ABAP Select data from SAP table TKECHACOADP_1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TKECHACOADP_1 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 TKECHACOADP_1. 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 TKECHACOADP_1 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_TKECHACOADP_1 TYPE STANDARD TABLE OF TKECHACOADP_1,
      WA_TKECHACOADP_1 TYPE TKECHACOADP_1,
      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: <TKECHACOADP_1> TYPE TKECHACOADP_1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TKECHACOADP_1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TKECHACOADP_1
  INTO TABLE IT_TKECHACOADP_1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TKECHACOADP_1
*  INTO TABLE @DATA(IT_TKECHACOADP_12).
*--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_TKECHACOADP_1 INDEX 1 INTO DATA(WA_TKECHACOADP_12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TKECHACOADP_1 ASSIGNING <TKECHACOADP_1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TKECHACOADP_1>-MANDT = 1.
<TKECHACOADP_1>-ERKRSO = 1.
<TKECHACOADP_1>-ERKRSN = 1.
<TKECHACOADP_1>-EXUSER = 1.
<TKECHACOADP_1>-EXDATE = 1.

ENDLOOP.

LOOP AT IT_TKECHACOADP_1 INTO WA_TKECHACOADP_1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TKECHACOADP_1-EXTIME, sy-vline,
  WA_TKECHACOADP_1-EXMODE, sy-vline,
  WA_TKECHACOADP_1-BIL, sy-vline,
  WA_TKECHACOADP_1-SLS, sy-vline,
  WA_TKECHACOADP_1-DEL, sy-vline,
  WA_TKECHACOADP_1-ACC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TKECHACOADP_1 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_TKECHACOADP_1 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_TKECHACOADP_1 INTO WA_TKECHACOADP_1.


*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_TKECHACOADP_1_STR, 
MANDT TYPE STRING,
ERKRSO TYPE STRING,
ERKRSN TYPE STRING,
EXUSER TYPE STRING,
EXDATE TYPE STRING,
EXTIME TYPE STRING,
EXMODE TYPE STRING,
BIL TYPE STRING,
SLS TYPE STRING,
DEL TYPE STRING,
ACC TYPE STRING,
OPA TYPE STRING,
CO TYPE STRING,
MM TYPE STRING,
PCA TYPE STRING,
MISC TYPE STRING,
EXSTATUS TYPE STRING,
PAOBJNR_MIN TYPE STRING,
PAOBJNR_MAX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TKECHACOADP_1_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_TKECHACOADP_1_STR-MANDT sy-vline 
WA_TKECHACOADP_1_STR-ERKRSO sy-vline 
WA_TKECHACOADP_1_STR-ERKRSN sy-vline 
WA_TKECHACOADP_1_STR-EXUSER sy-vline 
WA_TKECHACOADP_1_STR-EXDATE sy-vline 
WA_TKECHACOADP_1_STR-EXTIME sy-vline 
WA_TKECHACOADP_1_STR-EXMODE sy-vline 
WA_TKECHACOADP_1_STR-BIL sy-vline 
WA_TKECHACOADP_1_STR-SLS sy-vline 
WA_TKECHACOADP_1_STR-DEL sy-vline 
WA_TKECHACOADP_1_STR-ACC sy-vline 
WA_TKECHACOADP_1_STR-OPA sy-vline 
WA_TKECHACOADP_1_STR-CO sy-vline 
WA_TKECHACOADP_1_STR-MM sy-vline 
WA_TKECHACOADP_1_STR-PCA sy-vline 
WA_TKECHACOADP_1_STR-MISC sy-vline 
WA_TKECHACOADP_1_STR-EXSTATUS sy-vline 
WA_TKECHACOADP_1_STR-PAOBJNR_MIN sy-vline 
WA_TKECHACOADP_1_STR-PAOBJNR_MAX sy-vline      INTO ld_text SEPARATED BY SPACE.

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