ABAP Select data from SAP table /BA1/F4_STR_VOLA_MAPIPARA into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /BA1/F4_STR_VOLA_MAPIPARA 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 /BA1/F4_STR_VOLA_MAPIPARA. 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 /BA1/F4_STR_VOLA_MAPIPARA 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_/BA1/F4_STR_VOLA_MAPIPARA TYPE STANDARD TABLE OF /BA1/F4_STR_VOLA_MAPIPARA,
      WA_/BA1/F4_STR_VOLA_MAPIPARA TYPE /BA1/F4_STR_VOLA_MAPIPARA,
      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: </BA1/F4_STR_VOLA_MAPIPARA> TYPE /BA1/F4_STR_VOLA_MAPIPARA.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/BA1/F4_STR_VOLA_MAPIPARA.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /BA1/F4_STR_VOLA_MAPIPARA
  INTO TABLE IT_/BA1/F4_STR_VOLA_MAPIPARA.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /BA1/F4_STR_VOLA_MAPIPARA
*  INTO TABLE @DATA(IT_/BA1/F4_STR_VOLA_MAPIPARA2).
*--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_/BA1/F4_STR_VOLA_MAPIPARA INDEX 1 INTO DATA(WA_/BA1/F4_STR_VOLA_MAPIPARA2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/BA1/F4_STR_VOLA_MAPIPARA ASSIGNING </BA1/F4_STR_VOLA_MAPIPARA>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</BA1/F4_STR_VOLA_MAPIPARA>-MDCODE = 1.
</BA1/F4_STR_VOLA_MAPIPARA>-VOLTYPE = 1.
</BA1/F4_STR_VOLA_MAPIPARA>-EXTNOOPTTION = 1.
</BA1/F4_STR_VOLA_MAPIPARA>-EXTPRODTYPEOPTION = 1.
</BA1/F4_STR_VOLA_MAPIPARA>-VALIDDATE = 1.

ENDLOOP.

LOOP AT IT_/BA1/F4_STR_VOLA_MAPIPARA INTO WA_/BA1/F4_STR_VOLA_MAPIPARA.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/BA1/F4_STR_VOLA_MAPIPARA-VALIDFROM, sy-vline,
  WA_/BA1/F4_STR_VOLA_MAPIPARA-VALIDTO, sy-vline,
  WA_/BA1/F4_STR_VOLA_MAPIPARA-SYSTIME, sy-vline,
  WA_/BA1/F4_STR_VOLA_MAPIPARA-STATUS, sy-vline,
  WA_/BA1/F4_STR_VOLA_MAPIPARA-TESTRUN, sy-vline,
  WA_/BA1/F4_STR_VOLA_MAPIPARA-CORRECTIONSERVERACTIV, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/BA1/F4_STR_VOLA_MAPIPARA 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_/BA1/F4_STR_VOLA_MAPIPARA 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_/BA1/F4_STR_VOLA_MAPIPARA INTO WA_/BA1/F4_STR_VOLA_MAPIPARA.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/BA1/F4_STR_VOLA_MAPIPARA_STR, 
MDCODE TYPE STRING,
VOLTYPE TYPE STRING,
EXTNOOPTTION TYPE STRING,
EXTPRODTYPEOPTION TYPE STRING,
VALIDDATE TYPE STRING,
VALIDFROM TYPE STRING,
VALIDTO TYPE STRING,
SYSTIME TYPE STRING,
STATUS TYPE STRING,
TESTRUN TYPE STRING,
CORRECTIONSERVERACTIV TYPE STRING,
FROMCCY TYPE STRING,
TOCCY TYPE STRING,
REFRATE TYPE STRING,
EXTNOUNDERLYING TYPE STRING,
EXTPRODTYPEUNDERLYING TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/BA1/F4_STR_VOLA_MAPIPARA_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_/BA1/F4_STR_VOLA_MAPIPARA_STR-MDCODE sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-VOLTYPE sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-EXTNOOPTTION sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-EXTPRODTYPEOPTION sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-VALIDDATE sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-VALIDFROM sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-VALIDTO sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-SYSTIME sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-STATUS sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-TESTRUN sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-CORRECTIONSERVERACTIV sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-FROMCCY sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-TOCCY sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-REFRATE sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-EXTNOUNDERLYING sy-vline 
WA_/BA1/F4_STR_VOLA_MAPIPARA_STR-EXTPRODTYPEUNDERLYING sy-vline      INTO ld_text SEPARATED BY SPACE.

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