ABAP Select data from SAP table KNA1BRAZIL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP KNA1BRAZIL 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 KNA1BRAZIL. 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 KNA1BRAZIL 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_KNA1BRAZIL TYPE STANDARD TABLE OF KNA1BRAZIL,
      WA_KNA1BRAZIL TYPE KNA1BRAZIL,
      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: <KNA1BRAZIL> TYPE KNA1BRAZIL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_KNA1BRAZIL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM KNA1BRAZIL
  INTO TABLE IT_KNA1BRAZIL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KNA1BRAZIL
*  INTO TABLE @DATA(IT_KNA1BRAZIL2).
*--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_KNA1BRAZIL INDEX 1 INTO DATA(WA_KNA1BRAZIL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_KNA1BRAZIL ASSIGNING <KNA1BRAZIL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KNA1BRAZIL>-SUFRAMA = 1.
<KNA1BRAZIL>-RG = 1.
<KNA1BRAZIL>-EXP = 1.
<KNA1BRAZIL>-UF = 1.
<KNA1BRAZIL>-RGDATE = 1.

ENDLOOP.

LOOP AT IT_KNA1BRAZIL INTO WA_KNA1BRAZIL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KNA1BRAZIL-RIC, sy-vline,
  WA_KNA1BRAZIL-RNE, sy-vline,
  WA_KNA1BRAZIL-RNEDATE, sy-vline,
  WA_KNA1BRAZIL-CNAE, sy-vline,
  WA_KNA1BRAZIL-LEGALNAT, sy-vline,
  WA_KNA1BRAZIL-CRTN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KNA1BRAZIL 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_KNA1BRAZIL 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_KNA1BRAZIL INTO WA_KNA1BRAZIL.


*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_KNA1BRAZIL_STR, 
SUFRAMA TYPE STRING,
RG TYPE STRING,
EXP TYPE STRING,
UF TYPE STRING,
RGDATE TYPE STRING,
RIC TYPE STRING,
RNE TYPE STRING,
RNEDATE TYPE STRING,
CNAE TYPE STRING,
LEGALNAT TYPE STRING,
CRTN TYPE STRING,
ICMSTAXPAY TYPE STRING,
INDTYP TYPE STRING,
TDT TYPE STRING,
COMSIZE TYPE STRING,
DECREGPC TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KNA1BRAZIL_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_KNA1BRAZIL_STR-SUFRAMA sy-vline 
WA_KNA1BRAZIL_STR-RG sy-vline 
WA_KNA1BRAZIL_STR-EXP sy-vline 
WA_KNA1BRAZIL_STR-UF sy-vline 
WA_KNA1BRAZIL_STR-RGDATE sy-vline 
WA_KNA1BRAZIL_STR-RIC sy-vline 
WA_KNA1BRAZIL_STR-RNE sy-vline 
WA_KNA1BRAZIL_STR-RNEDATE sy-vline 
WA_KNA1BRAZIL_STR-CNAE sy-vline 
WA_KNA1BRAZIL_STR-LEGALNAT sy-vline 
WA_KNA1BRAZIL_STR-CRTN sy-vline 
WA_KNA1BRAZIL_STR-ICMSTAXPAY sy-vline 
WA_KNA1BRAZIL_STR-INDTYP sy-vline 
WA_KNA1BRAZIL_STR-TDT sy-vline 
WA_KNA1BRAZIL_STR-COMSIZE sy-vline 
WA_KNA1BRAZIL_STR-DECREGPC sy-vline      INTO ld_text SEPARATED BY SPACE.

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