ABAP Select data from SAP table MC44RB1REC into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MC44RB1REC 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 MC44RB1REC. 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 MC44RB1REC 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_MC44RB1REC TYPE STANDARD TABLE OF MC44RB1REC,
      WA_MC44RB1REC TYPE MC44RB1REC,
      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: <MC44RB1REC> TYPE MC44RB1REC.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MC44RB1REC.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MC44RB1REC
  INTO TABLE IT_MC44RB1REC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MC44RB1REC
*  INTO TABLE @DATA(IT_MC44RB1REC2).
*--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_MC44RB1REC INDEX 1 INTO DATA(WA_MC44RB1REC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MC44RB1REC ASSIGNING <MC44RB1REC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MC44RB1REC>-ARTICLE = 1.
<MC44RB1REC>-ARTNO = 1.
<MC44RB1REC>-ASCAR = 1.
<MC44RB1REC>-BANKAN = 1.
<MC44RB1REC>-BANKKEY = 1.

ENDLOOP.

LOOP AT IT_MC44RB1REC INTO WA_MC44RB1REC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MC44RB1REC-BASUNI, sy-vline,
  WA_MC44RB1REC-CARDNO, sy-vline,
  WA_MC44RB1REC-CARDNXT, sy-vline,
  WA_MC44RB1REC-CARDTY, sy-vline,
  WA_MC44RB1REC-COMACC, sy-vline,
  WA_MC44RB1REC-CONDID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MC44RB1REC 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_MC44RB1REC 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_MC44RB1REC INTO WA_MC44RB1REC.


*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 ARTICLE
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MC44RB1REC-ARTICLE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC44RB1REC-ARTICLE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ASCAR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC44RB1REC-ASCAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC44RB1REC-ASCAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BASUNI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MC44RB1REC-BASUNI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC44RB1REC-BASUNI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CUSTOM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC44RB1REC-CUSTOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC44RB1REC-CUSTOM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EAN11, internal->external for field EANUPC
CALL FUNCTION 'CONVERSION_EXIT_EAN11_OUTPUT'
  EXPORTING
    input =                      WA_MC44RB1REC-EANUPC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC44RB1REC-EANUPC.
WRITE:/ 'New Value:', ld_input.

