ABAP Select data from SAP table MPES_PROJ_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_PROJ_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_PROJ_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_PROJ_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_PROJ_DETAILS TYPE STANDARD TABLE OF MPES_PROJ_DETAILS,
      WA_MPES_PROJ_DETAILS TYPE MPES_PROJ_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_PROJ_DETAILS> TYPE MPES_PROJ_DETAILS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MPES_PROJ_DETAILS
*  INTO TABLE @DATA(IT_MPES_PROJ_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_PROJ_DETAILS INDEX 1 INTO DATA(WA_MPES_PROJ_DETAILS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MPES_PROJ_DETAILS>-MATNR = 1.
<MPES_PROJ_DETAILS>-WERKS = 1.
<MPES_PROJ_DETAILS>-STLAN = 1.
<MPES_PROJ_DETAILS>-STLAL = 1.
<MPES_PROJ_DETAILS>-BOM_VERSN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MPES_PROJ_DETAILS-PROFL, sy-vline,
  WA_MPES_PROJ_DETAILS-PLFAZ, sy-vline,
  WA_MPES_PROJ_DETAILS-PLSEZ, sy-vline,
  WA_MPES_PROJ_DETAILS-DISPO, sy-vline,
  WA_MPES_PROJ_DETAILS-PLGRP, sy-vline,
  WA_MPES_PROJ_DETAILS-PSPID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MPES_PROJ_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_PROJ_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_PROJ_DETAILS INTO WA_MPES_PROJ_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 MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MPES_PROJ_DETAILS-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_PROJ_DETAILS-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ABPSN, internal->external for field PSPID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_MPES_PROJ_DETAILS-PSPID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_PROJ_DETAILS-PSPID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_MPES_PROJ_DETAILS-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_PROJ_DETAILS-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSN, internal->external for field TEMPLATE_PROJ
CALL FUNCTION 'CONVERSION_EXIT_ABPSN_OUTPUT'
  EXPORTING
    input =                      WA_MPES_PROJ_DETAILS-TEMPLATE_PROJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_PROJ_DETAILS-TEMPLATE_PROJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field STLNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_MPES_PROJ_DETAILS-STLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_PROJ_DETAILS-STLNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CCMAT, internal->external for field MATNR_LO
CALL FUNCTION 'CONVERSION_EXIT_CCMAT_OUTPUT'
  EXPORTING
    input =                      WA_MPES_PROJ_DETAILS-MATNR_LO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_PROJ_DETAILS-MATNR_LO.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field STARTUP_LO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MPES_PROJ_DETAILS-STARTUP_LO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MPES_PROJ_DETAILS-STARTUP_LO.
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_PROJ_DETAILS_STR, 
MATNR TYPE STRING,
WERKS TYPE STRING,
