables:

"TAB01" with structure:

CREATE TABLE TAB01 (
ID int NOT NULL,
Name varchar(64) DEFAULT NULL,
PRIMARY KEY (ID)
)

It contains only name of some object.And "TAB02" with structure:

CREATE TABLE TAB02 (
ID int NOT NULL,
TAB01_ID int NOT NULL,
PositionA int,
PositionB int,
StringVal varchar(32) DEFAULT NULL,
PRIMARY KEY (ID)
)

which contains following data:

ID|TAB01_ID|PositionA|PositionB|StringVal|
1|1|1|1|A|
2|1|1|2|B|
3|1|1|3|C|

[code].....

and I need to find a sequence of values in column "StringVal", for example: A B.I look for a suitable SELECT, that returns (in this case) following result:

TAB02.ID|TAB01.Name|TAB02.PositionA|TAB02.PositionB|
1|ABC|1|1|
10|DEF|2|3|
25|JKL|4|3|
30|MNO|5|1|
36|MNO|5|7|
41|PQR|6|4|
46|STU|7|2|

Data inserted in "TAB02" represents real-life structure:

ID|Name|P01|P02|P03|...|Pxy|
1|ABC|A|B|C|D|E|A|D|
2|DEF|J|K|A|B|F|F|B|
3|GHI|B|A|C|A|F|G|A|F|
4|JKL|F|E|A|B|B|E|E|
5|MNO|A|B|C|B|A|D|A|B|
6|PQR|D|E|F|A|B|A|F|
7|STU|A|A|B|B|E|B|E|