ABAP Select data from SAP table T5CAG into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T5CAG 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 T5CAG. 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 T5CAG 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_T5CAG TYPE STANDARD TABLE OF T5CAG,
      WA_T5CAG TYPE T5CAG,
      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: <T5CAG> TYPE T5CAG.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T5CAG.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T5CAG
  INTO TABLE IT_T5CAG.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T5CAG
*  INTO TABLE @DATA(IT_T5CAG2).
*--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_T5CAG INDEX 1 INTO DATA(WA_T5CAG2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T5CAG ASSIGNING <T5CAG>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T5CAG>-MANDT = 1.
<T5CAG>-MOLGA = 1.
<T5CAG>-APPLI = 1.
<T5CAG>-PPLAN = 1.
<T5CAG>-VALTY = 1.

ENDLOOP.

LOOP AT IT_T5CAG INTO WA_T5CAG.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T5CAG-METHD, sy-vline,
  WA_T5CAG-EGMTD, sy-vline,
  WA_T5CAG-MTVAR, sy-vline,
  WA_T5CAG-NLINE, sy-vline,
  WA_T5CAG-LINTY, sy-vline,
  WA_T5CAG-OPERA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T5CAG 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_T5CAG 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_T5CAG INTO WA_T5CAG.


*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_T5CAG_STR, 
MANDT TYPE STRING,
MOLGA TYPE STRING,
APPLI TYPE STRING,
PPLAN TYPE STRING,
VALTY TYPE STRING,
METHD TYPE STRING,
EGMTD TYPE STRING,
MTVAR TYPE STRING,
NLINE TYPE STRING,
LINTY TYPE STRING,
OPERA TYPE STRING,
VTY01 TYPE STRING,
PAR01 TYPE STRING,
VTY02 TYPE STRING,
PAR02 TYPE STRING,
VTY03 TYPE STRING,
PAR03 TYPE STRING,
VTY04 TYPE STRING,
PAR04 TYPE STRING,
VTY05 TYPE STRING,
PAR05 TYPE STRING,
VTY06 TYPE STRING,
PAR06 TYPE STRING,
VTY07 TYPE STRING,
PAR07 TYPE STRING,
VTY08 TYPE STRING,
PAR08 TYPE STRING,
VTY09 TYPE STRING,
PAR09 TYPE STRING,
VTY10 TYPE STRING,
PAR10 TYPE STRING,
EOLP0 TYPE STRING,
EOLA0 TYPE STRING,
EOLP1 TYPE STRING,
EOLA1 TYPE STRING,
EOLP2 TYPE STRING,
EOLA2 TYPE STRING,
EOLP3 TYPE STRING,
EOLA3 TYPE STRING,
EOLP4 TYPE STRING,
EOLA4 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T5CAG_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_T5CAG_STR-MANDT sy-vline 
WA_T5CAG_STR-MOLGA sy-vline 
WA_T5CAG_STR-APPLI sy-vline 
WA_T5CAG_STR-PPLAN sy-vline 
WA_T5CAG_STR-VALTY sy-vline 
WA_T5CAG_STR-METHD sy-vline 
WA_T5CAG_STR-EGMTD sy-vline 
WA_T5CAG_STR-MTVAR sy-vline 
WA_T5CAG_STR-NLINE sy-vline 
WA_T5CAG_STR-LINTY sy-vline 
WA_T5CAG_STR-OPERA sy-vline 
WA_T5CAG_STR-VTY01 sy-vline 
WA_T5CAG_STR-PAR01 sy-vline 
WA_T5CAG_STR-VTY02 sy-vline 
WA_T5CAG_STR-PAR02 sy-vline 
WA_T5CAG_STR-VTY03 sy-vline 
WA_T5CAG_STR-PAR03 sy-vline 
WA_T5CAG_STR-VTY04 sy-vline 
WA_T5CAG_STR-PAR04 sy-vline 
WA_T5CAG_STR-VTY05 sy-vline 
WA_T5CAG_STR-PAR05 sy-vline 
WA_T5CAG_STR-VTY06 sy-vline 
WA_T5CAG_STR-PAR06 sy-vline 
WA_T5CAG_STR-VTY07 sy-vline 
WA_T5CAG_STR-PAR07 sy-vline 
WA_T5CAG_STR-VTY08 sy-vline 
WA_T5CAG_STR-PAR08 sy-vline 
WA_T5CAG_STR-VTY09 sy-vline 
WA_T5CAG_STR-PAR09 sy-vline 
WA_T5CAG_STR-VTY10 sy-vline 
WA_T5CAG_STR-PAR10 sy-vline 
WA_T5CAG_STR-EOLP0 sy-vline 
WA_T5CAG_STR-EOLA0 sy-vline 
WA_T5CAG_STR-EOLP1 sy-vline 
WA_T5CAG_STR-EOLA1 sy-vline 
WA_T5CAG_STR-EOLP2 sy-vline 
WA_T5CAG_STR-EOLA2 sy-vline 
WA_T5CAG_STR-EOLP3 sy-vline 
WA_T5CAG_STR-EOLA3 sy-vline 
WA_T5CAG_STR-EOLP4 sy-vline 
WA_T5CAG_STR-EOLA4 sy-vline      INTO ld_text SEPARATED BY SPACE.

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