How to Aggregate String Fields

Hi
I have a Query in which i Use Sum to aggregate fields , now i have some new fields on the table which are String, i want to add those to same existing queries where Sum is happening. and i want those string values to get aggregated as well like for rows
where sum is happening for same rows i want a concatenated value for string field
like i have two rows
             Field 1 (int) -- Field 2(string)
Row 1:     1                    'abc'
Row 2:      2                    'xyz'
When I aplly Sum(Field1) it returns 3 and i want to get back 'abc,xyz' for Field 2 is there a function there SQL which i can use ?
or any work around in SQL

Hi,
This concatinates all the rows , i need only those rows concatinated which sumed up toagather basesd upon group by caluse, so if have a group by clause on Field 3 then i would like to see result as Two resultant rows
Row 1: Field1 = 3 and Field2 = 'abc,xyz'
Row 2: Field1 = 7 and Field2 = 'JGG,AA'
is there a way to do this
Field 1 (int) -- Field 2(string)       Field3
Row 1:     1                    'abc'        1
Row 2:      2                    'xyz'        1
Row 3:      3                    'JGG'        2
Row 4:      4                    'AA'        3

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Hi Yichao,
Chk these links
https://help.sap.com/saphelp_nw04/helpdata/en/5a/0c889a4d5911d2a5fb0000e82deaaa/content.htm
http://help.sap.com/saphelp_45b/helpdata/en/cf/21ec5d446011d189700000e8322d00/frameset.htm
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FS

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Write some code in the program to come to 2nd list from 5th list
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Field Symbols
Field symbols are placeholders or symbolic names for other fields. They do not physically reserve space for a field, but point to its contents. A field symbol cam point to any data object. The data object to which a field symbol points is assigned to it after it has been declared in the program.
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check the below links u will get the answers for your questions
http://help.sap.com/saphelp_nw04/helpdata/en/fc/eb3860358411d1829f0000e829fbfe/content.htm
http://www.sts.tu-harburg.de/teaching/sap_r3/ABAP4/field_sy.htm
http://searchsap.techtarget.com/tip/1,289483,sid21_gci920484,00.html
Syntax Diagram
FIELD-SYMBOLS
Basic form
FIELD-SYMBOLS <fs>.
Extras:
1. ... TYPE type
2. ... TYPE REF TO cif
3. ... TYPE REF TO DATA
4. ... TYPE LINE OF type
5. ... LIKE s
6. ... LIKE LINE OF s
7. ... TYPE tabkind
8. ... STRUCTURE s DEFAULT wa
The syntax check performed in an ABAP Objects context is stricter than in other ABAP areas. See Cannot Use Untyped Field Symbols ad Cannot Use Field Symbols as Components of Classes.
Effect
This statement declares a symbolic field called <fs>. At runtime, you can assign a concrete field to the field symbol using ASSIGN. All operations performed with the field symbol then directly affect the field assigned to it.
You can only use one of the additions.
Example
Output aircraft type from the table SFLIGHT using a field symbol:
FIELD-SYMBOLS <PT> TYPE ANY.
DATA SFLIGHT_WA TYPE SFLIGHT.
ASSIGN SFLIGHT_WA-PLANETYPE TO <PT>.
WRITE <PT>.
Addition 1
... TYPE type
Addition 2
... TYPE REF TO cif
Addition 3
... TYPE REF TO DATA
Addition 4
... TYPE LINE OF type
Addition 5
... LIKE s
Addition 6
... LIKE LINE OF s
Addition 7
... TYPE tabkind
Effect
You can define the type of the field symbol using additions 2 to 7 (just as you can for FORM parameters (compare Defining the Type of Subroutine Parameters). When you use the ASSIGN statement, the system carries out the same type checks as for USING parameters of FORMs.
This addition is not allowed in an ABAP Objects context. See Cannot Use Obsolete Casting for FIELD SYMBOLS.
In some cases, the syntax rules that apply to Unicode programs are different than those for non-Unicode programs. See Defining Types Using STRUCTURE.
Effect
Assigns any (internal) field string or structure to the field symbol from the ABAP Dictionary (s). All fields of the structure can be addressed by name: <fs>-fieldname. The structured field symbol points initially to the work area wa specified after DEFAULT.
The work area wa must be at least as long as the structure s. If s contains fields of the type I or F, wa should have the structure s or at least begin in that way, since otherwise alignment problems may occur.
Example
Address components of the flight bookings table SBOOK using a field symbol:
DATA SBOOK_WA LIKE SBOOK.
FIELD-SYMBOLS <SB> STRUCTURE SBOOK
DEFAULT SBOOK_WA.
WRITE: <SB>-BOOKID, <SB>-FLDATE.
Related
ASSIGN, DATA
Additional help
Declaring Field Symbols
Reward points if useful
Regards
Anji

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