ABAP Select data from SAP table PSIS_GEN_AFFH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PSIS_GEN_AFFH 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 PSIS_GEN_AFFH. 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 PSIS_GEN_AFFH 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_PSIS_GEN_AFFH TYPE STANDARD TABLE OF PSIS_GEN_AFFH,
      WA_PSIS_GEN_AFFH TYPE PSIS_GEN_AFFH,
      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: <PSIS_GEN_AFFH> TYPE PSIS_GEN_AFFH.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSIS_GEN_AFFH
*  INTO TABLE @DATA(IT_PSIS_GEN_AFFH2).
*--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_PSIS_GEN_AFFH INDEX 1 INTO DATA(WA_PSIS_GEN_AFFH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSIS_GEN_AFFH>-AUFPL = 1.
<PSIS_GEN_AFFH>-APLZL = 1.
<PSIS_GEN_AFFH>-OBJNR = 1.
<PSIS_GEN_AFFH>-OBJTY = 1.
<PSIS_GEN_AFFH>-OBJID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSIS_GEN_AFFH-MANDT, sy-vline,
  WA_PSIS_GEN_AFFH-PZLFH, sy-vline,
  WA_PSIS_GEN_AFFH-LOEKZ, sy-vline,
  WA_PSIS_GEN_AFFH-PARKZ, sy-vline,
  WA_PSIS_GEN_AFFH-DATUI, sy-vline,
  WA_PSIS_GEN_AFFH-USERI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSIS_GEN_AFFH 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_PSIS_GEN_AFFH 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_PSIS_GEN_AFFH INTO WA_PSIS_GEN_AFFH.


*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 ALPHA, internal->external for field PLNNR_KEY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-PLNNR_KEY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-PLNNR_KEY.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EHOFFB
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-EHOFFB
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-EHOFFB.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EHOFFE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-EHOFFE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-EHOFFE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field DAUEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-DAUEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-DAUEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MGEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-MGEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-MGEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MGSOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-MGSOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-MGSOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MGISTEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-MGISTEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-MGISTEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MGRSTEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-MGRSTEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-MGRSTEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MGAUSEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-MGAUSEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-MGAUSEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EWEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-EWEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-EWEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EWSOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-EWSOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-EWSOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EWISTEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-EWISTEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-EWISTEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field EWRSTEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-EWRSTEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-EWRSTEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field TXTSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-TXTSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-TXTSP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSIS_GEN_AFFH-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSIS_GEN_AFFH-AENNR.
