ABAP Select data from SAP table EHPRCS_LOG_MATERIAL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EHPRCS_LOG_MATERIAL
*  INTO TABLE @DATA(IT_EHPRCS_LOG_MATERIAL2).
*--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_EHPRCS_LOG_MATERIAL INDEX 1 INTO DATA(WA_EHPRCS_LOG_MATERIAL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EHPRCS_LOG_MATERIAL>-MATNR = 1.
<EHPRCS_LOG_MATERIAL>-MTART = 1.
<EHPRCS_LOG_MATERIAL>-MATKL = 1.
<EHPRCS_LOG_MATERIAL>-ATTYP = 1.
<EHPRCS_LOG_MATERIAL>-SPART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EHPRCS_LOG_MATERIAL-REACHRELEVANT, sy-vline,
  WA_EHPRCS_LOG_MATERIAL-NATURE, sy-vline,
  WA_EHPRCS_LOG_MATERIAL-INTERMEDIATE, sy-vline,
  WA_EHPRCS_LOG_MATERIAL-SVTRELEVANT, sy-vline,
  WA_EHPRCS_LOG_MATERIAL-ISEXEMPTED, sy-vline,
  WA_EHPRCS_LOG_MATERIAL-ASSESSMENT_STATUS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EHPRCS_LOG_MATERIAL 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_EHPRCS_LOG_MATERIAL 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_EHPRCS_LOG_MATERIAL INTO WA_EHPRCS_LOG_MATERIAL.


*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_EHPRCS_LOG_MATERIAL-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHPRCS_LOG_MATERIAL-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit DFVAL, internal->external for field SVTRELEVANT
CALL FUNCTION 'CONVERSION_EXIT_DFVAL_OUTPUT'
  EXPORTING
    input =                      WA_EHPRCS_LOG_MATERIAL-SVTRELEVANT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EHPRCS_LOG_MATERIAL-SVTRELEVANT.
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_EHPRCS_LOG_MATERIAL_STR, 
MATNR TYPE STRING,
MTART TYPE STRING,
MATKL TYPE STRING,
ATTYP TYPE STRING,
SPART TYPE STRING,
REACHRELEVANT TYPE STRING,
NATURE TYPE STRING,
INTERMEDIATE TYPE STRING,
SVTRELEVANT TYPE STRING,
ISEXEMPTED TYPE STRING,
ASSESSMENT_STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EHPRCS_LOG_MATERIAL_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_EHPRCS_LOG_MATERIAL_STR-MATNR sy-vline 
WA_EHPRCS_LOG_MATERIAL_STR-MTART sy-vline 
WA_EHPRCS_LOG_MATERIAL_STR-MATKL sy-vline 
WA_EHPRCS_LOG_MATERIAL_STR-ATTYP sy-vline 
WA_EHPRCS_LOG_MATERIAL_STR-SPART sy-vline 
WA_EHPRCS_LOG_MATERIAL_STR-REACHRELEVANT sy-vline 
WA_EHPRCS_LOG_MATERIAL_STR-NATURE sy-vline 
WA_EHPRCS_LOG_MATERIAL_STR-INTERMEDIATE sy-vline 
WA_EHPRCS_LOG_MATERIAL_STR-SVTRELEVANT sy-vline 
WA_EHPRCS_LOG_MATERIAL_STR-ISEXEMPTED sy-vline 
WA_EHPRCS_LOG_MATERIAL_STR-ASSESSMENT_STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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