STLAN TYPE STRING,
STLAL TYPE STRING,
BOM_VERSN TYPE STRING,
PROFL TYPE STRING,
PLFAZ TYPE STRING,
PLSEZ TYPE STRING,
DISPO TYPE STRING,
PLGRP TYPE STRING,
PSPID TYPE STRING,
TECHS TYPE STRING,
POST1 TYPE STRING,
OBJNR TYPE STRING,
MAKTG TYPE STRING,
TXT30 TYPE STRING,
PROFI_TXT TYPE STRING,
MODEL_DESC TYPE STRING,
POSID TYPE STRING,
TEMPLATE_PROJ TYPE STRING,
MULTI_WBS_DESC TYPE STRING,
STLNR TYPE STRING,
AUFNR TYPE STRING,
WBS_CONTROL TYPE STRING,
WBS_FACET TYPE STRING,
EXPLOSION_DATE TYPE STRING,
DATE_LO TYPE STRING,
DATE_HI TYPE STRING,
DATE_OI TYPE STRING,
MATNR_LO TYPE STRING,
SERNR_LO TYPE STRING,
SERNR_HI TYPE STRING,
PRODUCT_LO TYPE STRING,
CLASS_LO TYPE STRING,
CLASSTY_LO TYPE STRING,
PLANT_LO TYPE STRING,
STARTUP_LO TYPE STRING,
LOCNO_LO TYPE STRING,
SERNR_OI TYPE STRING,
VERNR TYPE STRING,
VERSION_SELECTION TYPE STRING,
MODEL_UNIT TYPE STRING,
ANTXT TYPE STRING,
TXT04 TYPE STRING,
STATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MPES_PROJ_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_PROJ_DETAILS_STR-MATNR sy-vline 
WA_MPES_PROJ_DETAILS_STR-WERKS sy-vline 
WA_MPES_PROJ_DETAILS_STR-STLAN sy-vline 
WA_MPES_PROJ_DETAILS_STR-STLAL sy-vline 
WA_MPES_PROJ_DETAILS_STR-BOM_VERSN sy-vline 
WA_MPES_PROJ_DETAILS_STR-PROFL sy-vline 
WA_MPES_PROJ_DETAILS_STR-PLFAZ sy-vline 
WA_MPES_PROJ_DETAILS_STR-PLSEZ sy-vline 
WA_MPES_PROJ_DETAILS_STR-DISPO sy-vline 
WA_MPES_PROJ_DETAILS_STR-PLGRP sy-vline 
WA_MPES_PROJ_DETAILS_STR-PSPID sy-vline 
WA_MPES_PROJ_DETAILS_STR-TECHS sy-vline 
WA_MPES_PROJ_DETAILS_STR-POST1 sy-vline 
WA_MPES_PROJ_DETAILS_STR-OBJNR sy-vline 
WA_MPES_PROJ_DETAILS_STR-MAKTG sy-vline 
WA_MPES_PROJ_DETAILS_STR-TXT30 sy-vline 
WA_MPES_PROJ_DETAILS_STR-PROFI_TXT sy-vline 
WA_MPES_PROJ_DETAILS_STR-MODEL_DESC sy-vline 
WA_MPES_PROJ_DETAILS_STR-POSID sy-vline 
WA_MPES_PROJ_DETAILS_STR-TEMPLATE_PROJ sy-vline 
WA_MPES_PROJ_DETAILS_STR-MULTI_WBS_DESC sy-vline 
WA_MPES_PROJ_DETAILS_STR-STLNR sy-vline 
WA_MPES_PROJ_DETAILS_STR-AUFNR sy-vline 
WA_MPES_PROJ_DETAILS_STR-WBS_CONTROL sy-vline 
WA_MPES_PROJ_DETAILS_STR-WBS_FACET sy-vline 
WA_MPES_PROJ_DETAILS_STR-EXPLOSION_DATE sy-vline 
WA_MPES_PROJ_DETAILS_STR-DATE_LO sy-vline 
WA_MPES_PROJ_DETAILS_STR-DATE_HI sy-vline 
WA_MPES_PROJ_DETAILS_STR-DATE_OI sy-vline 
WA_MPES_PROJ_DETAILS_STR-MATNR_LO sy-vline 
WA_MPES_PROJ_DETAILS_STR-SERNR_LO sy-vline 
WA_MPES_PROJ_DETAILS_STR-SERNR_HI sy-vline 
WA_MPES_PROJ_DETAILS_STR-PRODUCT_LO sy-vline 
WA_MPES_PROJ_DETAILS_STR-CLASS_LO sy-vline 
WA_MPES_PROJ_DETAILS_STR-CLASSTY_LO sy-vline 
WA_MPES_PROJ_DETAILS_STR-PLANT_LO sy-vline 
WA_MPES_PROJ_DETAILS_STR-STARTUP_LO sy-vline 
WA_MPES_PROJ_DETAILS_STR-LOCNO_LO sy-vline 
WA_MPES_PROJ_DETAILS_STR-SERNR_OI sy-vline 
WA_MPES_PROJ_DETAILS_STR-VERNR sy-vline 
WA_MPES_PROJ_DETAILS_STR-VERSION_SELECTION sy-vline 
WA_MPES_PROJ_DETAILS_STR-MODEL_UNIT sy-vline 
WA_MPES_PROJ_DETAILS_STR-ANTXT sy-vline 
WA_MPES_PROJ_DETAILS_STR-TXT04 sy-vline 
WA_MPES_PROJ_DETAILS_STR-STATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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