ABAP Select data from SAP table ECMCA into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ECMCA 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 ECMCA. 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 ECMCA 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_ECMCA TYPE STANDARD TABLE OF ECMCA,
      WA_ECMCA TYPE ECMCA,
      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: <ECMCA> TYPE ECMCA.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ECMCA
*  INTO TABLE @DATA(IT_ECMCA2).
*--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_ECMCA INDEX 1 INTO DATA(WA_ECMCA2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ECMCA>-RCLNT = 1.
<ECMCA>-GL_SIRID = 1.
<ECMCA>-RLDNR = 1.
<ECMCA>-RRCTY = 1.
<ECMCA>-RVERS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ECMCA-RYEAR, sy-vline,
  WA_ECMCA-RTCUR, sy-vline,
  WA_ECMCA-RUNIT, sy-vline,
  WA_ECMCA-DRCRK, sy-vline,
  WA_ECMCA-POPER, sy-vline,
  WA_ECMCA-DOCCT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ECMCA 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_ECMCA 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_ECMCA INTO WA_ECMCA.


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

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

*Conversion exit GJAHR, internal->external for field RYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ECMCA-RYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECMCA-RYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit AFIMC, internal->external for field RBUNIT
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_ECMCA-RBUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECMCA-RBUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit BFIMC, internal->external for field RITEM
CALL FUNCTION 'CONVERSION_EXIT_BFIMC_OUTPUT'
  EXPORTING
    input =                      WA_ECMCA-RITEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECMCA-RITEM.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field RBUPTR
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_ECMCA-RBUPTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECMCA-RBUPTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field RCONGR
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_ECMCA-RCONGR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECMCA-RCONGR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field YRACQ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ECMCA-YRACQ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECMCA-YRACQ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AFIMC, internal->external for field COICU
CALL FUNCTION 'CONVERSION_EXIT_AFIMC_OUTPUT'
  EXPORTING
    input =                      WA_ECMCA-COICU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECMCA-COICU.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field TSL
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_ECMCA-TSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECMCA-TSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field HSL
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_ECMCA-HSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECMCA-HSL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC172, internal->external for field KSL
CALL FUNCTION 'CONVERSION_EXIT_AC172_OUTPUT'
  EXPORTING
