ABAP Select data from SAP table MPES_ENG_SNP_DETAILS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPES_ENG_SNP_DETAILS
*  INTO TABLE @DATA(IT_MPES_ENG_SNP_DETAILS2).
*--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_MPES_ENG_SNP_DETAILS INDEX 1 INTO DATA(WA_MPES_ENG_SNP_DETAILS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPES_ENG_SNP_DETAILS>-SNAPSHOT_ID = 1.
<MPES_ENG_SNP_DETAILS>-REVN_NMBR = 1.
<MPES_ENG_SNP_DETAILS>-MATERIAL = 1.
<MPES_ENG_SNP_DETAILS>-PLANT = 1.
<MPES_ENG_SNP_DETAILS>-BOM_USAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPES_ENG_SNP_DETAILS-BOM_ALTERNATE, sy-vline,
  WA_MPES_ENG_SNP_DETAILS-AUX_PREP_STS, sy-vline,
  WA_MPES_ENG_SNP_DETAILS-CHG_PREP_STS, sy-vline,
  WA_MPES_ENG_SNP_DETAILS-EBOM, sy-vline,
  WA_MPES_ENG_SNP_DETAILS-VISUAL_DOCUMENT, sy-vline,
  WA_MPES_ENG_SNP_DETAILS-DOCUMENT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPES_ENG_SNP_DETAILS 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_MPES_ENG_SNP_DETAILS 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_MPES_ENG_SNP_DETAILS INTO WA_MPES_ENG_SNP_DETAILS.


*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 ALPHA, internal->external for field SNAPSHOT_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPES_ENG_SNP_DETAILS-SNAPSHOT_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_ENG_SNP_DETAILS-SNAPSHOT_ID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATERIAL
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MPES_ENG_SNP_DETAILS-MATERIAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_ENG_SNP_DETAILS-MATERIAL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BOM_ALTERNATE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPES_ENG_SNP_DETAILS-BOM_ALTERNATE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_ENG_SNP_DETAILS-BOM_ALTERNATE.
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_MPES_ENG_SNP_DETAILS_STR, 
SNAPSHOT_ID TYPE STRING,
REVN_NMBR TYPE STRING,
MATERIAL TYPE STRING,
PLANT TYPE STRING,
BOM_USAGE TYPE STRING,
BOM_ALTERNATE TYPE STRING,
AUX_PREP_STS TYPE STRING,
CHG_PREP_STS TYPE STRING,
EBOM TYPE STRING,
VISUAL_DOCUMENT TYPE STRING,
DOCUMENT TYPE STRING,
OTHER_OBJ_REF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPES_ENG_SNP_DETAILS_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_MPES_ENG_SNP_DETAILS_STR-SNAPSHOT_ID sy-vline 
WA_MPES_ENG_SNP_DETAILS_STR-REVN_NMBR sy-vline 
WA_MPES_ENG_SNP_DETAILS_STR-MATERIAL sy-vline 
WA_MPES_ENG_SNP_DETAILS_STR-PLANT sy-vline 
WA_MPES_ENG_SNP_DETAILS_STR-BOM_USAGE sy-vline 
WA_MPES_ENG_SNP_DETAILS_STR-BOM_ALTERNATE sy-vline 
WA_MPES_ENG_SNP_DETAILS_STR-AUX_PREP_STS sy-vline 
WA_MPES_ENG_SNP_DETAILS_STR-CHG_PREP_STS sy-vline 
WA_MPES_ENG_SNP_DETAILS_STR-EBOM sy-vline 
WA_MPES_ENG_SNP_DETAILS_STR-VISUAL_DOCUMENT sy-vline 
WA_MPES_ENG_SNP_DETAILS_STR-DOCUMENT sy-vline 
WA_MPES_ENG_SNP_DETAILS_STR-OTHER_OBJ_REF sy-vline      INTO ld_text SEPARATED BY SPACE.

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