ABAP Select data from SAP table MMPUR_OUTLINE_AGMT_COMPONENTX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MMPUR_OUTLINE_AGMT_COMPONENTX
*  INTO TABLE @DATA(IT_MMPUR_OUTLINE_AGMT_COMPONENTX2).
*--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_MMPUR_OUTLINE_AGMT_COMPONENTX INDEX 1 INTO DATA(WA_MMPUR_OUTLINE_AGMT_COMPONENTX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MMPUR_OUTLINE_AGMT_COMPONENTX>-SCHEDULINGAGREEMENTITEM = 1.
<MMPUR_OUTLINE_AGMT_COMPONENTX>-SCHED_LINE_KEY = 1.
<MMPUR_OUTLINE_AGMT_COMPONENTX>-RES_ITEM_KEY = 1.
<MMPUR_OUTLINE_AGMT_COMPONENTX>-ITEM_NOX = 1.
<MMPUR_OUTLINE_AGMT_COMPONENTX>-SCHEDULELINE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MMPUR_OUTLINE_AGMT_COMPONENTX-RESERVATIONITEM, sy-vline,
  WA_MMPUR_OUTLINE_AGMT_COMPONENTX-MATERIAL, sy-vline,
  WA_MMPUR_OUTLINE_AGMT_COMPONENTX-ENTRY_QUANTITY, sy-vline,
  WA_MMPUR_OUTLINE_AGMT_COMPONENTX-ENTRYUNIT, sy-vline,
  WA_MMPUR_OUTLINE_AGMT_COMPONENTX-QUANTITYISFIXED, sy-vline,
  WA_MMPUR_OUTLINE_AGMT_COMPONENTX-PLANT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MMPUR_OUTLINE_AGMT_COMPONENTX 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_MMPUR_OUTLINE_AGMT_COMPONENTX 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_MMPUR_OUTLINE_AGMT_COMPONENTX INTO WA_MMPUR_OUTLINE_AGMT_COMPONENTX.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_MMPUR_OUTLINE_AGMT_COMPONENTX_STR, 
SCHEDULINGAGREEMENTITEM TYPE STRING,
SCHED_LINE_KEY TYPE STRING,
RES_ITEM_KEY TYPE STRING,
ITEM_NOX TYPE STRING,
SCHEDULELINE TYPE STRING,
RESERVATIONITEM TYPE STRING,
MATERIAL TYPE STRING,
ENTRY_QUANTITY TYPE STRING,
ENTRYUNIT TYPE STRING,
QUANTITYISFIXED TYPE STRING,
PLANT TYPE STRING,
REQUIREMENTDATE TYPE STRING,
CHANGEDOCITEMCHANGETYPE TYPE STRING,
MATERIALEXTERNALINACTLPOSTG TYPE STRING,
MATERIALUUIDINACTLPOSTG TYPE STRING,
MATERIALVERSIONINACTLPOSTG TYPE STRING,
BOMITEMCATEGORY TYPE STRING,
REQUIREDQUANTITY TYPE STRING,
BASEUNIT TYPE STRING,
MATERIALCOMPONENTISPHANTOMITEM TYPE STRING,
BATCH TYPE STRING,
ISMATERIALPROVISION TYPE STRING,
STORAGELOCATION TYPE STRING,
MATERIALLONGINACTLPOSTG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MMPUR_OUTLINE_AGMT_COMPONENTX_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_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-SCHEDULINGAGREEMENTITEM sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-SCHED_LINE_KEY sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-RES_ITEM_KEY sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-ITEM_NOX sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-SCHEDULELINE sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-RESERVATIONITEM sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-MATERIAL sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-ENTRY_QUANTITY sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-ENTRYUNIT sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-QUANTITYISFIXED sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-PLANT sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-REQUIREMENTDATE sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-CHANGEDOCITEMCHANGETYPE sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-MATERIALEXTERNALINACTLPOSTG sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-MATERIALUUIDINACTLPOSTG sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-MATERIALVERSIONINACTLPOSTG sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-BOMITEMCATEGORY sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-REQUIREDQUANTITY sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-BASEUNIT sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-MATERIALCOMPONENTISPHANTOMITEM sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-BATCH sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-ISMATERIALPROVISION sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-STORAGELOCATION sy-vline 
WA_MMPUR_OUTLINE_AGMT_COMPONENTX_STR-MATERIALLONGINACTLPOSTG sy-vline      INTO ld_text SEPARATED BY SPACE.

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