*Conversion exit EXCRT, internal->external for field EXCHANG
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_MC44RB1REC-EXCHANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC44RB1REC-EXCHANG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PROMNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MC44RB1REC-PROMNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC44RB1REC-PROMNO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SALUNI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MC44RB1REC-SALUNI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MC44RB1REC-SALUNI.
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_MC44RB1REC_STR, 
ARTICLE TYPE STRING,
ARTNO TYPE STRING,
ASCAR TYPE STRING,
BANKAN TYPE STRING,
BANKKEY TYPE STRING,
BASUNI TYPE STRING,
CARDNO TYPE STRING,
CARDNXT TYPE STRING,
CARDTY TYPE STRING,
COMACC TYPE STRING,
CONDID TYPE STRING,
CONDNO TYPE STRING,
CONDTYI TYPE STRING,
CONDTYS TYPE STRING,
CONTTAX TYPE STRING,
CSHRNM TYPE STRING,
CSHRNO TYPE STRING,
CUSTOM TYPE STRING,
DSCDCL TYPE STRING,
EANUPC TYPE STRING,
EXCHANG TYPE STRING,
LOCCUR TYPE STRING,
MRCHGR TYPE STRING,
NOART TYPE STRING,
NOCON TYPE STRING,
NOMGR TYPE STRING,
NOPAY TYPE STRING,
NOPOS TYPE STRING,
NOREC TYPE STRING,
NOUPC TYPE STRING,
PAYDIR TYPE STRING,
PAYMETH TYPE STRING,
PAYSAL TYPE STRING,
POSCTR TYPE STRING,
POSCUR TYPE STRING,
POSDAT TYPE STRING,
POSNO TYPE STRING,
POSTIM TYPE STRING,
PROMNO TYPE STRING,
PROMOFL TYPE STRING,
RECNO TYPE STRING,
RECSIGN TYPE STRING,
RECVAL TYPE STRING,
SALCPR TYPE STRING,
SALES TYPE STRING,
SALGRP TYPE STRING,
SALNO TYPE STRING,
SALPP TYPE STRING,
SALPRR TYPE STRING,
SALQTY TYPE STRING,
SALQTYB TYPE STRING,
SALTAX TYPE STRING,
SALTYPE TYPE STRING,
SALUNI TYPE STRING,
SCFLAG TYPE STRING,
SERNO TYPE STRING,
STORE TYPE STRING,
TATYPE TYPE STRING,
VALWOC TYPE STRING,
WEEKDAY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MC44RB1REC_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_MC44RB1REC_STR-ARTICLE sy-vline 
WA_MC44RB1REC_STR-ARTNO sy-vline 
WA_MC44RB1REC_STR-ASCAR sy-vline 
WA_MC44RB1REC_STR-BANKAN sy-vline 
WA_MC44RB1REC_STR-BANKKEY sy-vline 
WA_MC44RB1REC_STR-BASUNI sy-vline 
WA_MC44RB1REC_STR-CARDNO sy-vline 
WA_MC44RB1REC_STR-CARDNXT sy-vline 
WA_MC44RB1REC_STR-CARDTY sy-vline 
WA_MC44RB1REC_STR-COMACC sy-vline 
WA_MC44RB1REC_STR-CONDID sy-vline 
WA_MC44RB1REC_STR-CONDNO sy-vline 
WA_MC44RB1REC_STR-CONDTYI sy-vline 
WA_MC44RB1REC_STR-CONDTYS sy-vline 
WA_MC44RB1REC_STR-CONTTAX sy-vline 
WA_MC44RB1REC_STR-CSHRNM sy-vline 
WA_MC44RB1REC_STR-CSHRNO sy-vline 
WA_MC44RB1REC_STR-CUSTOM sy-vline 
WA_MC44RB1REC_STR-DSCDCL sy-vline 
WA_MC44RB1REC_STR-EANUPC sy-vline 
WA_MC44RB1REC_STR-EXCHANG sy-vline 
WA_MC44RB1REC_STR-LOCCUR sy-vline 
WA_MC44RB1REC_STR-MRCHGR sy-vline 
WA_MC44RB1REC_STR-NOART sy-vline 
WA_MC44RB1REC_STR-NOCON sy-vline 
WA_MC44RB1REC_STR-NOMGR sy-vline 
WA_MC44RB1REC_STR-NOPAY sy-vline 
WA_MC44RB1REC_STR-NOPOS sy-vline 
WA_MC44RB1REC_STR-NOREC sy-vline 
WA_MC44RB1REC_STR-NOUPC sy-vline 
WA_MC44RB1REC_STR-PAYDIR sy-vline 
WA_MC44RB1REC_STR-PAYMETH sy-vline 
WA_MC44RB1REC_STR-PAYSAL sy-vline 
WA_MC44RB1REC_STR-POSCTR sy-vline 
WA_MC44RB1REC_STR-POSCUR sy-vline 
WA_MC44RB1REC_STR-POSDAT sy-vline 
WA_MC44RB1REC_STR-POSNO sy-vline 
WA_MC44RB1REC_STR-POSTIM sy-vline 
WA_MC44RB1REC_STR-PROMNO sy-vline 
WA_MC44RB1REC_STR-PROMOFL sy-vline 
WA_MC44RB1REC_STR-RECNO sy-vline 
WA_MC44RB1REC_STR-RECSIGN sy-vline 
WA_MC44RB1REC_STR-RECVAL sy-vline 
WA_MC44RB1REC_STR-SALCPR sy-vline 
WA_MC44RB1REC_STR-SALES sy-vline 
WA_MC44RB1REC_STR-SALGRP sy-vline 
WA_MC44RB1REC_STR-SALNO sy-vline 
WA_MC44RB1REC_STR-SALPP sy-vline 
WA_MC44RB1REC_STR-SALPRR sy-vline 
WA_MC44RB1REC_STR-SALQTY sy-vline 
WA_MC44RB1REC_STR-SALQTYB sy-vline 
WA_MC44RB1REC_STR-SALTAX sy-vline 
WA_MC44RB1REC_STR-SALTYPE sy-vline 
WA_MC44RB1REC_STR-SALUNI sy-vline 
WA_MC44RB1REC_STR-SCFLAG sy-vline 
WA_MC44RB1REC_STR-SERNO sy-vline 
WA_MC44RB1REC_STR-STORE sy-vline 
WA_MC44RB1REC_STR-TATYPE sy-vline 
WA_MC44RB1REC_STR-VALWOC sy-vline 
WA_MC44RB1REC_STR-WEEKDAY sy-vline      INTO ld_text SEPARATED BY SPACE.

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