ABAP Select data from SAP table ANLBZAX into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ANLBZAX
*  INTO TABLE @DATA(IT_ANLBZAX2).
*--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_ANLBZAX INDEX 1 INTO DATA(WA_ANLBZAX2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ANLBZAX>-MANDT = 1.
<ANLBZAX>-BUKRS = 1.
<ANLBZAX>-ANLN1 = 1.
<ANLBZAX>-ANLN2 = 1.
<ANLBZAX>-AFABE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ANLBZAX-BDATU, sy-vline,
  WA_ANLBZAX-ADATU, sy-vline,
  WA_ANLBZAX-AFASL, sy-vline,
  WA_ANLBZAX-NDJAR, sy-vline,
  WA_ANLBZAX-NDPER, sy-vline,
  WA_ANLBZAX-APROP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ANLBZAX 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_ANLBZAX 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_ANLBZAX INTO WA_ANLBZAX.


*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_ANLBZAX_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
AFABE TYPE STRING,
BDATU TYPE STRING,
ADATU TYPE STRING,
AFASL TYPE STRING,
NDJAR TYPE STRING,
NDPER TYPE STRING,
APROP TYPE STRING,
SCHRW TYPE STRING,
SCHRW_PROZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ANLBZAX_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_ANLBZAX_STR-MANDT sy-vline 
WA_ANLBZAX_STR-BUKRS sy-vline 
WA_ANLBZAX_STR-ANLN1 sy-vline 
WA_ANLBZAX_STR-ANLN2 sy-vline 
WA_ANLBZAX_STR-AFABE sy-vline 
WA_ANLBZAX_STR-BDATU sy-vline 
WA_ANLBZAX_STR-ADATU sy-vline 
WA_ANLBZAX_STR-AFASL sy-vline 
WA_ANLBZAX_STR-NDJAR sy-vline 
WA_ANLBZAX_STR-NDPER sy-vline 
WA_ANLBZAX_STR-APROP sy-vline 
WA_ANLBZAX_STR-SCHRW sy-vline 
WA_ANLBZAX_STR-SCHRW_PROZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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