ABAP Select data from SAP table /SAPAPO/TR_E_TRQTAP_SRC into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SAPAPO/TR_E_TRQTAP_SRC 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 /SAPAPO/TR_E_TRQTAP_SRC. 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 /SAPAPO/TR_E_TRQTAP_SRC 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_/SAPAPO/TR_E_TRQTAP_SRC TYPE STANDARD TABLE OF /SAPAPO/TR_E_TRQTAP_SRC,
      WA_/SAPAPO/TR_E_TRQTAP_SRC TYPE /SAPAPO/TR_E_TRQTAP_SRC,
      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: </SAPAPO/TR_E_TRQTAP_SRC> TYPE /SAPAPO/TR_E_TRQTAP_SRC.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SAPAPO/TR_E_TRQTAP_SRC
  INTO TABLE IT_/SAPAPO/TR_E_TRQTAP_SRC.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SAPAPO/TR_E_TRQTAP_SRC
*  INTO TABLE @DATA(IT_/SAPAPO/TR_E_TRQTAP_SRC2).
*--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_/SAPAPO/TR_E_TRQTAP_SRC INDEX 1 INTO DATA(WA_/SAPAPO/TR_E_TRQTAP_SRC2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SAPAPO/TR_E_TRQTAP_SRC ASSIGNING </SAPAPO/TR_E_TRQTAP_SRC>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SAPAPO/TR_E_TRQTAP_SRC>-EXT_MATNR = 1.
</SAPAPO/TR_E_TRQTAP_SRC>-EXT_LOCNO = 1.
</SAPAPO/TR_E_TRQTAP_SRC>-EXT_LOCTYPE = 1.
</SAPAPO/TR_E_TRQTAP_SRC>-MODEL = 1.
</SAPAPO/TR_E_TRQTAP_SRC>-QTDIR = 1.

ENDLOOP.

LOOP AT IT_/SAPAPO/TR_E_TRQTAP_SRC INTO WA_/SAPAPO/TR_E_TRQTAP_SRC.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SAPAPO/TR_E_TRQTAP_SRC-VERSIOEX, sy-vline,
  WA_/SAPAPO/TR_E_TRQTAP_SRC-VALFR, sy-vline,
  WA_/SAPAPO/TR_E_TRQTAP_SRC-VALTO, sy-vline,
  WA_/SAPAPO/TR_E_TRQTAP_SRC-EXT_LOCNOFR, sy-vline,
  WA_/SAPAPO/TR_E_TRQTAP_SRC-EXT_LOCTYPEFR, sy-vline,
  WA_/SAPAPO/TR_E_TRQTAP_SRC-VALFR_P, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SAPAPO/TR_E_TRQTAP_SRC 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_/SAPAPO/TR_E_TRQTAP_SRC 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_/SAPAPO/TR_E_TRQTAP_SRC INTO WA_/SAPAPO/TR_E_TRQTAP_SRC.


*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 EXT_MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/TR_E_TRQTAP_SRC-EXT_MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/TR_E_TRQTAP_SRC-EXT_MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field QTAUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/SAPAPO/TR_E_TRQTAP_SRC-QTAUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/SAPAPO/TR_E_TRQTAP_SRC-QTAUNIT.
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_/SAPAPO/TR_E_TRQTAP_SRC_STR, 
EXT_MATNR TYPE STRING,
EXT_LOCNO TYPE STRING,
EXT_LOCTYPE TYPE STRING,
MODEL TYPE STRING,
QTDIR TYPE STRING,
VERSIOEX TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
EXT_LOCNOFR TYPE STRING,
EXT_LOCTYPEFR TYPE STRING,
VALFR_P TYPE STRING,
VALTO_P TYPE STRING,
TDSRC TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
EKORG TYPE STRING,
CONSI TYPE STRING,
SUBCO TYPE STRING,
TTYPE TYPE STRING,
METHOD TYPE STRING,
QUOTA TYPE STRING,
QTALLQTY TYPE STRING,
QTBASQTY TYPE STRING,
QTAUNIT TYPE STRING,
PENALTYL TYPE STRING,
PENALTYU TYPE STRING,
HEUID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SAPAPO/TR_E_TRQTAP_SRC_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_/SAPAPO/TR_E_TRQTAP_SRC_STR-EXT_MATNR sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-EXT_LOCNO sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-EXT_LOCTYPE sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-MODEL sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-QTDIR sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-VERSIOEX sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-VALFR sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-VALTO sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-EXT_LOCNOFR sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-EXT_LOCTYPEFR sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-VALFR_P sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-VALTO_P sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-TDSRC sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-EBELN sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-EBELP sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-EKORG sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-CONSI sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-SUBCO sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-TTYPE sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-METHOD sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-QUOTA sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-QTALLQTY sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-QTBASQTY sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-QTAUNIT sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-PENALTYL sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-PENALTYU sy-vline 
WA_/SAPAPO/TR_E_TRQTAP_SRC_STR-HEUID sy-vline      INTO ld_text SEPARATED BY SPACE.

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