ABAP Select data from SAP table MATDOC_EXTRACT into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MATDOC_EXTRACT
*  INTO TABLE @DATA(IT_MATDOC_EXTRACT2).
*--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_MATDOC_EXTRACT INDEX 1 INTO DATA(WA_MATDOC_EXTRACT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MATDOC_EXTRACT>-MANDT = 1.
<MATDOC_EXTRACT>-KEY1 = 1.
<MATDOC_EXTRACT>-KEY2 = 1.
<MATDOC_EXTRACT>-KEY3 = 1.
<MATDOC_EXTRACT>-KEY4 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MATDOC_EXTRACT-KEY5, sy-vline,
  WA_MATDOC_EXTRACT-KEY6, sy-vline,
  WA_MATDOC_EXTRACT-RECORD_TYPE, sy-vline,
  WA_MATDOC_EXTRACT-BUKRS, sy-vline,
  WA_MATDOC_EXTRACT-MATBF, sy-vline,
  WA_MATDOC_EXTRACT-WERKS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MATDOC_EXTRACT 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_MATDOC_EXTRACT 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_MATDOC_EXTRACT INTO WA_MATDOC_EXTRACT.


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

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

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

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

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

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

*Conversion exit PERI7, internal->external for field GJPER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_MATDOC_EXTRACT-GJPER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MATDOC_EXTRACT-GJPER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PERI7, internal->external for field GJPER_CURR_PER
CALL FUNCTION 'CONVERSION_EXIT_PERI7_OUTPUT'
  EXPORTING
    input =                      WA_MATDOC_EXTRACT-GJPER_CURR_PER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MATDOC_EXTRACT-GJPER_CURR_PER.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit CUNIT, internal->external for field /CWM/MEINS_SID
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MATDOC_EXTRACT-/CWM/MEINS_SID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MATDOC_EXTRACT-/CWM/MEINS_SID.
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_MATDOC_EXTRACT_STR, 
MANDT TYPE STRING,
KEY1 TYPE STRING,
KEY2 TYPE STRING,
KEY3 TYPE STRING,
KEY4 TYPE STRING,
KEY5 TYPE STRING,
KEY6 TYPE STRING,
RECORD_TYPE TYPE STRING,
BUKRS TYPE STRING,
MATBF TYPE STRING,
WERKS TYPE STRING,
LGORT_SID TYPE STRING,
CHARG_SID TYPE STRING,
LIFNR_SID TYPE STRING,
MAT_KDAUF TYPE STRING,
MAT_KDPOS TYPE STRING,
MAT_PSPNR TYPE STRING,
KUNNR_SID TYPE STRING,
SOBKZ TYPE STRING,
LBBSA_SID TYPE STRING,
DISUB_OWNER_SID TYPE STRING,
RESOURCENAME_SID TYPE STRING,
PERIV TYPE STRING,
GJPER TYPE STRING,
GJPER_CURR_PER TYPE STRING,
STOCK_IND_L2 TYPE STRING,
STOCK_VKWRT_L1 TYPE STRING,
STOCK_VKWRT_L2 TYPE STRING,
STOCK_QTY_L1 TYPE STRING,
STOCK_QTY_L2 TYPE STRING,
/CWM/STOCK_QTY_L1 TYPE STRING,
/CWM/STOCK_QTY_L2 TYPE STRING,
KZBWS TYPE STRING,
XOBEW TYPE STRING,
CPUDT_L1 TYPE STRING,
CPUDT_L2 TYPE STRING,
MEINS TYPE STRING,
WAERS TYPE STRING,
CONSUMPTION_QTY TYPE STRING,
/CWM/MEINS TYPE STRING,
/CWM/CONSUMPTION_QTY TYPE STRING,
/CWM/MEINS_SID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MATDOC_EXTRACT_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_MATDOC_EXTRACT_STR-MANDT sy-vline 
WA_MATDOC_EXTRACT_STR-KEY1 sy-vline 
WA_MATDOC_EXTRACT_STR-KEY2 sy-vline 
WA_MATDOC_EXTRACT_STR-KEY3 sy-vline 
WA_MATDOC_EXTRACT_STR-KEY4 sy-vline 
WA_MATDOC_EXTRACT_STR-KEY5 sy-vline 
WA_MATDOC_EXTRACT_STR-KEY6 sy-vline 
WA_MATDOC_EXTRACT_STR-RECORD_TYPE sy-vline 
WA_MATDOC_EXTRACT_STR-BUKRS sy-vline 
WA_MATDOC_EXTRACT_STR-MATBF sy-vline 
WA_MATDOC_EXTRACT_STR-WERKS sy-vline 
WA_MATDOC_EXTRACT_STR-LGORT_SID sy-vline 
WA_MATDOC_EXTRACT_STR-CHARG_SID sy-vline 
WA_MATDOC_EXTRACT_STR-LIFNR_SID sy-vline 
WA_MATDOC_EXTRACT_STR-MAT_KDAUF sy-vline 
WA_MATDOC_EXTRACT_STR-MAT_KDPOS sy-vline 
WA_MATDOC_EXTRACT_STR-MAT_PSPNR sy-vline 
WA_MATDOC_EXTRACT_STR-KUNNR_SID sy-vline 
WA_MATDOC_EXTRACT_STR-SOBKZ sy-vline 
WA_MATDOC_EXTRACT_STR-LBBSA_SID sy-vline 
WA_MATDOC_EXTRACT_STR-DISUB_OWNER_SID sy-vline 
WA_MATDOC_EXTRACT_STR-RESOURCENAME_SID sy-vline 
WA_MATDOC_EXTRACT_STR-PERIV sy-vline 
WA_MATDOC_EXTRACT_STR-GJPER sy-vline 
WA_MATDOC_EXTRACT_STR-GJPER_CURR_PER sy-vline 
WA_MATDOC_EXTRACT_STR-STOCK_IND_L2 sy-vline 
WA_MATDOC_EXTRACT_STR-STOCK_VKWRT_L1 sy-vline 
WA_MATDOC_EXTRACT_STR-STOCK_VKWRT_L2 sy-vline 
WA_MATDOC_EXTRACT_STR-STOCK_QTY_L1 sy-vline 
WA_MATDOC_EXTRACT_STR-STOCK_QTY_L2 sy-vline 
WA_MATDOC_EXTRACT_STR-/CWM/STOCK_QTY_L1 sy-vline 
WA_MATDOC_EXTRACT_STR-/CWM/STOCK_QTY_L2 sy-vline 
WA_MATDOC_EXTRACT_STR-KZBWS sy-vline 
WA_MATDOC_EXTRACT_STR-XOBEW sy-vline 
WA_MATDOC_EXTRACT_STR-CPUDT_L1 sy-vline 
WA_MATDOC_EXTRACT_STR-CPUDT_L2 sy-vline 
WA_MATDOC_EXTRACT_STR-MEINS sy-vline 
WA_MATDOC_EXTRACT_STR-WAERS sy-vline 
WA_MATDOC_EXTRACT_STR-CONSUMPTION_QTY sy-vline 
WA_MATDOC_EXTRACT_STR-/CWM/MEINS sy-vline 
WA_MATDOC_EXTRACT_STR-/CWM/CONSUMPTION_QTY sy-vline 
WA_MATDOC_EXTRACT_STR-/CWM/MEINS_SID sy-vline      INTO ld_text SEPARATED BY SPACE.

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