ABAP Select data from SAP table BAPIP0021SG into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP BAPIP0021SG 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 BAPIP0021SG. 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 BAPIP0021SG 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_BAPIP0021SG TYPE STANDARD TABLE OF BAPIP0021SG,
      WA_BAPIP0021SG TYPE BAPIP0021SG,
      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: <BAPIP0021SG> TYPE BAPIP0021SG.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_BAPIP0021SG.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM BAPIP0021SG
  INTO TABLE IT_BAPIP0021SG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BAPIP0021SG
*  INTO TABLE @DATA(IT_BAPIP0021SG2).
*--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_BAPIP0021SG INDEX 1 INTO DATA(WA_BAPIP0021SG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_BAPIP0021SG ASSIGNING <BAPIP0021SG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BAPIP0021SG>-EMPLOYEENO = 1.
<BAPIP0021SG>-SUBTYPE = 1.
<BAPIP0021SG>-OBJECTID = 1.
<BAPIP0021SG>-LOCKINDIC = 1.
<BAPIP0021SG>-VALIDEND = 1.

ENDLOOP.

LOOP AT IT_BAPIP0021SG INTO WA_BAPIP0021SG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BAPIP0021SG-VALIDBEGIN, sy-vline,
  WA_BAPIP0021SG-RECORDNR, sy-vline,
  WA_BAPIP0021SG-MEMBERTYPE, sy-vline,
  WA_BAPIP0021SG-LASTNAME, sy-vline,
  WA_BAPIP0021SG-FIRSTNAME, sy-vline,
  WA_BAPIP0021SG-MAIDENNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BAPIP0021SG 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_BAPIP0021SG 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_BAPIP0021SG INTO WA_BAPIP0021SG.


*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 PDATE, internal->external for field DATEOFBIRTH
CALL FUNCTION 'CONVERSION_EXIT_PDATE_OUTPUT'
  EXPORTING
    input =                      WA_BAPIP0021SG-DATEOFBIRTH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_BAPIP0021SG-DATEOFBIRTH.
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_BAPIP0021SG_STR, 
EMPLOYEENO TYPE STRING,
SUBTYPE TYPE STRING,
OBJECTID TYPE STRING,
LOCKINDIC TYPE STRING,
VALIDEND TYPE STRING,
VALIDBEGIN TYPE STRING,
RECORDNR TYPE STRING,
MEMBERTYPE TYPE STRING,
LASTNAME TYPE STRING,
FIRSTNAME TYPE STRING,
MAIDENNAME TYPE STRING,
GENDER TYPE STRING,
DATEOFBIRTH TYPE STRING,
NATIONALITY TYPE STRING,
NAMEOFSUBTYPE TYPE STRING,
NAMEOFGENDER TYPE STRING,
NAMEOFNATIO TYPE STRING,
IDNUMBER TYPE STRING,
RESIDENCY_TYPE TYPE STRING,
TAXID TYPE STRING,
ETHNIC_ORIGIN TYPE STRING,
EMP_STATUS TYPE STRING,
MEM_ER_STRT TYPE STRING,
MEM_ER_2NDSTRT TYPE STRING,
MEM_ER_CITY TYPE STRING,
MEM_ER_PSTCD TYPE STRING,
MEM_STRT TYPE STRING,
MEM_2NDSTRT TYPE STRING,
MEM_CITY TYPE STRING,
MEM_PSTCD TYPE STRING,
MEM_COUNTRY TYPE STRING,
MEM_NAMEOFCNTY TYPE STRING,
MEM_PHONENUM TYPE STRING,
EMPLOYERNAME TYPE STRING,
DESIGNATION TYPE STRING,
SCHOOLNAME TYPE STRING,
CONFINEMENT_NO TYPE STRING,
CERTIFICATE_NO TYPE STRING,
CHILD_TYPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BAPIP0021SG_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_BAPIP0021SG_STR-EMPLOYEENO sy-vline 
WA_BAPIP0021SG_STR-SUBTYPE sy-vline 
WA_BAPIP0021SG_STR-OBJECTID sy-vline 
WA_BAPIP0021SG_STR-LOCKINDIC sy-vline 
WA_BAPIP0021SG_STR-VALIDEND sy-vline 
WA_BAPIP0021SG_STR-VALIDBEGIN sy-vline 
WA_BAPIP0021SG_STR-RECORDNR sy-vline 
WA_BAPIP0021SG_STR-MEMBERTYPE sy-vline 
WA_BAPIP0021SG_STR-LASTNAME sy-vline 
WA_BAPIP0021SG_STR-FIRSTNAME sy-vline 
WA_BAPIP0021SG_STR-MAIDENNAME sy-vline 
WA_BAPIP0021SG_STR-GENDER sy-vline 
WA_BAPIP0021SG_STR-DATEOFBIRTH sy-vline 
WA_BAPIP0021SG_STR-NATIONALITY sy-vline 
WA_BAPIP0021SG_STR-NAMEOFSUBTYPE sy-vline 
WA_BAPIP0021SG_STR-NAMEOFGENDER sy-vline 
WA_BAPIP0021SG_STR-NAMEOFNATIO sy-vline 
WA_BAPIP0021SG_STR-IDNUMBER sy-vline 
WA_BAPIP0021SG_STR-RESIDENCY_TYPE sy-vline 
WA_BAPIP0021SG_STR-TAXID sy-vline 
WA_BAPIP0021SG_STR-ETHNIC_ORIGIN sy-vline 
WA_BAPIP0021SG_STR-EMP_STATUS sy-vline 
WA_BAPIP0021SG_STR-MEM_ER_STRT sy-vline 
WA_BAPIP0021SG_STR-MEM_ER_2NDSTRT sy-vline 
WA_BAPIP0021SG_STR-MEM_ER_CITY sy-vline 
WA_BAPIP0021SG_STR-MEM_ER_PSTCD sy-vline 
WA_BAPIP0021SG_STR-MEM_STRT sy-vline 
WA_BAPIP0021SG_STR-MEM_2NDSTRT sy-vline 
WA_BAPIP0021SG_STR-MEM_CITY sy-vline 
WA_BAPIP0021SG_STR-MEM_PSTCD sy-vline 
WA_BAPIP0021SG_STR-MEM_COUNTRY sy-vline 
WA_BAPIP0021SG_STR-MEM_NAMEOFCNTY sy-vline 
WA_BAPIP0021SG_STR-MEM_PHONENUM sy-vline 
WA_BAPIP0021SG_STR-EMPLOYERNAME sy-vline 
WA_BAPIP0021SG_STR-DESIGNATION sy-vline 
WA_BAPIP0021SG_STR-SCHOOLNAME sy-vline 
WA_BAPIP0021SG_STR-CONFINEMENT_NO sy-vline 
WA_BAPIP0021SG_STR-CERTIFICATE_NO sy-vline 
WA_BAPIP0021SG_STR-CHILD_TYPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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