ABAP Select data from SAP table ECRM_EASTS into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ECRM_EASTS
*  INTO TABLE @DATA(IT_ECRM_EASTS2).
*--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_ECRM_EASTS INDEX 1 INTO DATA(WA_ECRM_EASTS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ECRM_EASTS>-MANDT = 1.
<ECRM_EASTS>-ANLAGE = 1.
<ECRM_EASTS>-LOGIKZW = 1.
<ECRM_EASTS>-BIS = 1.
<ECRM_EASTS>-AB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ECRM_EASTS-ZWNABR, sy-vline,
  WA_ECRM_EASTS-GVERRECH, sy-vline,
  WA_ECRM_EASTS-TARIFART, sy-vline,
  WA_ECRM_EASTS-KONDIGR, sy-vline,
  WA_ECRM_EASTS-RABZUS, sy-vline,
  WA_ECRM_EASTS-PREISKLA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ECRM_EASTS 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_ECRM_EASTS 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_ECRM_EASTS INTO WA_ECRM_EASTS.


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

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

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

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

*Conversion exit GERNR, internal->external for field GERAET
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_ECRM_EASTS-GERAET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECRM_EASTS-GERAET.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field SERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_ECRM_EASTS-SERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECRM_EASTS-SERNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ECRM_EASTS-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECRM_EASTS-EQUNR.
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_ECRM_EASTS_STR, 
MANDT TYPE STRING,
ANLAGE TYPE STRING,
LOGIKZW TYPE STRING,
BIS TYPE STRING,
AB TYPE STRING,
ZWNABR TYPE STRING,
GVERRECH TYPE STRING,
TARIFART TYPE STRING,
KONDIGR TYPE STRING,
RABZUS TYPE STRING,
PREISKLA TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
ZWNSETTL TYPE STRING,
MATNR TYPE STRING,
GERAET TYPE STRING,
SERNR TYPE STRING,
EQUNR TYPE STRING,
ZWNUMMER TYPE STRING,
PERVERBR TYPE STRING,
ZWART TYPE STRING,
KENNZIFF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ECRM_EASTS_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_ECRM_EASTS_STR-MANDT sy-vline 
WA_ECRM_EASTS_STR-ANLAGE sy-vline 
WA_ECRM_EASTS_STR-LOGIKZW sy-vline 
WA_ECRM_EASTS_STR-BIS sy-vline 
WA_ECRM_EASTS_STR-AB sy-vline 
WA_ECRM_EASTS_STR-ZWNABR sy-vline 
WA_ECRM_EASTS_STR-GVERRECH sy-vline 
WA_ECRM_EASTS_STR-TARIFART sy-vline 
WA_ECRM_EASTS_STR-KONDIGR sy-vline 
WA_ECRM_EASTS_STR-RABZUS sy-vline 
WA_ECRM_EASTS_STR-PREISKLA sy-vline 
WA_ECRM_EASTS_STR-ERDAT sy-vline 
WA_ECRM_EASTS_STR-ERNAM sy-vline 
WA_ECRM_EASTS_STR-AEDAT sy-vline 
WA_ECRM_EASTS_STR-AENAM sy-vline 
WA_ECRM_EASTS_STR-ZWNSETTL sy-vline 
WA_ECRM_EASTS_STR-MATNR sy-vline 
WA_ECRM_EASTS_STR-GERAET sy-vline 
WA_ECRM_EASTS_STR-SERNR sy-vline 
WA_ECRM_EASTS_STR-EQUNR sy-vline 
WA_ECRM_EASTS_STR-ZWNUMMER sy-vline 
WA_ECRM_EASTS_STR-PERVERBR sy-vline 
WA_ECRM_EASTS_STR-ZWART sy-vline 
WA_ECRM_EASTS_STR-KENNZIFF sy-vline      INTO ld_text SEPARATED BY SPACE.

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