ABAP Select data from SAP table /SYCLO/MM_T156_STR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SYCLO/MM_T156_STR 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 /SYCLO/MM_T156_STR. 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 /SYCLO/MM_T156_STR 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_/SYCLO/MM_T156_STR TYPE STANDARD TABLE OF /SYCLO/MM_T156_STR,
      WA_/SYCLO/MM_T156_STR TYPE /SYCLO/MM_T156_STR,
      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: </SYCLO/MM_T156_STR> TYPE /SYCLO/MM_T156_STR.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/SYCLO/MM_T156_STR.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SYCLO/MM_T156_STR
  INTO TABLE IT_/SYCLO/MM_T156_STR.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SYCLO/MM_T156_STR
*  INTO TABLE @DATA(IT_/SYCLO/MM_T156_STR2).
*--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_/SYCLO/MM_T156_STR INDEX 1 INTO DATA(WA_/SYCLO/MM_T156_STR2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SYCLO/MM_T156_STR ASSIGNING </SYCLO/MM_T156_STR>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SYCLO/MM_T156_STR>-MANDT = 1.
</SYCLO/MM_T156_STR>-BWART = 1.
</SYCLO/MM_T156_STR>-SPRAS = 1.
</SYCLO/MM_T156_STR>-SOBKZ = 1.
</SYCLO/MM_T156_STR>-KZBEW = 1.

ENDLOOP.

LOOP AT IT_/SYCLO/MM_T156_STR INTO WA_/SYCLO/MM_T156_STR.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SYCLO/MM_T156_STR-KZZUG, sy-vline,
  WA_/SYCLO/MM_T156_STR-KZVBR, sy-vline,
  WA_/SYCLO/MM_T156_STR-SHKZG, sy-vline,
  WA_/SYCLO/MM_T156_STR-KZWES, sy-vline,
  WA_/SYCLO/MM_T156_STR-KZVBU, sy-vline,
  WA_/SYCLO/MM_T156_STR-KZDRU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SYCLO/MM_T156_STR 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_/SYCLO/MM_T156_STR 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_/SYCLO/MM_T156_STR INTO WA_/SYCLO/MM_T156_STR.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/SYCLO/MM_T156_STR-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SYCLO/MM_T156_STR-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field J_1BITMTYP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SYCLO/MM_T156_STR-J_1BITMTYP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SYCLO/MM_T156_STR-J_1BITMTYP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field J_1BSPCSTO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/SYCLO/MM_T156_STR-J_1BSPCSTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SYCLO/MM_T156_STR-J_1BSPCSTO.
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_/SYCLO/MM_T156_STR_STR, 
MANDT TYPE STRING,
BWART TYPE STRING,
SPRAS TYPE STRING,
SOBKZ TYPE STRING,
KZBEW TYPE STRING,
KZZUG TYPE STRING,
KZVBR TYPE STRING,
SHKZG TYPE STRING,
KZWES TYPE STRING,
KZVBU TYPE STRING,
