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

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ISDFPS/S_PE_MAT_ALV
*  INTO TABLE @DATA(IT_/ISDFPS/S_PE_MAT_ALV2).
*--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/S_PE_MAT_ALV INDEX 1 INTO DATA(WA_/ISDFPS/S_PE_MAT_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ISDFPS/S_PE_MAT_ALV>-POS = 1.
</ISDFPS/S_PE_MAT_ALV>-TO_BE_ISSUED = 1.
</ISDFPS/S_PE_MAT_ALV>-MATNR = 1.
</ISDFPS/S_PE_MAT_ALV>-MAKTX = 1.
</ISDFPS/S_PE_MAT_ALV>-QUANT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ISDFPS/S_PE_MAT_ALV-QUINV, sy-vline,
  WA_/ISDFPS/S_PE_MAT_ALV-QUGIR, sy-vline,
  WA_/ISDFPS/S_PE_MAT_ALV-MEINS, sy-vline,
  WA_/ISDFPS/S_PE_MAT_ALV-UTYPE, sy-vline,
  WA_/ISDFPS/S_PE_MAT_ALV-EXTWG, sy-vline,
  WA_/ISDFPS/S_PE_MAT_ALV-XCHPF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ISDFPS/S_PE_MAT_ALV 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/S_PE_MAT_ALV 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/S_PE_MAT_ALV INTO WA_/ISDFPS/S_PE_MAT_ALV.


*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_/ISDFPS/S_PE_MAT_ALV-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/S_PE_MAT_ALV-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GERNR, internal->external for field SERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/S_PE_MAT_ALV-SERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/S_PE_MAT_ALV-SERNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field SRMDOCNO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ISDFPS/S_PE_MAT_ALV-SRMDOCNO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ISDFPS/S_PE_MAT_ALV-SRMDOCNO.
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_/ISDFPS/S_PE_MAT_ALV_STR, 
POS TYPE STRING,
TO_BE_ISSUED TYPE STRING,
MATNR TYPE STRING,
MAKTX TYPE STRING,
QUANT TYPE STRING,
QUINV TYPE STRING,
QUGIR TYPE STRING,
MEINS TYPE STRING,
UTYPE TYPE STRING,
EXTWG TYPE STRING,
XCHPF TYPE STRING,
BATCH TYPE STRING,
BATCH_TEXT TYPE STRING,
MPO_GUID TYPE STRING,
MPO_ID TYPE STRING,
MPO_TXT TYPE STRING,
MC_GUID TYPE STRING,
MC_ID TYPE STRING,
MC_TXT TYPE STRING,
EPA_GUID TYPE STRING,
EPA_ID TYPE STRING,
EPA_TXT TYPE STRING,
OBJID TYPE STRING,
VALID_FROM TYPE STRING,
VALID_TO TYPE STRING,
SERNP TYPE STRING,
SERNR TYPE STRING,
IUID_RELEVANT TYPE STRING,
UII TYPE STRING,
STATUS TYPE STRING,
MAT_STORAGE TYPE STRING,
WERKS TYPE STRING,
NAME1 TYPE STRING,
LGORT TYPE STRING,
LGOBE TYPE STRING,
LGORT_HU TYPE STRING,
LGOBE_HU TYPE STRING,
EXIDV_HU TYPE STRING,
VEPOS TYPE STRING,
READ_ONLY TYPE STRING,
SERNRSTATUS TYPE STRING,
SERNRSTATUSTXT TYPE STRING,
PSPNR TYPE STRING,
ASSIGNMENT_TYPE TYPE STRING,
ASSIGNMENT_TEXT TYPE STRING,
SHORT TYPE STRING,
STEXT TYPE STRING,
SRMDOCNO TYPE STRING,
SRMDOCITMNO TYPE STRING,
SBSTS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ISDFPS/S_PE_MAT_ALV_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/S_PE_MAT_ALV_STR-POS sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-TO_BE_ISSUED sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-MATNR sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-MAKTX sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-QUANT sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-QUINV sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-QUGIR sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-MEINS sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-UTYPE sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-EXTWG sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-XCHPF sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-BATCH sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-BATCH_TEXT sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-MPO_GUID sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-MPO_ID sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-MPO_TXT sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-MC_GUID sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-MC_ID sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-MC_TXT sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-EPA_GUID sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-EPA_ID sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-EPA_TXT sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-OBJID sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-VALID_FROM sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-VALID_TO sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-SERNP sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-SERNR sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-IUID_RELEVANT sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-UII sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-STATUS sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-MAT_STORAGE sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-WERKS sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-NAME1 sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-LGORT sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-LGOBE sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-LGORT_HU sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-LGOBE_HU sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-EXIDV_HU sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-VEPOS sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-READ_ONLY sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-SERNRSTATUS sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-SERNRSTATUSTXT sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-PSPNR sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-ASSIGNMENT_TYPE sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-ASSIGNMENT_TEXT sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-SHORT sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-STEXT sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-SRMDOCNO sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-SRMDOCITMNO sy-vline 
WA_/ISDFPS/S_PE_MAT_ALV_STR-SBSTS sy-vline      INTO ld_text SEPARATED BY SPACE.

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