ABAP Select data from SAP table CKI_PRS_ML into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CKI_PRS_ML
*  INTO TABLE @DATA(IT_CKI_PRS_ML2).
*--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_CKI_PRS_ML INDEX 1 INTO DATA(WA_CKI_PRS_ML2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CKI_PRS_ML>-MATNR = 1.
<CKI_PRS_ML>-BWKEY = 1.
<CKI_PRS_ML>-BWTAR = 1.
<CKI_PRS_ML>-CURTP = 1.
<CKI_PRS_ML>-VBELN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CKI_PRS_ML-POSNR, sy-vline,
  WA_CKI_PRS_ML-SOBKZ, sy-vline,
  WA_CKI_PRS_ML-PSPNR, sy-vline,
  WA_CKI_PRS_ML-TEXT, sy-vline,
  WA_CKI_PRS_ML-WAERS, sy-vline,
  WA_CKI_PRS_ML-LBKUM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CKI_PRS_ML 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_CKI_PRS_ML 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_CKI_PRS_ML INTO WA_CKI_PRS_ML.


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

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

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CKI_PRS_ML-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKI_PRS_ML-PSPNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CKI_PRS_ML-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CKI_PRS_ML-LIFNR.
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_CKI_PRS_ML_STR, 
MATNR TYPE STRING,
BWKEY TYPE STRING,
BWTAR TYPE STRING,
CURTP TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
SOBKZ TYPE STRING,
PSPNR TYPE STRING,
TEXT TYPE STRING,
WAERS TYPE STRING,
LBKUM TYPE STRING,
SALK3 TYPE STRING,
SALKV TYPE STRING,
VPRSV TYPE STRING,
VERPR TYPE STRING,
STPRS TYPE STRING,
PEINH TYPE STRING,
VMKUM TYPE STRING,
VMSAL TYPE STRING,
VMVPR TYPE STRING,
VMVER TYPE STRING,
VMSTP TYPE STRING,
VMPEI TYPE STRING,
VMSAV TYPE STRING,
VJKUM TYPE STRING,
VJSAL TYPE STRING,
VJVPR TYPE STRING,
VJVER TYPE STRING,
VJSTP TYPE STRING,
VJPEI TYPE STRING,
VJSAV TYPE STRING,
LVPVP TYPE STRING,
VMLPV TYPE STRING,
MLMAA TYPE STRING,
MLAST TYPE STRING,
BWTTY TYPE STRING,
BWSTA TYPE STRING,
VKSAL TYPE STRING,
WERKS TYPE STRING,
LPLPR TYPE STRING,
LPLPX TYPE STRING,
LBWST TYPE STRING,
EXWRT TYPE STRING,
EXWOB TYPE STRING,
EXBUALT TYPE STRING,
EXCLLOCK TYPE STRING,
AUFNR TYPE STRING,
SJAHR TYPE STRING,
SMBLN TYPE STRING,
SMBLP TYPE STRING,
VMVKS TYPE STRING,
VJVKS TYPE STRING,
XOBEW TYPE STRING,
LIFNR TYPE STRING,
ORIGIN_EXTREF_CATEGORY TYPE STRING,
ORIGIN_EXTREF_DATA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CKI_PRS_ML_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_CKI_PRS_ML_STR-MATNR sy-vline 
WA_CKI_PRS_ML_STR-BWKEY sy-vline 
WA_CKI_PRS_ML_STR-BWTAR sy-vline 
WA_CKI_PRS_ML_STR-CURTP sy-vline 
WA_CKI_PRS_ML_STR-VBELN sy-vline 
WA_CKI_PRS_ML_STR-POSNR sy-vline 
WA_CKI_PRS_ML_STR-SOBKZ sy-vline 
WA_CKI_PRS_ML_STR-PSPNR sy-vline 
WA_CKI_PRS_ML_STR-TEXT sy-vline 
WA_CKI_PRS_ML_STR-WAERS sy-vline 
WA_CKI_PRS_ML_STR-LBKUM sy-vline 
WA_CKI_PRS_ML_STR-SALK3 sy-vline 
WA_CKI_PRS_ML_STR-SALKV sy-vline 
WA_CKI_PRS_ML_STR-VPRSV sy-vline 
WA_CKI_PRS_ML_STR-VERPR sy-vline 
WA_CKI_PRS_ML_STR-STPRS sy-vline 
WA_CKI_PRS_ML_STR-PEINH sy-vline 
WA_CKI_PRS_ML_STR-VMKUM sy-vline 
WA_CKI_PRS_ML_STR-VMSAL sy-vline 
WA_CKI_PRS_ML_STR-VMVPR sy-vline 
WA_CKI_PRS_ML_STR-VMVER sy-vline 
WA_CKI_PRS_ML_STR-VMSTP sy-vline 
WA_CKI_PRS_ML_STR-VMPEI sy-vline 
WA_CKI_PRS_ML_STR-VMSAV sy-vline 
WA_CKI_PRS_ML_STR-VJKUM sy-vline 
WA_CKI_PRS_ML_STR-VJSAL sy-vline 
WA_CKI_PRS_ML_STR-VJVPR sy-vline 
WA_CKI_PRS_ML_STR-VJVER sy-vline 
WA_CKI_PRS_ML_STR-VJSTP sy-vline 
WA_CKI_PRS_ML_STR-VJPEI sy-vline 
WA_CKI_PRS_ML_STR-VJSAV sy-vline 
WA_CKI_PRS_ML_STR-LVPVP sy-vline 
WA_CKI_PRS_ML_STR-VMLPV sy-vline 
WA_CKI_PRS_ML_STR-MLMAA sy-vline 
WA_CKI_PRS_ML_STR-MLAST sy-vline 
WA_CKI_PRS_ML_STR-BWTTY sy-vline 
WA_CKI_PRS_ML_STR-BWSTA sy-vline 
WA_CKI_PRS_ML_STR-VKSAL sy-vline 
WA_CKI_PRS_ML_STR-WERKS sy-vline 
WA_CKI_PRS_ML_STR-LPLPR sy-vline 
WA_CKI_PRS_ML_STR-LPLPX sy-vline 
WA_CKI_PRS_ML_STR-LBWST sy-vline 
WA_CKI_PRS_ML_STR-EXWRT sy-vline 
WA_CKI_PRS_ML_STR-EXWOB sy-vline 
WA_CKI_PRS_ML_STR-EXBUALT sy-vline 
WA_CKI_PRS_ML_STR-EXCLLOCK sy-vline 
WA_CKI_PRS_ML_STR-AUFNR sy-vline 
WA_CKI_PRS_ML_STR-SJAHR sy-vline 
WA_CKI_PRS_ML_STR-SMBLN sy-vline 
WA_CKI_PRS_ML_STR-SMBLP sy-vline 
WA_CKI_PRS_ML_STR-VMVKS sy-vline 
WA_CKI_PRS_ML_STR-VJVKS sy-vline 
WA_CKI_PRS_ML_STR-XOBEW sy-vline 
WA_CKI_PRS_ML_STR-LIFNR sy-vline 
WA_CKI_PRS_ML_STR-ORIGIN_EXTREF_CATEGORY sy-vline 
WA_CKI_PRS_ML_STR-ORIGIN_EXTREF_DATA sy-vline      INTO ld_text SEPARATED BY SPACE.

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