ABAP Select data from SAP table EMMA_HDR_ALV into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EMMA_HDR_ALV
*  INTO TABLE @DATA(IT_EMMA_HDR_ALV2).
*--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_EMMA_HDR_ALV INDEX 1 INTO DATA(WA_EMMA_HDR_ALV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EMMA_HDR_ALV>-STATUS = 1.
<EMMA_HDR_ALV>-CLIENT = 1.
<EMMA_HDR_ALV>-RUNID = 1.
<EMMA_HDR_ALV>-BPCODE = 1.
<EMMA_HDR_ALV>-BPGUID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EMMA_HDR_ALV-EXTRUNID, sy-vline,
  WA_EMMA_HDR_ALV-VERSION, sy-vline,
  WA_EMMA_HDR_ALV-LOGTCODE, sy-vline,
  WA_EMMA_HDR_ALV-XPREP, sy-vline,
  WA_EMMA_HDR_ALV-XSIMU, sy-vline,
  WA_EMMA_HDR_ALV-XPRUN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EMMA_HDR_ALV 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_EMMA_HDR_ALV 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_EMMA_HDR_ALV INTO WA_EMMA_HDR_ALV.


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

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EMMA_HDR_ALV-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EMMA_HDR_ALV-LOGSYS.
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_EMMA_HDR_ALV_STR, 
STATUS TYPE STRING,
CLIENT TYPE STRING,
RUNID TYPE STRING,
BPCODE TYPE STRING,
BPGUID TYPE STRING,
EXTRUNID TYPE STRING,
VERSION TYPE STRING,
LOGTCODE TYPE STRING,
XPREP TYPE STRING,
XSIMU TYPE STRING,
XPRUN TYPE STRING,
LOGUSER TYPE STRING,
LOGDATE TYPE STRING,
LOGTIME TYPE STRING,
INTNR TYPE STRING,
OBJECT_PROCESS TYPE STRING,
OBJECT_ERROR TYPE STRING,
OBJECT_WARNING TYPE STRING,
OBJECT_SUCCESS TYPE STRING,
MESSAGE_ERROR TYPE STRING,
MESSAGE_WARNING TYPE STRING,
MESSAGE_INFO TYPE STRING,
MESSAGE_COUNT TYPE STRING,
EMMA_CASE TYPE STRING,
EMMA_JOBRUSTATUS TYPE STRING,
CGEN_STATUS TYPE STRING,
PREV_USER TYPE STRING,
PREV_DATE TYPE STRING,
PREV_TIME TYPE STRING,
LOGSYS TYPE STRING,
BRGRU TYPE STRING,
BOX TYPE STRING,
OBJECT TYPE STRING,
CASES TYPE STRING,
JOBRUNSTATUS TYPE STRING,
XPRUNSTATUS TYPE STRING,
XPCASESTATUS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EMMA_HDR_ALV_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_EMMA_HDR_ALV_STR-STATUS sy-vline 
WA_EMMA_HDR_ALV_STR-CLIENT sy-vline 
WA_EMMA_HDR_ALV_STR-RUNID sy-vline 
WA_EMMA_HDR_ALV_STR-BPCODE sy-vline 
WA_EMMA_HDR_ALV_STR-BPGUID sy-vline 
WA_EMMA_HDR_ALV_STR-EXTRUNID sy-vline 
WA_EMMA_HDR_ALV_STR-VERSION sy-vline 
WA_EMMA_HDR_ALV_STR-LOGTCODE sy-vline 
WA_EMMA_HDR_ALV_STR-XPREP sy-vline 
WA_EMMA_HDR_ALV_STR-XSIMU sy-vline 
WA_EMMA_HDR_ALV_STR-XPRUN sy-vline 
WA_EMMA_HDR_ALV_STR-LOGUSER sy-vline 
WA_EMMA_HDR_ALV_STR-LOGDATE sy-vline 
WA_EMMA_HDR_ALV_STR-LOGTIME sy-vline 
WA_EMMA_HDR_ALV_STR-INTNR sy-vline 
WA_EMMA_HDR_ALV_STR-OBJECT_PROCESS sy-vline 
WA_EMMA_HDR_ALV_STR-OBJECT_ERROR sy-vline 
WA_EMMA_HDR_ALV_STR-OBJECT_WARNING sy-vline 
WA_EMMA_HDR_ALV_STR-OBJECT_SUCCESS sy-vline 
WA_EMMA_HDR_ALV_STR-MESSAGE_ERROR sy-vline 
WA_EMMA_HDR_ALV_STR-MESSAGE_WARNING sy-vline 
WA_EMMA_HDR_ALV_STR-MESSAGE_INFO sy-vline 
WA_EMMA_HDR_ALV_STR-MESSAGE_COUNT sy-vline 
WA_EMMA_HDR_ALV_STR-EMMA_CASE sy-vline 
WA_EMMA_HDR_ALV_STR-EMMA_JOBRUSTATUS sy-vline 
WA_EMMA_HDR_ALV_STR-CGEN_STATUS sy-vline 
WA_EMMA_HDR_ALV_STR-PREV_USER sy-vline 
WA_EMMA_HDR_ALV_STR-PREV_DATE sy-vline 
WA_EMMA_HDR_ALV_STR-PREV_TIME sy-vline 
WA_EMMA_HDR_ALV_STR-LOGSYS sy-vline 
WA_EMMA_HDR_ALV_STR-BRGRU sy-vline 
WA_EMMA_HDR_ALV_STR-BOX sy-vline 
WA_EMMA_HDR_ALV_STR-OBJECT sy-vline 
WA_EMMA_HDR_ALV_STR-CASES sy-vline 
WA_EMMA_HDR_ALV_STR-JOBRUNSTATUS sy-vline 
WA_EMMA_HDR_ALV_STR-XPRUNSTATUS sy-vline 
WA_EMMA_HDR_ALV_STR-XPCASESTATUS sy-vline      INTO ld_text SEPARATED BY SPACE.

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