ABAP Select data from SAP table CSRFC_HEAD into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSRFC_HEAD
*  INTO TABLE @DATA(IT_CSRFC_HEAD2).
*--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_CSRFC_HEAD INDEX 1 INTO DATA(WA_CSRFC_HEAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSRFC_HEAD>-STYPE = 1.
<CSRFC_HEAD>-TCODE = 1.
<CSRFC_HEAD>-AENNR = 1.
<CSRFC_HEAD>-BMEIN = 1.
<CSRFC_HEAD>-BMENG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSRFC_HEAD-CADKZ, sy-vline,
  WA_CSRFC_HEAD-DATUB, sy-vline,
  WA_CSRFC_HEAD-DATUV, sy-vline,
  WA_CSRFC_HEAD-EMENG, sy-vline,
  WA_CSRFC_HEAD-EQUNR, sy-vline,
  WA_CSRFC_HEAD-EXSTL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSRFC_HEAD 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_CSRFC_HEAD 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_CSRFC_HEAD INTO WA_CSRFC_HEAD.


*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 AENNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSRFC_HEAD-AENNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSRFC_HEAD-AENNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field BMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CSRFC_HEAD-BMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSRFC_HEAD-BMEIN.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CSRFC_HEAD-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSRFC_HEAD-MATNR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit MATN1, internal->external for field VMTNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CSRFC_HEAD-VMTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSRFC_HEAD-VMTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field REVLV
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_CSRFC_HEAD-REVLV
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSRFC_HEAD-REVLV.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_CSRFC_HEAD-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSRFC_HEAD-TPLNR.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

