ABAP Select data from SAP table CMD_BS_MAT_S_MLA_CKMLPR into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CMD_BS_MAT_S_MLA_CKMLPR 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_BS_MAT_S_MLA_CKMLPR. 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_BS_MAT_S_MLA_CKMLPR 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_BS_MAT_S_MLA_CKMLPR TYPE STANDARD TABLE OF CMD_BS_MAT_S_MLA_CKMLPR,
      WA_CMD_BS_MAT_S_MLA_CKMLPR TYPE CMD_BS_MAT_S_MLA_CKMLPR,
      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_BS_MAT_S_MLA_CKMLPR> TYPE CMD_BS_MAT_S_MLA_CKMLPR.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CMD_BS_MAT_S_MLA_CKMLPR
*  INTO TABLE @DATA(IT_CMD_BS_MAT_S_MLA_CKMLPR2).
*--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_BS_MAT_S_MLA_CKMLPR INDEX 1 INTO DATA(WA_CMD_BS_MAT_S_MLA_CKMLPR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CMD_BS_MAT_S_MLA_CKMLPR>-MATNR = 1.
<CMD_BS_MAT_S_MLA_CKMLPR>-BWKEY = 1.
<CMD_BS_MAT_S_MLA_CKMLPR>-BWTAR = 1.
<CMD_BS_MAT_S_MLA_CKMLPR>-MANDT = 1.
<CMD_BS_MAT_S_MLA_CKMLPR>-KALNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CMD_BS_MAT_S_MLA_CKMLPR-CURTP, sy-vline,
  WA_CMD_BS_MAT_S_MLA_CKMLPR-PEINH, sy-vline,
  WA_CMD_BS_MAT_S_MLA_CKMLPR-ZPRSDAT, sy-vline,
  WA_CMD_BS_MAT_S_MLA_CKMLPR-ZKPRS, sy-vline,
  WA_CMD_BS_MAT_S_MLA_CKMLPR-KALKZ, sy-vline,
  WA_CMD_BS_MAT_S_MLA_CKMLPR-PPRDZ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CMD_BS_MAT_S_MLA_CKMLPR 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_BS_MAT_S_MLA_CKMLPR 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_BS_MAT_S_MLA_CKMLPR INTO WA_CMD_BS_MAT_S_MLA_CKMLPR.


*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_BS_MAT_S_MLA_CKMLPR-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMD_BS_MAT_S_MLA_CKMLPR-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field PDATZ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CMD_BS_MAT_S_MLA_CKMLPR-PDATZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMD_BS_MAT_S_MLA_CKMLPR-PDATZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field PDATL
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CMD_BS_MAT_S_MLA_CKMLPR-PDATL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMD_BS_MAT_S_MLA_CKMLPR-PDATL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field PDATV
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CMD_BS_MAT_S_MLA_CKMLPR-PDATV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMD_BS_MAT_S_MLA_CKMLPR-PDATV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field EIBDATJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CMD_BS_MAT_S_MLA_CKMLPR-EIBDATJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMD_BS_MAT_S_MLA_CKMLPR-EIBDATJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RLDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CMD_BS_MAT_S_MLA_CKMLPR-RLDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CMD_BS_MAT_S_MLA_CKMLPR-RLDNR.
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_BS_MAT_S_MLA_CKMLPR_STR, 
MATNR TYPE STRING,
BWKEY TYPE STRING,
BWTAR TYPE STRING,
MANDT TYPE STRING,
KALNR TYPE STRING,
CURTP TYPE STRING,
PEINH TYPE STRING,
ZPRSDAT TYPE STRING,
ZKPRS TYPE STRING,
KALKZ TYPE STRING,
PPRDZ TYPE STRING,
PDATZ TYPE STRING,
BWVA1 TYPE STRING,
VERS1 TYPE STRING,
ZPLPR TYPE STRING,
FPLPX TYPE STRING,
ZBWST TYPE STRING,
KALKL TYPE STRING,
PPRDL TYPE STRING,
PDATL TYPE STRING,
BWVA2 TYPE STRING,
VERS2 TYPE STRING,
LPLPR TYPE STRING,
LPLPX TYPE STRING,
LBWST TYPE STRING,
KALKV TYPE STRING,
PPRDV TYPE STRING,
PDATV TYPE STRING,
BWVA3 TYPE STRING,
VERS3 TYPE STRING,
VPLPR TYPE STRING,
VPLPX TYPE STRING,
CBWST TYPE STRING,
SET_BY_MARKING TYPE STRING,
EIBDATJ TYPE STRING,
EIPOPER TYPE STRING,
EIPRICE TYPE STRING,
SDM_VERSION TYPE STRING,
WAERS TYPE STRING,
RLDNR TYPE STRING,
EXT_CURTYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CMD_BS_MAT_S_MLA_CKMLPR_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_BS_MAT_S_MLA_CKMLPR_STR-MATNR sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-BWKEY sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-BWTAR sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-MANDT sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-KALNR sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-CURTP sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-PEINH sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-ZPRSDAT sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-ZKPRS sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-KALKZ sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-PPRDZ sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-PDATZ sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-BWVA1 sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-VERS1 sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-ZPLPR sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-FPLPX sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-ZBWST sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-KALKL sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-PPRDL sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-PDATL sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-BWVA2 sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-VERS2 sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-LPLPR sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-LPLPX sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-LBWST sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-KALKV sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-PPRDV sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-PDATV sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-BWVA3 sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-VERS3 sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-VPLPR sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-VPLPX sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-CBWST sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-SET_BY_MARKING sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-EIBDATJ sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-EIPOPER sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-EIPRICE sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-SDM_VERSION sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-WAERS sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-RLDNR sy-vline 
WA_CMD_BS_MAT_S_MLA_CKMLPR_STR-EXT_CURTYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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