KZDRU TYPE STRING,
KZKON TYPE STRING,
CHNEU TYPE STRING,
KZZDE TYPE STRING,
RSTYP TYPE STRING,
SELPA TYPE STRING,
XLAUT TYPE STRING,
KZSTR TYPE STRING,
KZGRU TYPE STRING,
XINVB TYPE STRING,
QSSBW TYPE STRING,
KZBWA TYPE STRING,
XSTBW TYPE STRING,
XPBED TYPE STRING,
XWSBR TYPE STRING,
KZMHD TYPE STRING,
KZCLA TYPE STRING,
XKOKO TYPE STRING,
XKCFC TYPE STRING,
BTEXT TYPE STRING,
XNEBE TYPE STRING,
J_1BNFREL TYPE STRING,
J_1BNFTYPE TYPE STRING,
J_1BITMTYP TYPE STRING,
J_1BSPCSTO TYPE STRING,
J_1BPARTYP TYPE STRING,
J_1BPARVW TYPE STRING,
RULES TYPE STRING,
J_1AREVIDX TYPE STRING,
J_1ADOCCL TYPE STRING,
J_1AEXPKZ TYPE STRING,
XOARC TYPE STRING,
SYCLO_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SYCLO/MM_T156_STR_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_/SYCLO/MM_T156_STR_STR-MANDT sy-vline 
WA_/SYCLO/MM_T156_STR_STR-BWART sy-vline 
WA_/SYCLO/MM_T156_STR_STR-SPRAS sy-vline 
WA_/SYCLO/MM_T156_STR_STR-SOBKZ sy-vline 
WA_/SYCLO/MM_T156_STR_STR-KZBEW sy-vline 
WA_/SYCLO/MM_T156_STR_STR-KZZUG sy-vline 
WA_/SYCLO/MM_T156_STR_STR-KZVBR sy-vline 
WA_/SYCLO/MM_T156_STR_STR-SHKZG sy-vline 
WA_/SYCLO/MM_T156_STR_STR-KZWES sy-vline 
WA_/SYCLO/MM_T156_STR_STR-KZVBU sy-vline 
WA_/SYCLO/MM_T156_STR_STR-KZDRU sy-vline 
WA_/SYCLO/MM_T156_STR_STR-KZKON sy-vline 
WA_/SYCLO/MM_T156_STR_STR-CHNEU sy-vline 
WA_/SYCLO/MM_T156_STR_STR-KZZDE sy-vline 
WA_/SYCLO/MM_T156_STR_STR-RSTYP sy-vline 
WA_/SYCLO/MM_T156_STR_STR-SELPA sy-vline 
WA_/SYCLO/MM_T156_STR_STR-XLAUT sy-vline 
WA_/SYCLO/MM_T156_STR_STR-KZSTR sy-vline 
WA_/SYCLO/MM_T156_STR_STR-KZGRU sy-vline 
WA_/SYCLO/MM_T156_STR_STR-XINVB sy-vline 
WA_/SYCLO/MM_T156_STR_STR-QSSBW sy-vline 
WA_/SYCLO/MM_T156_STR_STR-KZBWA sy-vline 
WA_/SYCLO/MM_T156_STR_STR-XSTBW sy-vline 
WA_/SYCLO/MM_T156_STR_STR-XPBED sy-vline 
WA_/SYCLO/MM_T156_STR_STR-XWSBR sy-vline 
WA_/SYCLO/MM_T156_STR_STR-KZMHD sy-vline 
WA_/SYCLO/MM_T156_STR_STR-KZCLA sy-vline 
WA_/SYCLO/MM_T156_STR_STR-XKOKO sy-vline 
WA_/SYCLO/MM_T156_STR_STR-XKCFC sy-vline 
WA_/SYCLO/MM_T156_STR_STR-BTEXT sy-vline 
WA_/SYCLO/MM_T156_STR_STR-XNEBE sy-vline 
WA_/SYCLO/MM_T156_STR_STR-J_1BNFREL sy-vline 
WA_/SYCLO/MM_T156_STR_STR-J_1BNFTYPE sy-vline 
WA_/SYCLO/MM_T156_STR_STR-J_1BITMTYP sy-vline 
WA_/SYCLO/MM_T156_STR_STR-J_1BSPCSTO sy-vline 
WA_/SYCLO/MM_T156_STR_STR-J_1BPARTYP sy-vline 
WA_/SYCLO/MM_T156_STR_STR-J_1BPARVW sy-vline 
WA_/SYCLO/MM_T156_STR_STR-RULES sy-vline 
WA_/SYCLO/MM_T156_STR_STR-J_1AREVIDX sy-vline 
WA_/SYCLO/MM_T156_STR_STR-J_1ADOCCL sy-vline 
WA_/SYCLO/MM_T156_STR_STR-J_1AEXPKZ sy-vline 
WA_/SYCLO/MM_T156_STR_STR-XOARC sy-vline 
WA_/SYCLO/MM_T156_STR_STR-SYCLO_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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