ABAP Select data from SAP table T5AB1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T5AB1 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 T5AB1. 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 T5AB1 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_T5AB1 TYPE STANDARD TABLE OF T5AB1,
      WA_T5AB1 TYPE T5AB1,
      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: <T5AB1> TYPE T5AB1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T5AB1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T5AB1
  INTO TABLE IT_T5AB1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T5AB1
*  INTO TABLE @DATA(IT_T5AB12).
*--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_T5AB1 INDEX 1 INTO DATA(WA_T5AB12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T5AB1 ASSIGNING <T5AB1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T5AB1>-MANDT = 1.
<T5AB1>-TEMSE_NAME = 1.
<T5AB1>-LFDNR = 1.
<T5AB1>-PERNR = 1.
<T5AB1>-NACHN = 1.

ENDLOOP.

LOOP AT IT_T5AB1 INTO WA_T5AB1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T5AB1-VORNA, sy-vline,
  WA_T5AB1-GUID_KM, sy-vline,
  WA_T5AB1-GUID_KG, sy-vline,
  WA_T5AB1-UNAME, sy-vline,
  WA_T5AB1-STATUS_PERSNO, sy-vline,
  WA_T5AB1-STATUS_KONS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T5AB1 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_T5AB1 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_T5AB1 INTO WA_T5AB1.


*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_T5AB1_STR, 
MANDT TYPE STRING,
TEMSE_NAME TYPE STRING,
LFDNR TYPE STRING,
PERNR TYPE STRING,
NACHN TYPE STRING,
VORNA TYPE STRING,
GUID_KM TYPE STRING,
GUID_KG TYPE STRING,
UNAME TYPE STRING,
STATUS_PERSNO TYPE STRING,
STATUS_KONS TYPE STRING,
DGNR0 TYPE STRING,
DGNA0 TYPE STRING,
AUSVL TYPE STRING,
AUSVG TYPE STRING,
MART0 TYPE STRING,
VSTD0 TYPE STRING,
ANSP0 TYPE STRING,
AUAB0 TYPE STRING,
AUBI0 TYPE STRING,
FORT0 TYPE STRING,
GRUN0 TYPE STRING,
ANZB0 TYPE STRING,
SANR0 TYPE STRING,
KGA10 TYPE STRING,
KGB10 TYPE STRING,
KGZ10 TYPE STRING,
KGA20 TYPE STRING,
KGB20 TYPE STRING,
KGZ20 TYPE STRING,
KGA30 TYPE STRING,
KGB30 TYPE STRING,
KGZ30 TYPE STRING,
AFME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T5AB1_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_T5AB1_STR-MANDT sy-vline 
WA_T5AB1_STR-TEMSE_NAME sy-vline 
WA_T5AB1_STR-LFDNR sy-vline 
WA_T5AB1_STR-PERNR sy-vline 
WA_T5AB1_STR-NACHN sy-vline 
WA_T5AB1_STR-VORNA sy-vline 
WA_T5AB1_STR-GUID_KM sy-vline 
WA_T5AB1_STR-GUID_KG sy-vline 
WA_T5AB1_STR-UNAME sy-vline 
WA_T5AB1_STR-STATUS_PERSNO sy-vline 
WA_T5AB1_STR-STATUS_KONS sy-vline 
WA_T5AB1_STR-DGNR0 sy-vline 
WA_T5AB1_STR-DGNA0 sy-vline 
WA_T5AB1_STR-AUSVL sy-vline 
WA_T5AB1_STR-AUSVG sy-vline 
WA_T5AB1_STR-MART0 sy-vline 
WA_T5AB1_STR-VSTD0 sy-vline 
WA_T5AB1_STR-ANSP0 sy-vline 
WA_T5AB1_STR-AUAB0 sy-vline 
WA_T5AB1_STR-AUBI0 sy-vline 
WA_T5AB1_STR-FORT0 sy-vline 
WA_T5AB1_STR-GRUN0 sy-vline 
WA_T5AB1_STR-ANZB0 sy-vline 
WA_T5AB1_STR-SANR0 sy-vline 
WA_T5AB1_STR-KGA10 sy-vline 
WA_T5AB1_STR-KGB10 sy-vline 
WA_T5AB1_STR-KGZ10 sy-vline 
WA_T5AB1_STR-KGA20 sy-vline 
WA_T5AB1_STR-KGB20 sy-vline 
WA_T5AB1_STR-KGZ20 sy-vline 
WA_T5AB1_STR-KGA30 sy-vline 
WA_T5AB1_STR-KGB30 sy-vline 
WA_T5AB1_STR-KGZ30 sy-vline 
WA_T5AB1_STR-AFME sy-vline      INTO ld_text SEPARATED BY SPACE.

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