ABAP Select data from SAP table J_1AINFMEV into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_1AINFMEV 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 J_1AINFMEV. 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 J_1AINFMEV 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_J_1AINFMEV TYPE STANDARD TABLE OF J_1AINFMEV,
      WA_J_1AINFMEV TYPE J_1AINFMEV,
      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: <J_1AINFMEV> TYPE J_1AINFMEV.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_1AINFMEV.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_1AINFMEV
  INTO TABLE IT_J_1AINFMEV.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_1AINFMEV
*  INTO TABLE @DATA(IT_J_1AINFMEV2).
*--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_J_1AINFMEV INDEX 1 INTO DATA(WA_J_1AINFMEV2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_1AINFMEV ASSIGNING <J_1AINFMEV>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_1AINFMEV>-MANDT = 1.
<J_1AINFMEV>-LAND1 = 1.
<J_1AINFMEV>-J_1AINFMET = 1.
<J_1AINFMEV>-KALSM = 1.
<J_1AINFMEV>-INFMETTXT = 1.

ENDLOOP.

LOOP AT IT_J_1AINFMEV INTO WA_J_1AINFMEV.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_1AINFMEV-J_1AFIACT, sy-vline,
  WA_J_1AINFMEV-J_1ATBEAPP, sy-vline,
  WA_J_1AINFMEV-J_1AIPMNG, sy-vline,
  WA_J_1AINFMEV-J_1ANOTRT, sy-vline,
  WA_J_1AINFMEV-J_1AIBLART, sy-vline,
  WA_J_1AINFMEV-J_1AFWBLAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_1AINFMEV 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_J_1AINFMEV 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_J_1AINFMEV INTO WA_J_1AINFMEV.


*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 J_1AINFMET
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_1AINFMEV-J_1AINFMET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_1AINFMEV-J_1AINFMET.
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_J_1AINFMEV_STR, 
MANDT TYPE STRING,
LAND1 TYPE STRING,
J_1AINFMET TYPE STRING,
KALSM TYPE STRING,
INFMETTXT TYPE STRING,
J_1AFIACT TYPE STRING,
J_1ATBEAPP TYPE STRING,
J_1AIPMNG TYPE STRING,
J_1ANOTRT TYPE STRING,
J_1AIBLART TYPE STRING,
J_1AFWBLAT TYPE STRING,
J_1ACBSCHL TYPE STRING,
J_1ADBSCHL TYPE STRING,
J_1AIMWSKZ TYPE STRING,
J_1AOMWSKZ TYPE STRING,
J_1APOSMET TYPE STRING,
J_1AAMACT TYPE STRING,
J_1AAAUCTF TYPE STRING,
J_1AABBWNC TYPE STRING,
J_1AABBWND TYPE STRING,
J_1ATPODEP TYPE STRING,
J_1ARVSTRT TYPE STRING,
J_1AAKBWND TYPE STRING,
J_1AAKBWNC TYPE STRING,
J_1AMMACT TYPE STRING,
J_1APORECO TYPE STRING,
J_1AINDXF TYPE STRING,
J_1ADELCST TYPE STRING,
J_1ADELCTF TYPE STRING,
J_1ATBFISC TYPE STRING,
J_1AMANPR TYPE STRING,
J_1AMMCUTY TYPE STRING,
J_1APOINDX TYPE STRING,
J_1AVLEVEL TYPE STRING,
INDEXM TYPE STRING,
J_1AAXREVD TYPE STRING,
J_1AAOTTYC TYPE STRING,
J_1AAOTTYD TYPE STRING,
J_1AA_RVEND TYPE STRING,
J_1AMMDAC TYPE STRING,
J_1AERTYPE TYPE STRING,
J_1ALEDGER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_1AINFMEV_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_J_1AINFMEV_STR-MANDT sy-vline 
WA_J_1AINFMEV_STR-LAND1 sy-vline 
WA_J_1AINFMEV_STR-J_1AINFMET sy-vline 
WA_J_1AINFMEV_STR-KALSM sy-vline 
WA_J_1AINFMEV_STR-INFMETTXT sy-vline 
WA_J_1AINFMEV_STR-J_1AFIACT sy-vline 
WA_J_1AINFMEV_STR-J_1ATBEAPP sy-vline 
WA_J_1AINFMEV_STR-J_1AIPMNG sy-vline 
WA_J_1AINFMEV_STR-J_1ANOTRT sy-vline 
WA_J_1AINFMEV_STR-J_1AIBLART sy-vline 
WA_J_1AINFMEV_STR-J_1AFWBLAT sy-vline 
WA_J_1AINFMEV_STR-J_1ACBSCHL sy-vline 
WA_J_1AINFMEV_STR-J_1ADBSCHL sy-vline 
WA_J_1AINFMEV_STR-J_1AIMWSKZ sy-vline 
WA_J_1AINFMEV_STR-J_1AOMWSKZ sy-vline 
WA_J_1AINFMEV_STR-J_1APOSMET sy-vline 
WA_J_1AINFMEV_STR-J_1AAMACT sy-vline 
WA_J_1AINFMEV_STR-J_1AAAUCTF sy-vline 
WA_J_1AINFMEV_STR-J_1AABBWNC sy-vline 
WA_J_1AINFMEV_STR-J_1AABBWND sy-vline 
WA_J_1AINFMEV_STR-J_1ATPODEP sy-vline 
WA_J_1AINFMEV_STR-J_1ARVSTRT sy-vline 
WA_J_1AINFMEV_STR-J_1AAKBWND sy-vline 
WA_J_1AINFMEV_STR-J_1AAKBWNC sy-vline 
WA_J_1AINFMEV_STR-J_1AMMACT sy-vline 
WA_J_1AINFMEV_STR-J_1APORECO sy-vline 
WA_J_1AINFMEV_STR-J_1AINDXF sy-vline 
WA_J_1AINFMEV_STR-J_1ADELCST sy-vline 
WA_J_1AINFMEV_STR-J_1ADELCTF sy-vline 
WA_J_1AINFMEV_STR-J_1ATBFISC sy-vline 
WA_J_1AINFMEV_STR-J_1AMANPR sy-vline 
WA_J_1AINFMEV_STR-J_1AMMCUTY sy-vline 
WA_J_1AINFMEV_STR-J_1APOINDX sy-vline 
WA_J_1AINFMEV_STR-J_1AVLEVEL sy-vline 
WA_J_1AINFMEV_STR-INDEXM sy-vline 
WA_J_1AINFMEV_STR-J_1AAXREVD sy-vline 
WA_J_1AINFMEV_STR-J_1AAOTTYC sy-vline 
WA_J_1AINFMEV_STR-J_1AAOTTYD sy-vline 
WA_J_1AINFMEV_STR-J_1AA_RVEND sy-vline 
WA_J_1AINFMEV_STR-J_1AMMDAC sy-vline 
WA_J_1AINFMEV_STR-J_1AERTYPE sy-vline 
WA_J_1AINFMEV_STR-J_1ALEDGER sy-vline      INTO ld_text SEPARATED BY SPACE.

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