ABAP Select data from SAP table GTC_PROGPOS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM GTC_PROGPOS
*  INTO TABLE @DATA(IT_GTC_PROGPOS2).
*--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_GTC_PROGPOS INDEX 1 INTO DATA(WA_GTC_PROGPOS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<GTC_PROGPOS>-POSID = 1.
<GTC_PROGPOS>-POST1 = 1.
<GTC_PROGPOS>-IZWEK = 1.
<GTC_PROGPOS>-PPRIO = 1.
<GTC_PROGPOS>-SIZECL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_GTC_PROGPOS-VERNR, sy-vline,
  WA_GTC_PROGPOS-ABJHR, sy-vline,
  WA_GTC_PROGPOS-BIJHR, sy-vline,
  WA_GTC_PROGPOS-XAKTB, sy-vline,
  WA_GTC_PROGPOS-KOKRS, sy-vline,
  WA_GTC_PROGPOS-PRCTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_GTC_PROGPOS 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_GTC_PROGPOS 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_GTC_PROGPOS INTO WA_GTC_PROGPOS.


*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 POSID, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_POSID_OUTPUT'
  EXPORTING
    input =                      WA_GTC_PROGPOS-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GTC_PROGPOS-POSID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field ABJHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_GTC_PROGPOS-ABJHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GTC_PROGPOS-ABJHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field BIJHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_GTC_PROGPOS-BIJHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GTC_PROGPOS-BIJHR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_GTC_PROGPOS-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_GTC_PROGPOS-TPLNR.
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_GTC_PROGPOS_STR, 
POSID TYPE STRING,
POST1 TYPE STRING,
IZWEK TYPE STRING,
PPRIO TYPE STRING,
SIZECL TYPE STRING,
VERNR TYPE STRING,
ABJHR TYPE STRING,
BIJHR TYPE STRING,
XAKTB TYPE STRING,
KOKRS TYPE STRING,
PRCTR TYPE STRING,
KOSTL TYPE STRING,
RCOMP TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
ERGSO TYPE STRING,
WERKS TYPE STRING,
BEBER TYPE STRING,
TPLNR TYPE STRING,
LAND1 TYPE STRING,
OWAERS TYPE STRING,
RHIER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_GTC_PROGPOS_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_GTC_PROGPOS_STR-POSID sy-vline 
WA_GTC_PROGPOS_STR-POST1 sy-vline 
WA_GTC_PROGPOS_STR-IZWEK sy-vline 
WA_GTC_PROGPOS_STR-PPRIO sy-vline 
WA_GTC_PROGPOS_STR-SIZECL sy-vline 
WA_GTC_PROGPOS_STR-VERNR sy-vline 
WA_GTC_PROGPOS_STR-ABJHR sy-vline 
WA_GTC_PROGPOS_STR-BIJHR sy-vline 
WA_GTC_PROGPOS_STR-XAKTB sy-vline 
WA_GTC_PROGPOS_STR-KOKRS sy-vline 
WA_GTC_PROGPOS_STR-PRCTR sy-vline 
WA_GTC_PROGPOS_STR-KOSTL sy-vline 
WA_GTC_PROGPOS_STR-RCOMP sy-vline 
WA_GTC_PROGPOS_STR-BUKRS sy-vline 
WA_GTC_PROGPOS_STR-GSBER sy-vline 
WA_GTC_PROGPOS_STR-ERGSO sy-vline 
WA_GTC_PROGPOS_STR-WERKS sy-vline 
WA_GTC_PROGPOS_STR-BEBER sy-vline 
WA_GTC_PROGPOS_STR-TPLNR sy-vline 
WA_GTC_PROGPOS_STR-LAND1 sy-vline 
WA_GTC_PROGPOS_STR-OWAERS sy-vline 
WA_GTC_PROGPOS_STR-RHIER sy-vline      INTO ld_text SEPARATED BY SPACE.

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