*Conversion exit TPLNR, internal->external for field VTPNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_CSRFC_HEAD-VTPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSRFC_HEAD-VTPNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit MATN1, internal->external for field BI_IDNRK
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CSRFC_HEAD-BI_IDNRK
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSRFC_HEAD-BI_IDNRK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field BI_SPOSN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_CSRFC_HEAD-BI_SPOSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSRFC_HEAD-BI_SPOSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BI_STLAL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSRFC_HEAD-BI_STLAL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSRFC_HEAD-BI_STLAL.
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_CSRFC_HEAD_STR, 
STYPE TYPE STRING,
TCODE TYPE STRING,
AENNR TYPE STRING,
BMEIN TYPE STRING,
BMENG TYPE STRING,
CADKZ TYPE STRING,
DATUB TYPE STRING,
DATUV TYPE STRING,
EMENG TYPE STRING,
EQUNR TYPE STRING,
EXSTL TYPE STRING,
LABOR TYPE STRING,
LOEKZ TYPE STRING,
LOSBS TYPE STRING,
LOSVN TYPE STRING,
MATNR TYPE STRING,
SELAL TYPE STRING,
SERGE TYPE STRING,
STKTX TYPE STRING,
STLAL TYPE STRING,
STLAN TYPE STRING,
STLBE TYPE STRING,
STLST TYPE STRING,
VMTNR TYPE STRING,
WERKS TYPE STRING,
ZTEXT TYPE STRING,
REVLV TYPE STRING,
TPLNR TYPE STRING,
DOKAR TYPE STRING,
DOKNR TYPE STRING,
DOKTL TYPE STRING,
DOKVR TYPE STRING,
VBELN TYPE STRING,
VBPOS TYPE STRING,
STOBJ TYPE STRING,
VDKNR TYPE STRING,
VDKAR TYPE STRING,
VDKTL TYPE STRING,
VDKVR TYPE STRING,
VEQNR TYPE STRING,
VTPNR TYPE STRING,
PSPNR TYPE STRING,
OITXT TYPE STRING,
BI_CLASS TYPE STRING,
BI_DOKAR TYPE STRING,
BI_DOKNR TYPE STRING,
BI_DOKTL TYPE STRING,
BI_DOKVR TYPE STRING,
BI_FCODE TYPE STRING,
BI_FPALT TYPE STRING,
BI_IDNRK TYPE STRING,
BI_KLART TYPE STRING,
BI_POSTP TYPE STRING,
BI_SPOSN TYPE STRING,
BI_STLAL TYPE STRING,
BI_STLKN TYPE STRING,
BI_STPOZ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSRFC_HEAD_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_CSRFC_HEAD_STR-STYPE sy-vline 
WA_CSRFC_HEAD_STR-TCODE sy-vline 
WA_CSRFC_HEAD_STR-AENNR sy-vline 
WA_CSRFC_HEAD_STR-BMEIN sy-vline 
WA_CSRFC_HEAD_STR-BMENG sy-vline 
WA_CSRFC_HEAD_STR-CADKZ sy-vline 
WA_CSRFC_HEAD_STR-DATUB sy-vline 
WA_CSRFC_HEAD_STR-DATUV sy-vline 
WA_CSRFC_HEAD_STR-EMENG sy-vline 
WA_CSRFC_HEAD_STR-EQUNR sy-vline 
WA_CSRFC_HEAD_STR-EXSTL sy-vline 
WA_CSRFC_HEAD_STR-LABOR sy-vline 
WA_CSRFC_HEAD_STR-LOEKZ sy-vline 
WA_CSRFC_HEAD_STR-LOSBS sy-vline 
WA_CSRFC_HEAD_STR-LOSVN sy-vline 
WA_CSRFC_HEAD_STR-MATNR sy-vline 
WA_CSRFC_HEAD_STR-SELAL sy-vline 
WA_CSRFC_HEAD_STR-SERGE sy-vline 
WA_CSRFC_HEAD_STR-STKTX sy-vline 
WA_CSRFC_HEAD_STR-STLAL sy-vline 
WA_CSRFC_HEAD_STR-STLAN sy-vline 
WA_CSRFC_HEAD_STR-STLBE sy-vline 
WA_CSRFC_HEAD_STR-STLST sy-vline 
WA_CSRFC_HEAD_STR-VMTNR sy-vline 
WA_CSRFC_HEAD_STR-WERKS sy-vline 
WA_CSRFC_HEAD_STR-ZTEXT sy-vline 
WA_CSRFC_HEAD_STR-REVLV sy-vline 
WA_CSRFC_HEAD_STR-TPLNR sy-vline 
WA_CSRFC_HEAD_STR-DOKAR sy-vline 
WA_CSRFC_HEAD_STR-DOKNR sy-vline 
WA_CSRFC_HEAD_STR-DOKTL sy-vline 
WA_CSRFC_HEAD_STR-DOKVR sy-vline 
WA_CSRFC_HEAD_STR-VBELN sy-vline 
WA_CSRFC_HEAD_STR-VBPOS sy-vline 
WA_CSRFC_HEAD_STR-STOBJ sy-vline 
WA_CSRFC_HEAD_STR-VDKNR sy-vline 
WA_CSRFC_HEAD_STR-VDKAR sy-vline 
WA_CSRFC_HEAD_STR-VDKTL sy-vline 
WA_CSRFC_HEAD_STR-VDKVR sy-vline 
WA_CSRFC_HEAD_STR-VEQNR sy-vline 
WA_CSRFC_HEAD_STR-VTPNR sy-vline 
WA_CSRFC_HEAD_STR-PSPNR sy-vline 
WA_CSRFC_HEAD_STR-OITXT sy-vline 
WA_CSRFC_HEAD_STR-BI_CLASS sy-vline 
WA_CSRFC_HEAD_STR-BI_DOKAR sy-vline 
WA_CSRFC_HEAD_STR-BI_DOKNR sy-vline 
WA_CSRFC_HEAD_STR-BI_DOKTL sy-vline 
WA_CSRFC_HEAD_STR-BI_DOKVR sy-vline 
WA_CSRFC_HEAD_STR-BI_FCODE sy-vline 
WA_CSRFC_HEAD_STR-BI_FPALT sy-vline 
WA_CSRFC_HEAD_STR-BI_IDNRK sy-vline 
WA_CSRFC_HEAD_STR-BI_KLART sy-vline 
WA_CSRFC_HEAD_STR-BI_POSTP sy-vline 
WA_CSRFC_HEAD_STR-BI_SPOSN sy-vline 
WA_CSRFC_HEAD_STR-BI_STLAL sy-vline 
WA_CSRFC_HEAD_STR-BI_STLKN sy-vline 
WA_CSRFC_HEAD_STR-BI_STPOZ sy-vline      INTO ld_text SEPARATED BY SPACE.

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