ABAP Select data from SAP table /FLDQ/MDG_BP_CENTRL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /FLDQ/MDG_BP_CENTRL
*  INTO TABLE @DATA(IT_/FLDQ/MDG_BP_CENTRL2).
*--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_/FLDQ/MDG_BP_CENTRL INDEX 1 INTO DATA(WA_/FLDQ/MDG_BP_CENTRL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</FLDQ/MDG_BP_CENTRL>-BP_HEADER = 1.
</FLDQ/MDG_BP_CENTRL>-REF_CENTR = 1.
</FLDQ/MDG_BP_CENTRL>-REFCENTRL = 1.
</FLDQ/MDG_BP_CENTRL>-BPEXT = 1.
</FLDQ/MDG_BP_CENTRL>-BPKIND = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/FLDQ/MDG_BP_CENTRL-BU_LANGU, sy-vline,
  WA_/FLDQ/MDG_BP_CENTRL-GENDER, sy-vline,
  WA_/FLDQ/MDG_BP_CENTRL-LEGAL_ORG, sy-vline,
  WA_/FLDQ/MDG_BP_CENTRL-LGAL_ENTY, sy-vline,
  WA_/FLDQ/MDG_BP_CENTRL-LNGU_CORR, sy-vline,
  WA_/FLDQ/MDG_BP_CENTRL-NAME_GRP1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/FLDQ/MDG_BP_CENTRL 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_/FLDQ/MDG_BP_CENTRL 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_/FLDQ/MDG_BP_CENTRL INTO WA_/FLDQ/MDG_BP_CENTRL.


*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 BP_HEADER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/FLDQ/MDG_BP_CENTRL-BP_HEADER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/FLDQ/MDG_BP_CENTRL-BP_HEADER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field BU_LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/FLDQ/MDG_BP_CENTRL-BU_LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/FLDQ/MDG_BP_CENTRL-BU_LANGU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field LNGU_CORR
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_/FLDQ/MDG_BP_CENTRL-LNGU_CORR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/FLDQ/MDG_BP_CENTRL-LNGU_CORR.
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_/FLDQ/MDG_BP_CENTRL_STR, 
BP_HEADER TYPE STRING,
REF_CENTR TYPE STRING,
REFCENTRL TYPE STRING,
BPEXT TYPE STRING,
BPKIND TYPE STRING,
BU_LANGU TYPE STRING,
GENDER TYPE STRING,
LEGAL_ORG TYPE STRING,
LGAL_ENTY TYPE STRING,
LNGU_CORR TYPE STRING,
NAME_GRP1 TYPE STRING,
NAME_GRP2 TYPE STRING,
NAME_LAST TYPE STRING,
NAME_LST2 TYPE STRING,
NAME_ORG1 TYPE STRING,
NAME_ORG2 TYPE STRING,
NAME_ORG3 TYPE STRING,
NAME_ORG4 TYPE STRING,
NAM_FIRST TYPE STRING,
NAM_LAST2 TYPE STRING,
NANMIDDLE TYPE STRING,
NATIO TYPE STRING,
NATPERS TYPE STRING,
NICK_NAME TYPE STRING,
NME1_TEXT TYPE STRING,
TITLE_BP TYPE STRING,
TITLE_LET TYPE STRING,
TTLE_ACA1 TYPE STRING,
TTLE_ACA2 TYPE STRING,
TTLE_ROYL TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/FLDQ/MDG_BP_CENTRL_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_/FLDQ/MDG_BP_CENTRL_STR-BP_HEADER sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-REF_CENTR sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-REFCENTRL sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-BPEXT sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-BPKIND sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-BU_LANGU sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-GENDER sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-LEGAL_ORG sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-LGAL_ENTY sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-LNGU_CORR sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NAME_GRP1 sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NAME_GRP2 sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NAME_LAST sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NAME_LST2 sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NAME_ORG1 sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NAME_ORG2 sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NAME_ORG3 sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NAME_ORG4 sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NAM_FIRST sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NAM_LAST2 sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NANMIDDLE sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NATIO sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NATPERS sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NICK_NAME sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-NME1_TEXT sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-TITLE_BP sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-TITLE_LET sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-TTLE_ACA1 sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-TTLE_ACA2 sy-vline 
WA_/FLDQ/MDG_BP_CENTRL_STR-TTLE_ROYL sy-vline      INTO ld_text SEPARATED BY SPACE.

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