ABAP Select data from SAP table /ISDFPS/ME_MM_AUTH_INV_COMP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ISDFPS/ME_MM_AUTH_INV_COMP 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 /ISDFPS/ME_MM_AUTH_INV_COMP. 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 /ISDFPS/ME_MM_AUTH_INV_COMP 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_/ISDFPS/ME_MM_AUTH_INV_COMP TYPE STANDARD TABLE OF /ISDFPS/ME_MM_AUTH_INV_COMP,
      WA_/ISDFPS/ME_MM_AUTH_INV_COMP TYPE /ISDFPS/ME_MM_AUTH_INV_COMP,
      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: </ISDFPS/ME_MM_AUTH_INV_COMP> TYPE /ISDFPS/ME_MM_AUTH_INV_COMP.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ISDFPS/ME_MM_AUTH_INV_COMP
  INTO TABLE IT_/ISDFPS/ME_MM_AUTH_INV_COMP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ISDFPS/ME_MM_AUTH_INV_COMP
*  INTO TABLE @DATA(IT_/ISDFPS/ME_MM_AUTH_INV_COMP2).
*--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_/ISDFPS/ME_MM_AUTH_INV_COMP INDEX 1 INTO DATA(WA_/ISDFPS/ME_MM_AUTH_INV_COMP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ISDFPS/ME_MM_AUTH_INV_COMP ASSIGNING </ISDFPS/ME_MM_AUTH_INV_COMP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ISDFPS/ME_MM_AUTH_INV_COMP>-PLVAR = 1.
</ISDFPS/ME_MM_AUTH_INV_COMP>-OTYPE = 1.
</ISDFPS/ME_MM_AUTH_INV_COMP>-OBJID = 1.
</ISDFPS/ME_MM_AUTH_INV_COMP>-AICOMP_TYPE = 1.
</ISDFPS/ME_MM_AUTH_INV_COMP>-PNGUID = 1.

ENDLOOP.

LOOP AT IT_/ISDFPS/ME_MM_AUTH_INV_COMP INTO WA_/ISDFPS/ME_MM_AUTH_INV_COMP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ISDFPS/ME_MM_AUTH_INV_COMP-PNAME, sy-vline,
  WA_/ISDFPS/ME_MM_AUTH_INV_COMP-PNTEXT, sy-vline,
  WA_/ISDFPS/ME_MM_AUTH_INV_COMP-QUAUTH, sy-vline,
  WA_/ISDFPS/ME_MM_AUTH_INV_COMP-QUTAR, sy-vline,
  WA_/ISDFPS/ME_MM_AUTH_INV_COMP-QUINV, sy-vline,
  WA_/ISDFPS/ME_MM_AUTH_INV_COMP-QUORD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ISDFPS/ME_MM_AUTH_INV_COMP 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_/ISDFPS/ME_MM_AUTH_INV_COMP 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_/ISDFPS/ME_MM_AUTH_INV_COMP INTO WA_/ISDFPS/ME_MM_AUTH_INV_COMP.


*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_/ISDFPS/ME_MM_AUTH_INV_COMP_STR, 
PLVAR TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
AICOMP_TYPE TYPE STRING,
PNGUID TYPE STRING,
PNAME TYPE STRING,
PNTEXT TYPE STRING,
QUAUTH TYPE STRING,
QUTAR TYPE STRING,
QUINV TYPE STRING,
QUORD TYPE STRING,
QUPLN TYPE STRING,
QUDIF TYPE STRING,
QUADJ TYPE STRING,
QUMC TYPE STRING,
SER_FLAG TYPE STRING,
CASE_TYPE TYPE STRING,
LIGHT TYPE STRING,
STATUSICON TYPE STRING,
RIC TYPE STRING,
MATKL TYPE STRING,
QUANT_MIN TYPE STRING,
QUANT_MAX TYPE STRING,
QUEQUI_INST TYPE STRING,
QURES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ISDFPS/ME_MM_AUTH_INV_COMP_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_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-PLVAR sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-OTYPE sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-OBJID sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-AICOMP_TYPE sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-PNGUID sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-PNAME sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-PNTEXT sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-QUAUTH sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-QUTAR sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-QUINV sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-QUORD sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-QUPLN sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-QUDIF sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-QUADJ sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-QUMC sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-SER_FLAG sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-CASE_TYPE sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-LIGHT sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-STATUSICON sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-RIC sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-MATKL sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-QUANT_MIN sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-QUANT_MAX sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-QUEQUI_INST sy-vline 
WA_/ISDFPS/ME_MM_AUTH_INV_COMP_STR-QURES sy-vline      INTO ld_text SEPARATED BY SPACE.

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