ABAP Select data from SAP table TJHAB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TJHAB
*  INTO TABLE @DATA(IT_TJHAB2).
*--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_TJHAB INDEX 1 INTO DATA(WA_TJHAB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TJHAB>-MANDT = 1.
<TJHAB>-VKORG = 1.
<TJHAB>-VTWEG = 1.
<TJHAB>-SPART = 1.
<TJHAB>-POS_ART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TJHAB-BEZKONDPR1, sy-vline,
  WA_TJHAB-DEDOKU_PR1, sy-vline,
  WA_TJHAB-BEZKONDPR2, sy-vline,
  WA_TJHAB-DEDOKU_PR2, sy-vline,
  WA_TJHAB-BEZKONDPR3, sy-vline,
  WA_TJHAB-DEDOKU_PR3, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TJHAB 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_TJHAB 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_TJHAB INTO WA_TJHAB.


*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.

*Conversion exit ALPHA, internal->external for field BEZKONDPR1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAB-BEZKONDPR1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAB-BEZKONDPR1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BEZKONDPR2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAB-BEZKONDPR2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAB-BEZKONDPR2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BEZKONDPR3
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAB-BEZKONDPR3
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAB-BEZKONDPR3.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BEZKONDPR4
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAB-BEZKONDPR4
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAB-BEZKONDPR4.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BEZKONDPR5
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAB-BEZKONDPR5
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAB-BEZKONDPR5.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BEZKONDPR6
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAB-BEZKONDPR6
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAB-BEZKONDPR6.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BEZKONDPR7
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAB-BEZKONDPR7
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAB-BEZKONDPR7.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BEZKONDPR8
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TJHAB-BEZKONDPR8
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TJHAB-BEZKONDPR8.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TJHAB_STR, 
MANDT TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
POS_ART TYPE STRING,
BEZKONDPR1 TYPE STRING,
DEDOKU_PR1 TYPE STRING,
BEZKONDPR2 TYPE STRING,
DEDOKU_PR2 TYPE STRING,
BEZKONDPR3 TYPE STRING,
DEDOKU_PR3 TYPE STRING,
BEZKONDPR4 TYPE STRING,
DEDOKU_PR4 TYPE STRING,
BEZKONDPR5 TYPE STRING,
DEDOKU_PR5 TYPE STRING,
BEZKONDPR6 TYPE STRING,
DEDOKU_PR6 TYPE STRING,
BEZKONDPR7 TYPE STRING,
DEDOKU_PR7 TYPE STRING,
BEZKONDPR8 TYPE STRING,
DEDOKU_PR8 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TJHAB_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_TJHAB_STR-MANDT sy-vline 
WA_TJHAB_STR-VKORG sy-vline 
WA_TJHAB_STR-VTWEG sy-vline 
WA_TJHAB_STR-SPART sy-vline 
WA_TJHAB_STR-POS_ART sy-vline 
WA_TJHAB_STR-BEZKONDPR1 sy-vline 
WA_TJHAB_STR-DEDOKU_PR1 sy-vline 
WA_TJHAB_STR-BEZKONDPR2 sy-vline 
WA_TJHAB_STR-DEDOKU_PR2 sy-vline 
WA_TJHAB_STR-BEZKONDPR3 sy-vline 
WA_TJHAB_STR-DEDOKU_PR3 sy-vline 
WA_TJHAB_STR-BEZKONDPR4 sy-vline 
WA_TJHAB_STR-DEDOKU_PR4 sy-vline 
WA_TJHAB_STR-BEZKONDPR5 sy-vline 
WA_TJHAB_STR-DEDOKU_PR5 sy-vline 
WA_TJHAB_STR-BEZKONDPR6 sy-vline 
WA_TJHAB_STR-DEDOKU_PR6 sy-vline 
WA_TJHAB_STR-BEZKONDPR7 sy-vline 
WA_TJHAB_STR-DEDOKU_PR7 sy-vline 
WA_TJHAB_STR-BEZKONDPR8 sy-vline 
WA_TJHAB_STR-DEDOKU_PR8 sy-vline      INTO ld_text SEPARATED BY SPACE.

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