ABAP Select data from SAP table IFMFG_GTAS_ALV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP IFMFG_GTAS_ALV table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to IFMFG_GTAS_ALV. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the IFMFG_GTAS_ALV table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_IFMFG_GTAS_ALV TYPE STANDARD TABLE OF IFMFG_GTAS_ALV,
      WA_IFMFG_GTAS_ALV TYPE IFMFG_GTAS_ALV,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <IFMFG_GTAS_ALV> TYPE IFMFG_GTAS_ALV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_IFMFG_GTAS_ALV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM IFMFG_GTAS_ALV
  INTO TABLE IT_IFMFG_GTAS_ALV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM IFMFG_GTAS_ALV
*  INTO TABLE @DATA(IT_IFMFG_GTAS_ALV2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_IFMFG_GTAS_ALV INDEX 1 INTO DATA(WA_IFMFG_GTAS_ALV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_IFMFG_GTAS_ALV ASSIGNING <IFMFG_GTAS_ALV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<IFMFG_GTAS_ALV>-RYEAR = 1.
<IFMFG_GTAS_ALV>-REP_PERIOD = 1.
<IFMFG_GTAS_ALV>-ALTRAID = 1.
<IFMFG_GTAS_ALV>-AGENCID = 1.
<IFMFG_GTAS_ALV>-BEGPER = 1.

ENDLOOP.

LOOP AT IT_IFMFG_GTAS_ALV INTO WA_IFMFG_GTAS_ALV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_IFMFG_GTAS_ALV-ENDPER, sy-vline,
  WA_IFMFG_GTAS_ALV-AVTYPE, sy-vline,
  WA_IFMFG_GTAS_ALV-FUND_ACC_SYMBL, sy-vline,
  WA_IFMFG_GTAS_ALV-SUB_ACCT, sy-vline,
  WA_IFMFG_GTAS_ALV-SGL_ACCOUNT, sy-vline,
  WA_IFMFG_GTAS_ALV-USD_AMOUNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_IFMFG_GTAS_ALV you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_IFMFG_GTAS_ALV TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_IFMFG_GTAS_ALV INTO WA_IFMFG_GTAS_ALV.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_IFMFG_GTAS_ALV-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_IFMFG_GTAS_ALV-RYEAR.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_IFMFG_GTAS_ALV_STR, 
RYEAR TYPE STRING,
REP_PERIOD TYPE STRING,
ALTRAID TYPE STRING,
AGENCID TYPE STRING,
BEGPER TYPE STRING,
ENDPER TYPE STRING,
AVTYPE TYPE STRING,
FUND_ACC_SYMBL TYPE STRING,
SUB_ACCT TYPE STRING,
SGL_ACCOUNT TYPE STRING,
USD_AMOUNT TYPE STRING,
DEBIT_CREDIT TYPE STRING,
BEGIN_END TYPE STRING,
FLG_AUTHOR TYPE STRING,
FLG_REIMBUR TYPE STRING,
FLG_APPORT TYPE STRING,
APPOR_CATB_DTL_9 TYPE STRING,
PROG_REPT_CAT TYPE STRING,
FLG_FEDERAL TYPE STRING,
TP_AGENCID TYPE STRING,
TP_MAIN_ACCT TYPE STRING,
YEAR_BDGT_AUTH_9 TYPE STRING,
FLG_AVAIL TYPE STRING,
FLG_BEA TYPE STRING,
FLG_BORROW TYPE STRING,
FLG_EXCHANGE TYPE STRING,
FLG_CUSTODIAL TYPE STRING,
BDGT_IMPACT TYPE STRING,
FLG_PYA TYPE STRING,
COHORT TYPE STRING,
PROGRAM_IND TYPE STRING,
DEFENSE_INDIC_9 TYPE STRING,
OBJ_CLASS TYPE STRING,
RBUKRS TYPE STRING,
FM_AREA TYPE STRING,
AMOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_IFMFG_GTAS_ALV_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_IFMFG_GTAS_ALV_STR-RYEAR sy-vline 
WA_IFMFG_GTAS_ALV_STR-REP_PERIOD sy-vline 
WA_IFMFG_GTAS_ALV_STR-ALTRAID sy-vline 
WA_IFMFG_GTAS_ALV_STR-AGENCID sy-vline 
WA_IFMFG_GTAS_ALV_STR-BEGPER sy-vline 
WA_IFMFG_GTAS_ALV_STR-ENDPER sy-vline 
WA_IFMFG_GTAS_ALV_STR-AVTYPE sy-vline 
WA_IFMFG_GTAS_ALV_STR-FUND_ACC_SYMBL sy-vline 
WA_IFMFG_GTAS_ALV_STR-SUB_ACCT sy-vline 
WA_IFMFG_GTAS_ALV_STR-SGL_ACCOUNT sy-vline 
WA_IFMFG_GTAS_ALV_STR-USD_AMOUNT sy-vline 
WA_IFMFG_GTAS_ALV_STR-DEBIT_CREDIT sy-vline 
WA_IFMFG_GTAS_ALV_STR-BEGIN_END sy-vline 
WA_IFMFG_GTAS_ALV_STR-FLG_AUTHOR sy-vline 
WA_IFMFG_GTAS_ALV_STR-FLG_REIMBUR sy-vline 
WA_IFMFG_GTAS_ALV_STR-FLG_APPORT sy-vline 
WA_IFMFG_GTAS_ALV_STR-APPOR_CATB_DTL_9 sy-vline 
WA_IFMFG_GTAS_ALV_STR-PROG_REPT_CAT sy-vline 
WA_IFMFG_GTAS_ALV_STR-FLG_FEDERAL sy-vline 
WA_IFMFG_GTAS_ALV_STR-TP_AGENCID sy-vline 
WA_IFMFG_GTAS_ALV_STR-TP_MAIN_ACCT sy-vline 
WA_IFMFG_GTAS_ALV_STR-YEAR_BDGT_AUTH_9 sy-vline 
WA_IFMFG_GTAS_ALV_STR-FLG_AVAIL sy-vline 
WA_IFMFG_GTAS_ALV_STR-FLG_BEA sy-vline 
WA_IFMFG_GTAS_ALV_STR-FLG_BORROW sy-vline 
WA_IFMFG_GTAS_ALV_STR-FLG_EXCHANGE sy-vline 
WA_IFMFG_GTAS_ALV_STR-FLG_CUSTODIAL sy-vline 
WA_IFMFG_GTAS_ALV_STR-BDGT_IMPACT sy-vline 
WA_IFMFG_GTAS_ALV_STR-FLG_PYA sy-vline 
WA_IFMFG_GTAS_ALV_STR-COHORT sy-vline 
WA_IFMFG_GTAS_ALV_STR-PROGRAM_IND sy-vline 
WA_IFMFG_GTAS_ALV_STR-DEFENSE_INDIC_9 sy-vline 
WA_IFMFG_GTAS_ALV_STR-OBJ_CLASS sy-vline 
WA_IFMFG_GTAS_ALV_STR-RBUKRS sy-vline 
WA_IFMFG_GTAS_ALV_STR-FM_AREA sy-vline 
WA_IFMFG_GTAS_ALV_STR-AMOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.