ABAP Select data from SAP table CMD_PRD_S_MAW1_DATA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CMD_PRD_S_MAW1_DATA 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 CMD_PRD_S_MAW1_DATA. 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 CMD_PRD_S_MAW1_DATA 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_CMD_PRD_S_MAW1_DATA TYPE STANDARD TABLE OF CMD_PRD_S_MAW1_DATA,
      WA_CMD_PRD_S_MAW1_DATA TYPE CMD_PRD_S_MAW1_DATA,
      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: <CMD_PRD_S_MAW1_DATA> TYPE CMD_PRD_S_MAW1_DATA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CMD_PRD_S_MAW1_DATA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CMD_PRD_S_MAW1_DATA
  INTO TABLE IT_CMD_PRD_S_MAW1_DATA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMD_PRD_S_MAW1_DATA
*  INTO TABLE @DATA(IT_CMD_PRD_S_MAW1_DATA2).
*--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_CMD_PRD_S_MAW1_DATA INDEX 1 INTO DATA(WA_CMD_PRD_S_MAW1_DATA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CMD_PRD_S_MAW1_DATA ASSIGNING <CMD_PRD_S_MAW1_DATA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMD_PRD_S_MAW1_DATA>-MANDT = 1.
<CMD_PRD_S_MAW1_DATA>-MATNR = 1.
<CMD_PRD_S_MAW1_DATA>-BBTYP = 1.
<CMD_PRD_S_MAW1_DATA>-SERVV = 1.
<CMD_PRD_S_MAW1_DATA>-WMAAB = 1.

ENDLOOP.

LOOP AT IT_CMD_PRD_S_MAW1_DATA INTO WA_CMD_PRD_S_MAW1_DATA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMD_PRD_S_MAW1_DATA-WEKGR, sy-vline,
  WA_CMD_PRD_S_MAW1_DATA-WVRKM, sy-vline,
  WA_CMD_PRD_S_MAW1_DATA-WAUSM, sy-vline,
  WA_CMD_PRD_S_MAW1_DATA-WHERL, sy-vline,
  WA_CMD_PRD_S_MAW1_DATA-WHERR, sy-vline,
  WA_CMD_PRD_S_MAW1_DATA-WLADG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMD_PRD_S_MAW1_DATA 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_CMD_PRD_S_MAW1_DATA 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_CMD_PRD_S_MAW1_DATA INTO WA_CMD_PRD_S_MAW1_DATA.


*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 MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CMD_PRD_S_MAW1_DATA-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMD_PRD_S_MAW1_DATA-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WVRKM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMD_PRD_S_MAW1_DATA-WVRKM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMD_PRD_S_MAW1_DATA-WVRKM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WAUSM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMD_PRD_S_MAW1_DATA-WAUSM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMD_PRD_S_MAW1_DATA-WAUSM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field WEXPM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CMD_PRD_S_MAW1_DATA-WEXPM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMD_PRD_S_MAW1_DATA-WEXPM.
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_CMD_PRD_S_MAW1_DATA_STR, 
MANDT TYPE STRING,
MATNR TYPE STRING,
BBTYP TYPE STRING,
SERVV TYPE STRING,
WMAAB TYPE STRING,
WEKGR TYPE STRING,
WVRKM TYPE STRING,
WAUSM TYPE STRING,
WHERL TYPE STRING,
WHERR TYPE STRING,
WLADG TYPE STRING,
SSTUF TYPE STRING,
PFLKS TYPE STRING,
LSTFL TYPE STRING,
LSTVZ TYPE STRING,
LSTAK TYPE STRING,
LDVFL TYPE STRING,
LDBFL TYPE STRING,
LDVZL TYPE STRING,
LDBZL TYPE STRING,
VDVFL TYPE STRING,
VDBFL TYPE STRING,
VDVZL TYPE STRING,
VDBZL TYPE STRING,
WBKLA TYPE STRING,
WSTAW TYPE STRING,
WPSTA TYPE STRING,
WBWSP TYPE STRING,
WEXPM TYPE STRING,
KWDHT TYPE STRING,
PRERF TYPE STRING,
RBZUL TYPE STRING,
SCAGR TYPE STRING,
CNPRO TYPE STRING,
DUMMY_PRT_INCL_EEW_PS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMD_PRD_S_MAW1_DATA_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_CMD_PRD_S_MAW1_DATA_STR-MANDT sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-MATNR sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-BBTYP sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-SERVV sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-WMAAB sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-WEKGR sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-WVRKM sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-WAUSM sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-WHERL sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-WHERR sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-WLADG sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-SSTUF sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-PFLKS sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-LSTFL sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-LSTVZ sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-LSTAK sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-LDVFL sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-LDBFL sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-LDVZL sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-LDBZL sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-VDVFL sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-VDBFL sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-VDVZL sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-VDBZL sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-WBKLA sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-WSTAW sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-WPSTA sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-WBWSP sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-WEXPM sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-KWDHT sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-PRERF sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-RBZUL sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-SCAGR sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-CNPRO sy-vline 
WA_CMD_PRD_S_MAW1_DATA_STR-DUMMY_PRT_INCL_EEW_PS sy-vline      INTO ld_text SEPARATED BY SPACE.

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