ABAP Select data from SAP table PMXSTAX_ALV_OVERVIEW_CE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PMXSTAX_ALV_OVERVIEW_CE
*  INTO TABLE @DATA(IT_PMXSTAX_ALV_OVERVIEW_CE2).
*--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_PMXSTAX_ALV_OVERVIEW_CE INDEX 1 INTO DATA(WA_PMXSTAX_ALV_OVERVIEW_CE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PMXSTAX_ALV_OVERVIEW_CE>-RFC = 1.
<PMXSTAX_ALV_OVERVIEW_CE>-BUKRS = 1.
<PMXSTAX_ALV_OVERVIEW_CE>-WERKS = 1.
<PMXSTAX_ALV_OVERVIEW_CE>-BTRTL = 1.
<PMXSTAX_ALV_OVERVIEW_CE>-ABKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PMXSTAX_ALV_OVERVIEW_CE-PERSG, sy-vline,
  WA_PMXSTAX_ALV_OVERVIEW_CE-PERSK, sy-vline,
  WA_PMXSTAX_ALV_OVERVIEW_CE-PERSONID_EXT, sy-vline,
  WA_PMXSTAX_ALV_OVERVIEW_CE-PERNR, sy-vline,
  WA_PMXSTAX_ALV_OVERVIEW_CE-NPNAM, sy-vline,
  WA_PMXSTAX_ALV_OVERVIEW_CE-ANPRO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PMXSTAX_ALV_OVERVIEW_CE 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_PMXSTAX_ALV_OVERVIEW_CE 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_PMXSTAX_ALV_OVERVIEW_CE INTO WA_PMXSTAX_ALV_OVERVIEW_CE.


*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 PIDEX, internal->external for field PERSONID_EXT
CALL FUNCTION 'CONVERSION_EXIT_PIDEX_OUTPUT'
  EXPORTING
    input =                      WA_PMXSTAX_ALV_OVERVIEW_CE-PERSONID_EXT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMXSTAX_ALV_OVERVIEW_CE-PERSONID_EXT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field ANPRO
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PMXSTAX_ALV_OVERVIEW_CE-ANPRO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PMXSTAX_ALV_OVERVIEW_CE-ANPRO.
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_PMXSTAX_ALV_OVERVIEW_CE_STR, 
RFC TYPE STRING,
BUKRS TYPE STRING,
WERKS TYPE STRING,
BTRTL TYPE STRING,
ABKRS TYPE STRING,
PERSG TYPE STRING,
PERSK TYPE STRING,
PERSONID_EXT TYPE STRING,
PERNR TYPE STRING,
NPNAM TYPE STRING,
ANPRO TYPE STRING,
STMON TYPE STRING,
STATE TYPE STRING,
IMEST TYPE STRING,
BIMNO TYPE STRING,
IMNSS TYPE STRING,
IMSNO TYPE STRING,
STBEG TYPE STRING,
STEND TYPE STRING,
DELIN TYPE STRING,
DEEXC TYPE STRING,
DEMAR TYPE STRING,
DEQTA TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
TOT_SUPPL_AMT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PMXSTAX_ALV_OVERVIEW_CE_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_PMXSTAX_ALV_OVERVIEW_CE_STR-RFC sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-BUKRS sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-WERKS sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-BTRTL sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-ABKRS sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-PERSG sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-PERSK sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-PERSONID_EXT sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-PERNR sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-NPNAM sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-ANPRO sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-STMON sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-STATE sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-IMEST sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-BIMNO sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-IMNSS sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-IMSNO sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-STBEG sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-STEND sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-DELIN sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-DEEXC sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-DEMAR sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-DEQTA sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-BEGDA sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-ENDDA sy-vline 
WA_PMXSTAX_ALV_OVERVIEW_CE_STR-TOT_SUPPL_AMT sy-vline      INTO ld_text SEPARATED BY SPACE.

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