ABAP Select data from SAP table T8JPOP into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T8JPOP 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 T8JPOP. 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 T8JPOP 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_T8JPOP TYPE STANDARD TABLE OF T8JPOP,
      WA_T8JPOP TYPE T8JPOP,
      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: <T8JPOP> TYPE T8JPOP.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T8JPOP.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T8JPOP
  INTO TABLE IT_T8JPOP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T8JPOP
*  INTO TABLE @DATA(IT_T8JPOP2).
*--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_T8JPOP INDEX 1 INTO DATA(WA_T8JPOP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T8JPOP ASSIGNING <T8JPOP>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T8JPOP>-TITLE = 1.
<T8JPOP>-TEXTLINE1 = 1.
<T8JPOP>-TEXTLINE2 = 1.
<T8JPOP>-TEXTLINE3 = 1.
<T8JPOP>-PO = 1.

ENDLOOP.

LOOP AT IT_T8JPOP INTO WA_T8JPOP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T8JPOP-TEXTLINE4, sy-vline,
  WA_T8JPOP-POITEM, sy-vline,
  WA_T8JPOP-TOTAL, sy-vline,
  WA_T8JPOP-UNIT, sy-vline,
  WA_T8JPOP-COLUMN1, sy-vline,
  WA_T8JPOP-COLUMN2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T8JPOP 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_T8JPOP 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_T8JPOP INTO WA_T8JPOP.


*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 PO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JPOP-PO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JPOP-PO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_T8JPOP-UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JPOP-UNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VNAME
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JPOP-VNAME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JPOP-VNAME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EGRUP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JPOP-EGRUP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JPOP-EGRUP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RECID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_T8JPOP-RECID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T8JPOP-RECID.
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_T8JPOP_STR, 
TITLE TYPE STRING,
TEXTLINE1 TYPE STRING,
TEXTLINE2 TYPE STRING,
TEXTLINE3 TYPE STRING,
PO TYPE STRING,
TEXTLINE4 TYPE STRING,
POITEM TYPE STRING,
TOTAL TYPE STRING,
UNIT TYPE STRING,
COLUMN1 TYPE STRING,
COLUMN2 TYPE STRING,
COLUMN3 TYPE STRING,
COLUMN4 TYPE STRING,
COLUMN5 TYPE STRING,
COLUMN6 TYPE STRING,
VNAME TYPE STRING,
EGRUP TYPE STRING,
RECID TYPE STRING,
GR_QUANT TYPE STRING,
IR_QUANT TYPE STRING,
ASSIGNED TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T8JPOP_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_T8JPOP_STR-TITLE sy-vline 
WA_T8JPOP_STR-TEXTLINE1 sy-vline 
WA_T8JPOP_STR-TEXTLINE2 sy-vline 
WA_T8JPOP_STR-TEXTLINE3 sy-vline 
WA_T8JPOP_STR-PO sy-vline 
WA_T8JPOP_STR-TEXTLINE4 sy-vline 
WA_T8JPOP_STR-POITEM sy-vline 
WA_T8JPOP_STR-TOTAL sy-vline 
WA_T8JPOP_STR-UNIT sy-vline 
WA_T8JPOP_STR-COLUMN1 sy-vline 
WA_T8JPOP_STR-COLUMN2 sy-vline 
WA_T8JPOP_STR-COLUMN3 sy-vline 
WA_T8JPOP_STR-COLUMN4 sy-vline 
WA_T8JPOP_STR-COLUMN5 sy-vline 
WA_T8JPOP_STR-COLUMN6 sy-vline 
WA_T8JPOP_STR-VNAME sy-vline 
WA_T8JPOP_STR-EGRUP sy-vline 
WA_T8JPOP_STR-RECID sy-vline 
WA_T8JPOP_STR-GR_QUANT sy-vline 
WA_T8JPOP_STR-IR_QUANT sy-vline 
WA_T8JPOP_STR-ASSIGNED sy-vline      INTO ld_text SEPARATED BY SPACE.

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