ABAP Select data from SAP table PSLOWMOMATDIDATS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSLOWMOMATDIDATS
*  INTO TABLE @DATA(IT_PSLOWMOMATDIDATS2).
*--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_PSLOWMOMATDIDATS INDEX 1 INTO DATA(WA_PSLOWMOMATDIDATS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSLOWMOMATDIDATS>-MANDT = 1.
<PSLOWMOMATDIDATS>-STARTDATE = 1.
<PSLOWMOMATDIDATS>-MATERIAL = 1.
<PSLOWMOMATDIDATS>-PLANT = 1.
<PSLOWMOMATDIDATS>-MATERIALBASEUNIT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSLOWMOMATDIDATS-STARTDATEM1, sy-vline,
  WA_PSLOWMOMATDIDATS-STARTDATEM2, sy-vline,
  WA_PSLOWMOMATDIDATS-STARTDATEM3, sy-vline,
  WA_PSLOWMOMATDIDATS-STARTDATEM4, sy-vline,
  WA_PSLOWMOMATDIDATS-STARTDATEM5, sy-vline,
  WA_PSLOWMOMATDIDATS-STARTDATEM6, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSLOWMOMATDIDATS 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_PSLOWMOMATDIDATS 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_PSLOWMOMATDIDATS INTO WA_PSLOWMOMATDIDATS.


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

*Conversion exit CUNIT, internal->external for field MATERIALBASEUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSLOWMOMATDIDATS-MATERIALBASEUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSLOWMOMATDIDATS-MATERIALBASEUNIT.
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_PSLOWMOMATDIDATS_STR, 
MANDT TYPE STRING,
STARTDATE TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
MATERIALBASEUNIT TYPE STRING,
STARTDATEM1 TYPE STRING,
STARTDATEM2 TYPE STRING,
STARTDATEM3 TYPE STRING,
STARTDATEM4 TYPE STRING,
STARTDATEM5 TYPE STRING,
STARTDATEM6 TYPE STRING,
STARTDATEM7 TYPE STRING,
STARTDATEM8 TYPE STRING,
STARTDATEM9 TYPE STRING,
STARTDATEM10 TYPE STRING,
ENDDATEM1 TYPE STRING,
ENDDATEM2 TYPE STRING,
ENDDATEM3 TYPE STRING,
ENDDATEM4 TYPE STRING,
ENDDATEM5 TYPE STRING,
ENDDATEM6 TYPE STRING,
ENDDATEM7 TYPE STRING,
ENDDATEM8 TYPE STRING,
ENDDATEM9 TYPE STRING,
ENDDATEM10 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSLOWMOMATDIDATS_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_PSLOWMOMATDIDATS_STR-MANDT sy-vline 
WA_PSLOWMOMATDIDATS_STR-STARTDATE sy-vline 
WA_PSLOWMOMATDIDATS_STR-MATERIAL sy-vline 
WA_PSLOWMOMATDIDATS_STR-PLANT sy-vline 
WA_PSLOWMOMATDIDATS_STR-MATERIALBASEUNIT sy-vline 
WA_PSLOWMOMATDIDATS_STR-STARTDATEM1 sy-vline 
WA_PSLOWMOMATDIDATS_STR-STARTDATEM2 sy-vline 
WA_PSLOWMOMATDIDATS_STR-STARTDATEM3 sy-vline 
WA_PSLOWMOMATDIDATS_STR-STARTDATEM4 sy-vline 
WA_PSLOWMOMATDIDATS_STR-STARTDATEM5 sy-vline 
WA_PSLOWMOMATDIDATS_STR-STARTDATEM6 sy-vline 
WA_PSLOWMOMATDIDATS_STR-STARTDATEM7 sy-vline 
WA_PSLOWMOMATDIDATS_STR-STARTDATEM8 sy-vline 
WA_PSLOWMOMATDIDATS_STR-STARTDATEM9 sy-vline 
WA_PSLOWMOMATDIDATS_STR-STARTDATEM10 sy-vline 
WA_PSLOWMOMATDIDATS_STR-ENDDATEM1 sy-vline 
WA_PSLOWMOMATDIDATS_STR-ENDDATEM2 sy-vline 
WA_PSLOWMOMATDIDATS_STR-ENDDATEM3 sy-vline 
WA_PSLOWMOMATDIDATS_STR-ENDDATEM4 sy-vline 
WA_PSLOWMOMATDIDATS_STR-ENDDATEM5 sy-vline 
WA_PSLOWMOMATDIDATS_STR-ENDDATEM6 sy-vline 
WA_PSLOWMOMATDIDATS_STR-ENDDATEM7 sy-vline 
WA_PSLOWMOMATDIDATS_STR-ENDDATEM8 sy-vline 
WA_PSLOWMOMATDIDATS_STR-ENDDATEM9 sy-vline 
WA_PSLOWMOMATDIDATS_STR-ENDDATEM10 sy-vline      INTO ld_text SEPARATED BY SPACE.

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