ABAP Select data from SAP table BLOCK_ZTART into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM BLOCK_ZTART
*  INTO TABLE @DATA(IT_BLOCK_ZTART2).
*--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_BLOCK_ZTART INDEX 1 INTO DATA(WA_BLOCK_ZTART2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<BLOCK_ZTART>-MOBDE0 = 1.
<BLOCK_ZTART>-ZTART0 = 1.
<BLOCK_ZTART>-MOBDE1 = 1.
<BLOCK_ZTART>-ZTART1 = 1.
<BLOCK_ZTART>-MOBDE2 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_BLOCK_ZTART-ZTART2, sy-vline,
  WA_BLOCK_ZTART-MOBDE3, sy-vline,
  WA_BLOCK_ZTART-ZTART3, sy-vline,
  WA_BLOCK_ZTART-MOBDE4, sy-vline,
  WA_BLOCK_ZTART-ZTART4, sy-vline,
  WA_BLOCK_ZTART-MOBDE5, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_BLOCK_ZTART 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_BLOCK_ZTART 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_BLOCK_ZTART INTO WA_BLOCK_ZTART.


*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_BLOCK_ZTART_STR, 
MOBDE0 TYPE STRING,
ZTART0 TYPE STRING,
MOBDE1 TYPE STRING,
ZTART1 TYPE STRING,
MOBDE2 TYPE STRING,
ZTART2 TYPE STRING,
MOBDE3 TYPE STRING,
ZTART3 TYPE STRING,
MOBDE4 TYPE STRING,
ZTART4 TYPE STRING,
MOBDE5 TYPE STRING,
ZTART5 TYPE STRING,
MOBDE6 TYPE STRING,
ZTART6 TYPE STRING,
MOBDE7 TYPE STRING,
ZTART7 TYPE STRING,
MOBDE8 TYPE STRING,
ZTART8 TYPE STRING,
MOBDE9 TYPE STRING,
ZTART9 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_BLOCK_ZTART_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_BLOCK_ZTART_STR-MOBDE0 sy-vline 
WA_BLOCK_ZTART_STR-ZTART0 sy-vline 
WA_BLOCK_ZTART_STR-MOBDE1 sy-vline 
WA_BLOCK_ZTART_STR-ZTART1 sy-vline 
WA_BLOCK_ZTART_STR-MOBDE2 sy-vline 
WA_BLOCK_ZTART_STR-ZTART2 sy-vline 
WA_BLOCK_ZTART_STR-MOBDE3 sy-vline 
WA_BLOCK_ZTART_STR-ZTART3 sy-vline 
WA_BLOCK_ZTART_STR-MOBDE4 sy-vline 
WA_BLOCK_ZTART_STR-ZTART4 sy-vline 
WA_BLOCK_ZTART_STR-MOBDE5 sy-vline 
WA_BLOCK_ZTART_STR-ZTART5 sy-vline 
WA_BLOCK_ZTART_STR-MOBDE6 sy-vline 
WA_BLOCK_ZTART_STR-ZTART6 sy-vline 
WA_BLOCK_ZTART_STR-MOBDE7 sy-vline 
WA_BLOCK_ZTART_STR-ZTART7 sy-vline 
WA_BLOCK_ZTART_STR-MOBDE8 sy-vline 
WA_BLOCK_ZTART_STR-ZTART8 sy-vline 
WA_BLOCK_ZTART_STR-MOBDE9 sy-vline 
WA_BLOCK_ZTART_STR-ZTART9 sy-vline      INTO ld_text SEPARATED BY SPACE.

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