ABAP Select data from SAP table CRMT_APO_LOCATION_HEAD into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CRMT_APO_LOCATION_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 CRMT_APO_LOCATION_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 CRMT_APO_LOCATION_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_CRMT_APO_LOCATION_HEAD TYPE STANDARD TABLE OF CRMT_APO_LOCATION_HEAD,
      WA_CRMT_APO_LOCATION_HEAD TYPE CRMT_APO_LOCATION_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: <CRMT_APO_LOCATION_HEAD> TYPE CRMT_APO_LOCATION_HEAD.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CRMT_APO_LOCATION_HEAD
*  INTO TABLE @DATA(IT_CRMT_APO_LOCATION_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_CRMT_APO_LOCATION_HEAD INDEX 1 INTO DATA(WA_CRMT_APO_LOCATION_HEAD2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CRMT_APO_LOCATION_HEAD>-LOCATION_ID = 1.
<CRMT_APO_LOCATION_HEAD>-LOCATION = 1.
<CRMT_APO_LOCATION_HEAD>-LOCATION_INT = 1.
<CRMT_APO_LOCATION_HEAD>-LOCTYPE = 1.
<CRMT_APO_LOCATION_HEAD>-TIMEZONE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CRMT_APO_LOCATION_HEAD-XPOS, sy-vline,
  WA_CRMT_APO_LOCATION_HEAD-YPOS, sy-vline,
  WA_CRMT_APO_LOCATION_HEAD-STORE, sy-vline,
  WA_CRMT_APO_LOCATION_HEAD-PPCAL, sy-vline,
  WA_CRMT_APO_LOCATION_HEAD-SDCAL, sy-vline,
  WA_CRMT_APO_LOCATION_HEAD-STCAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CRMT_APO_LOCATION_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_CRMT_APO_LOCATION_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_CRMT_APO_LOCATION_HEAD INTO WA_CRMT_APO_LOCATION_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 CUNIT, internal->external for field COM_TIME_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_APO_LOCATION_HEAD-COM_TIME_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_APO_LOCATION_HEAD-COM_TIME_UNIT.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field ADDR_NO
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CRMT_APO_LOCATION_HEAD-ADDR_NO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CRMT_APO_LOCATION_HEAD-ADDR_NO.
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_CRMT_APO_LOCATION_HEAD_STR, 
LOCATION_ID TYPE STRING,
LOCATION TYPE STRING,
LOCATION_INT TYPE STRING,
LOCTYPE TYPE STRING,
TIMEZONE TYPE STRING,
XPOS TYPE STRING,
YPOS TYPE STRING,
STORE TYPE STRING,
PPCAL TYPE STRING,
SDCAL TYPE STRING,
STCAL TYPE STRING,
LVORM TYPE STRING,
LOCPRIO TYPE STRING,
ATDSP TYPE STRING,
ATDDM TYPE STRING,
PRREG TYPE STRING,
COMP_FLG TYPE STRING,
CONSOL_FLG TYPE STRING,
PUSH_FLG TYPE STRING,
COM_TIME TYPE STRING,
COM_TIME_UNIT TYPE STRING,
COM_TIME_UNIT_ISO TYPE STRING,
TRPCR_TIME TYPE STRING,
TRPCR_TIME_UNIT TYPE STRING,
TRPCR_TIME_UNIT_ISO TYPE STRING,
RESFLAG TYPE STRING,
STOCG TYPE STRING,
ADDR_NO TYPE STRING,
SUBLOCATION TYPE STRING,
SETUPKEY TYPE STRING,
SCACD TYPE STRING,
ATTLO01 TYPE STRING,
ATTLO02 TYPE STRING,
ATTLO03 TYPE STRING,
ATTLO04 TYPE STRING,
ATTLO05 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CRMT_APO_LOCATION_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_CRMT_APO_LOCATION_HEAD_STR-LOCATION_ID sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-LOCATION sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-LOCATION_INT sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-LOCTYPE sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-TIMEZONE sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-XPOS sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-YPOS sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-STORE sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-PPCAL sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-SDCAL sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-STCAL sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-LVORM sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-LOCPRIO sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-ATDSP sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-ATDDM sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-PRREG sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-COMP_FLG sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-CONSOL_FLG sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-PUSH_FLG sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-COM_TIME sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-COM_TIME_UNIT sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-COM_TIME_UNIT_ISO sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-TRPCR_TIME sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-TRPCR_TIME_UNIT sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-TRPCR_TIME_UNIT_ISO sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-RESFLAG sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-STOCG sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-ADDR_NO sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-SUBLOCATION sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-SETUPKEY sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-SCACD sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-ATTLO01 sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-ATTLO02 sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-ATTLO03 sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-ATTLO04 sy-vline 
WA_CRMT_APO_LOCATION_HEAD_STR-ATTLO05 sy-vline      INTO ld_text SEPARATED BY SPACE.

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