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_PSIS_GEN_AFFH_STR, 
AUFPL TYPE STRING,
APLZL TYPE STRING,
OBJNR TYPE STRING,
OBJTY TYPE STRING,
OBJID TYPE STRING,
MANDT TYPE STRING,
PZLFH TYPE STRING,
LOEKZ TYPE STRING,
PARKZ TYPE STRING,
DATUI TYPE STRING,
USERI TYPE STRING,
DATUC TYPE STRING,
USERC TYPE STRING,
PLNTY_KEY TYPE STRING,
PLNNR_KEY TYPE STRING,
PZLFH_KEY TYPE STRING,
ZAEHL_KEY TYPE STRING,
OBJCT TYPE STRING,
PSNFH TYPE STRING,
STEUF TYPE STRING,
KZKBL TYPE STRING,
BZOFFB TYPE STRING,
OFFSTB TYPE STRING,
EHOFFB TYPE STRING,
BZOFFE TYPE STRING,
OFFSTE TYPE STRING,
EHOFFE TYPE STRING,
FSFHD TYPE STRING,
FSFHZ TYPE STRING,
FEFHD TYPE STRING,
FEFHZ TYPE STRING,
SSFHD TYPE STRING,
SSFHZ TYPE STRING,
SEFHD TYPE STRING,
SEFHZ TYPE STRING,
ISFHD TYPE STRING,
ISFHZ TYPE STRING,
IEFHD TYPE STRING,
IEFHZ TYPE STRING,
DAUFL TYPE STRING,
DAUEH TYPE STRING,
MGEINH TYPE STRING,
MGVGW TYPE STRING,
MGSOLEH TYPE STRING,
MGSOL TYPE STRING,
MGISTEH TYPE STRING,
MGIST TYPE STRING,
MGRSTEH TYPE STRING,
MGRST TYPE STRING,
MGAUSEH TYPE STRING,
MGAUS TYPE STRING,
MGFORM TYPE STRING,
EWEINH TYPE STRING,
EWVGW TYPE STRING,
EWSOLEH TYPE STRING,
EWSOL TYPE STRING,
EWISTEH TYPE STRING,
EWIST TYPE STRING,
EWRSTEH TYPE STRING,
EWRST TYPE STRING,
EWFORM TYPE STRING,
TXTSP TYPE STRING,
KTSCH TYPE STRING,
TXTZ1 TYPE STRING,
OBJTYPE TYPE STRING,
CH_PROC TYPE STRING,
AENNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSIS_GEN_AFFH_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_PSIS_GEN_AFFH_STR-AUFPL sy-vline 
WA_PSIS_GEN_AFFH_STR-APLZL sy-vline 
WA_PSIS_GEN_AFFH_STR-OBJNR sy-vline 
WA_PSIS_GEN_AFFH_STR-OBJTY sy-vline 
WA_PSIS_GEN_AFFH_STR-OBJID sy-vline 
WA_PSIS_GEN_AFFH_STR-MANDT sy-vline 
WA_PSIS_GEN_AFFH_STR-PZLFH sy-vline 
WA_PSIS_GEN_AFFH_STR-LOEKZ sy-vline 
WA_PSIS_GEN_AFFH_STR-PARKZ sy-vline 
WA_PSIS_GEN_AFFH_STR-DATUI sy-vline 
WA_PSIS_GEN_AFFH_STR-USERI sy-vline 
WA_PSIS_GEN_AFFH_STR-DATUC sy-vline 
WA_PSIS_GEN_AFFH_STR-USERC sy-vline 
WA_PSIS_GEN_AFFH_STR-PLNTY_KEY sy-vline 
WA_PSIS_GEN_AFFH_STR-PLNNR_KEY sy-vline 
WA_PSIS_GEN_AFFH_STR-PZLFH_KEY sy-vline 
WA_PSIS_GEN_AFFH_STR-ZAEHL_KEY sy-vline 
WA_PSIS_GEN_AFFH_STR-OBJCT sy-vline 
WA_PSIS_GEN_AFFH_STR-PSNFH sy-vline 
WA_PSIS_GEN_AFFH_STR-STEUF sy-vline 
WA_PSIS_GEN_AFFH_STR-KZKBL sy-vline 
WA_PSIS_GEN_AFFH_STR-BZOFFB sy-vline 
WA_PSIS_GEN_AFFH_STR-OFFSTB sy-vline 
WA_PSIS_GEN_AFFH_STR-EHOFFB sy-vline 
WA_PSIS_GEN_AFFH_STR-BZOFFE sy-vline 
WA_PSIS_GEN_AFFH_STR-OFFSTE sy-vline 
WA_PSIS_GEN_AFFH_STR-EHOFFE sy-vline 
WA_PSIS_GEN_AFFH_STR-FSFHD sy-vline 
WA_PSIS_GEN_AFFH_STR-FSFHZ sy-vline 
WA_PSIS_GEN_AFFH_STR-FEFHD sy-vline 
WA_PSIS_GEN_AFFH_STR-FEFHZ sy-vline 
WA_PSIS_GEN_AFFH_STR-SSFHD sy-vline 
WA_PSIS_GEN_AFFH_STR-SSFHZ sy-vline 
WA_PSIS_GEN_AFFH_STR-SEFHD sy-vline 
WA_PSIS_GEN_AFFH_STR-SEFHZ sy-vline 
WA_PSIS_GEN_AFFH_STR-ISFHD sy-vline 
WA_PSIS_GEN_AFFH_STR-ISFHZ sy-vline 
WA_PSIS_GEN_AFFH_STR-IEFHD sy-vline 
WA_PSIS_GEN_AFFH_STR-IEFHZ sy-vline 
WA_PSIS_GEN_AFFH_STR-DAUFL sy-vline 
WA_PSIS_GEN_AFFH_STR-DAUEH sy-vline 
WA_PSIS_GEN_AFFH_STR-MGEINH sy-vline 
WA_PSIS_GEN_AFFH_STR-MGVGW sy-vline 
WA_PSIS_GEN_AFFH_STR-MGSOLEH sy-vline 
WA_PSIS_GEN_AFFH_STR-MGSOL sy-vline 
WA_PSIS_GEN_AFFH_STR-MGISTEH sy-vline 
WA_PSIS_GEN_AFFH_STR-MGIST sy-vline 
WA_PSIS_GEN_AFFH_STR-MGRSTEH sy-vline 
WA_PSIS_GEN_AFFH_STR-MGRST sy-vline 
WA_PSIS_GEN_AFFH_STR-MGAUSEH sy-vline 
WA_PSIS_GEN_AFFH_STR-MGAUS sy-vline 
WA_PSIS_GEN_AFFH_STR-MGFORM sy-vline 
WA_PSIS_GEN_AFFH_STR-EWEINH sy-vline 
WA_PSIS_GEN_AFFH_STR-EWVGW sy-vline 
WA_PSIS_GEN_AFFH_STR-EWSOLEH sy-vline 
WA_PSIS_GEN_AFFH_STR-EWSOL sy-vline 
WA_PSIS_GEN_AFFH_STR-EWISTEH sy-vline 
WA_PSIS_GEN_AFFH_STR-EWIST sy-vline 
WA_PSIS_GEN_AFFH_STR-EWRSTEH sy-vline 
WA_PSIS_GEN_AFFH_STR-EWRST sy-vline 
WA_PSIS_GEN_AFFH_STR-EWFORM sy-vline 
WA_PSIS_GEN_AFFH_STR-TXTSP sy-vline 
WA_PSIS_GEN_AFFH_STR-KTSCH sy-vline 
WA_PSIS_GEN_AFFH_STR-TXTZ1 sy-vline 
WA_PSIS_GEN_AFFH_STR-OBJTYPE sy-vline 
WA_PSIS_GEN_AFFH_STR-CH_PROC sy-vline 
WA_PSIS_GEN_AFFH_STR-AENNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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