ABAP Select data from SAP table BAPIMEREQSOURCE into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPIMEREQSOURCE 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 BAPIMEREQSOURCE. 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 BAPIMEREQSOURCE 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_BAPIMEREQSOURCE TYPE STANDARD TABLE OF BAPIMEREQSOURCE,
      WA_BAPIMEREQSOURCE TYPE BAPIMEREQSOURCE,
      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: <BAPIMEREQSOURCE> TYPE BAPIMEREQSOURCE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPIMEREQSOURCE
*  INTO TABLE @DATA(IT_BAPIMEREQSOURCE2).
*--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_BAPIMEREQSOURCE INDEX 1 INTO DATA(WA_BAPIMEREQSOURCE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPIMEREQSOURCE>-PREQ_ITEM = 1.
<BAPIMEREQSOURCE>-QUOTA_ARR = 1.
<BAPIMEREQSOURCE>-QUOTARRITM = 1.
<BAPIMEREQSOURCE>-DOC_CAT = 1.
<BAPIMEREQSOURCE>-DES_VENDOR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPIMEREQSOURCE-FIXED_VEND, sy-vline,
  WA_BAPIMEREQSOURCE-PURCH_ORG, sy-vline,
  WA_BAPIMEREQSOURCE-AGREEMENT, sy-vline,
  WA_BAPIMEREQSOURCE-AGMT_ITEM, sy-vline,
  WA_BAPIMEREQSOURCE-INFO_REC, sy-vline,
  WA_BAPIMEREQSOURCE-SUPPL_PLNT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPIMEREQSOURCE 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_BAPIMEREQSOURCE 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_BAPIMEREQSOURCE INTO WA_BAPIMEREQSOURCE.


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

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

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

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

*Conversion exit ALPHA, internal->external for field INFO_REC
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_BAPIMEREQSOURCE-INFO_REC
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIMEREQSOURCE-INFO_REC.
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_BAPIMEREQSOURCE_STR, 
PREQ_ITEM TYPE STRING,
QUOTA_ARR TYPE STRING,
QUOTARRITM TYPE STRING,
DOC_CAT TYPE STRING,
DES_VENDOR TYPE STRING,
FIXED_VEND TYPE STRING,
PURCH_ORG TYPE STRING,
AGREEMENT TYPE STRING,
AGMT_ITEM TYPE STRING,
INFO_REC TYPE STRING,
SUPPL_PLNT TYPE STRING,
PROCURING_PLANT TYPE STRING,
SUPPL_STLOC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPIMEREQSOURCE_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_BAPIMEREQSOURCE_STR-PREQ_ITEM sy-vline 
WA_BAPIMEREQSOURCE_STR-QUOTA_ARR sy-vline 
WA_BAPIMEREQSOURCE_STR-QUOTARRITM sy-vline 
WA_BAPIMEREQSOURCE_STR-DOC_CAT sy-vline 
WA_BAPIMEREQSOURCE_STR-DES_VENDOR sy-vline 
WA_BAPIMEREQSOURCE_STR-FIXED_VEND sy-vline 
WA_BAPIMEREQSOURCE_STR-PURCH_ORG sy-vline 
WA_BAPIMEREQSOURCE_STR-AGREEMENT sy-vline 
WA_BAPIMEREQSOURCE_STR-AGMT_ITEM sy-vline 
WA_BAPIMEREQSOURCE_STR-INFO_REC sy-vline 
WA_BAPIMEREQSOURCE_STR-SUPPL_PLNT sy-vline 
WA_BAPIMEREQSOURCE_STR-PROCURING_PLANT sy-vline 
WA_BAPIMEREQSOURCE_STR-SUPPL_STLOC sy-vline      INTO ld_text SEPARATED BY SPACE.

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