ABAP Select data from SAP table MMRP_CIF_ORDER_INPUT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMRP_CIF_ORDER_INPUT
*  INTO TABLE @DATA(IT_MMRP_CIF_ORDER_INPUT2).
*--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_MMRP_CIF_ORDER_INPUT INDEX 1 INTO DATA(WA_MMRP_CIF_ORDER_INPUT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMRP_CIF_ORDER_INPUT>-ORDNR = 1.
<MMRP_CIF_ORDER_INPUT>-RSNUM = 1.
<MMRP_CIF_ORDER_INPUT>-RSPOS = 1.
<MMRP_CIF_ORDER_INPUT>-ORDERGUID = 1.
<MMRP_CIF_ORDER_INPUT>-METHOD = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMRP_CIF_ORDER_INPUT-OPERATION, sy-vline,
  WA_MMRP_CIF_ORDER_INPUT-MATERIAL, sy-vline,
  WA_MMRP_CIF_ORDER_INPUT-PLANT, sy-vline,
  WA_MMRP_CIF_ORDER_INPUT-STORAGELOCATION, sy-vline,
  WA_MMRP_CIF_ORDER_INPUT-REQMT_QUANT, sy-vline,
  WA_MMRP_CIF_ORDER_INPUT-RECEIVED_QUANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMRP_CIF_ORDER_INPUT 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_MMRP_CIF_ORDER_INPUT 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_MMRP_CIF_ORDER_INPUT INTO WA_MMRP_CIF_ORDER_INPUT.


*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 MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MMRP_CIF_ORDER_INPUT-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMRP_CIF_ORDER_INPUT-MATERIAL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit TSTPS, internal->external for field EXPL_DATE
CALL FUNCTION 'CONVERSION_EXIT_TSTPS_OUTPUT'
  EXPORTING
    input =                      WA_MMRP_CIF_ORDER_INPUT-EXPL_DATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MMRP_CIF_ORDER_INPUT-EXPL_DATE.
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_MMRP_CIF_ORDER_INPUT_STR, 
ORDNR TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
ORDERGUID TYPE STRING,
METHOD TYPE STRING,
OPERATION TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
STORAGELOCATION TYPE STRING,
REQMT_QUANT TYPE STRING,
RECEIVED_QUANT TYPE STRING,
CONFIRMED_QUANT TYPE STRING,
UNITOFMEAS TYPE STRING,
UOM_ISO TYPE STRING,
REQMT_DATE TYPE STRING,
BATCH TYPE STRING,
SPEC_STOCK TYPE STRING,
SPEC_STOCK_KEY TYPE STRING,
ATPCAT TYPE STRING,
TRANSPLANT TYPE STRING,
STLTY TYPE STRING,
STLNR TYPE STRING,
STLKN TYPE STRING,
STPOZ TYPE STRING,
STVKN TYPE STRING,
LOGCOMP TYPE STRING,
CUOBJ TYPE STRING,
PARENT_POSNR TYPE STRING,
IGNORE_PEGGING TYPE STRING,
TRANSSLOC TYPE STRING,
LOCID TYPE STRING,
SCHEDID TYPE STRING,
MATID TYPE STRING,
LOCIDSLOC TYPE STRING,
LIFNR TYPE STRING,
CUOBJ_TYPE TYPE STRING,
CUOBJ_ID TYPE STRING,
EXPL_DATE TYPE STRING,
PRVBE TYPE STRING,
IBX_PERSISTID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMRP_CIF_ORDER_INPUT_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_MMRP_CIF_ORDER_INPUT_STR-ORDNR sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-RSNUM sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-RSPOS sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-ORDERGUID sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-METHOD sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-OPERATION sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-MATERIAL sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-PLANT sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-STORAGELOCATION sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-REQMT_QUANT sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-RECEIVED_QUANT sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-CONFIRMED_QUANT sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-UNITOFMEAS sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-UOM_ISO sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-REQMT_DATE sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-BATCH sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-SPEC_STOCK sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-SPEC_STOCK_KEY sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-ATPCAT sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-TRANSPLANT sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-STLTY sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-STLNR sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-STLKN sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-STPOZ sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-STVKN sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-LOGCOMP sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-CUOBJ sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-PARENT_POSNR sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-IGNORE_PEGGING sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-TRANSSLOC sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-LOCID sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-SCHEDID sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-MATID sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-LOCIDSLOC sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-LIFNR sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-CUOBJ_TYPE sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-CUOBJ_ID sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-EXPL_DATE sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-PRVBE sy-vline 
WA_MMRP_CIF_ORDER_INPUT_STR-IBX_PERSISTID sy-vline      INTO ld_text SEPARATED BY SPACE.

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