    input =                      WA_ECMCA-KSL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECMCA-KSL.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit GJAHR, internal->external for field REFRYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ECMCA-REFRYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECMCA-REFRYEAR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit GJAHR, internal->external for field REVYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ECMCA-REVYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECMCA-REVYEAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ECMCA-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ECMCA-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_ECMCA_STR, 
RCLNT TYPE STRING,
GL_SIRID TYPE STRING,
RLDNR TYPE STRING,
RRCTY TYPE STRING,
RVERS TYPE STRING,
RYEAR TYPE STRING,
RTCUR TYPE STRING,
RUNIT TYPE STRING,
DRCRK TYPE STRING,
POPER TYPE STRING,
DOCCT TYPE STRING,
DOCNR TYPE STRING,
DOCLN TYPE STRING,
RCOMP TYPE STRING,
RDIMEN TYPE STRING,
RBUNIT TYPE STRING,
RITCLG TYPE STRING,
RITEM TYPE STRING,
RBUPTR TYPE STRING,
RCONGR TYPE STRING,
ROBUKRS TYPE STRING,
SITYP TYPE STRING,
SUBIT TYPE STRING,
PLEVL TYPE STRING,
RPFLG TYPE STRING,
RTFLG TYPE STRING,
DOCTY TYPE STRING,
YRACQ TYPE STRING,
PRACQ TYPE STRING,
COICU TYPE STRING,
UPDHP TYPE STRING,
TSL TYPE STRING,
HSL TYPE STRING,
KSL TYPE STRING,
MSL TYPE STRING,
SGTXT TYPE STRING,
AUTOM TYPE STRING,
ACTIV TYPE STRING,
BVORG TYPE STRING,
BUDAT TYPE STRING,
WSDAT TYPE STRING,
REFDOCNR TYPE STRING,
REFRYEAR TYPE STRING,
REFDOCLN TYPE STRING,
REFDOCCT TYPE STRING,
REFACTIV TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
USNAM TYPE STRING,
RVSDOCNR TYPE STRING,
ORNDOCNR TYPE STRING,
COIAC TYPE STRING,
COINR TYPE STRING,
REVYEAR TYPE STRING,
AWTYP TYPE STRING,
AWORG TYPE STRING,
LOGSYS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ECMCA_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_ECMCA_STR-RCLNT sy-vline 
WA_ECMCA_STR-GL_SIRID sy-vline 
WA_ECMCA_STR-RLDNR sy-vline 
WA_ECMCA_STR-RRCTY sy-vline 
WA_ECMCA_STR-RVERS sy-vline 
WA_ECMCA_STR-RYEAR sy-vline 
WA_ECMCA_STR-RTCUR sy-vline 
WA_ECMCA_STR-RUNIT sy-vline 
WA_ECMCA_STR-DRCRK sy-vline 
WA_ECMCA_STR-POPER sy-vline 
WA_ECMCA_STR-DOCCT sy-vline 
WA_ECMCA_STR-DOCNR sy-vline 
WA_ECMCA_STR-DOCLN sy-vline 
WA_ECMCA_STR-RCOMP sy-vline 
WA_ECMCA_STR-RDIMEN sy-vline 
WA_ECMCA_STR-RBUNIT sy-vline 
WA_ECMCA_STR-RITCLG sy-vline 
WA_ECMCA_STR-RITEM sy-vline 
WA_ECMCA_STR-RBUPTR sy-vline 
WA_ECMCA_STR-RCONGR sy-vline 
WA_ECMCA_STR-ROBUKRS sy-vline 
WA_ECMCA_STR-SITYP sy-vline 
WA_ECMCA_STR-SUBIT sy-vline 
WA_ECMCA_STR-PLEVL sy-vline 
WA_ECMCA_STR-RPFLG sy-vline 
WA_ECMCA_STR-RTFLG sy-vline 
WA_ECMCA_STR-DOCTY sy-vline 
WA_ECMCA_STR-YRACQ sy-vline 
WA_ECMCA_STR-PRACQ sy-vline 
WA_ECMCA_STR-COICU sy-vline 
WA_ECMCA_STR-UPDHP sy-vline 
WA_ECMCA_STR-TSL sy-vline 
WA_ECMCA_STR-HSL sy-vline 
WA_ECMCA_STR-KSL sy-vline 
WA_ECMCA_STR-MSL sy-vline 
WA_ECMCA_STR-SGTXT sy-vline 
WA_ECMCA_STR-AUTOM sy-vline 
WA_ECMCA_STR-ACTIV sy-vline 
WA_ECMCA_STR-BVORG sy-vline 
WA_ECMCA_STR-BUDAT sy-vline 
WA_ECMCA_STR-WSDAT sy-vline 
WA_ECMCA_STR-REFDOCNR sy-vline 
WA_ECMCA_STR-REFRYEAR sy-vline 
WA_ECMCA_STR-REFDOCLN sy-vline 
WA_ECMCA_STR-REFDOCCT sy-vline 
WA_ECMCA_STR-REFACTIV sy-vline 
WA_ECMCA_STR-CPUDT sy-vline 
WA_ECMCA_STR-CPUTM sy-vline 
WA_ECMCA_STR-USNAM sy-vline 
WA_ECMCA_STR-RVSDOCNR sy-vline 
WA_ECMCA_STR-ORNDOCNR sy-vline 
WA_ECMCA_STR-COIAC sy-vline 
WA_ECMCA_STR-COINR sy-vline 
WA_ECMCA_STR-REVYEAR sy-vline 
WA_ECMCA_STR-AWTYP sy-vline 
WA_ECMCA_STR-AWORG sy-vline 
WA_ECMCA_STR-LOGSYS sy-vline      INTO ld_text SEPARATED BY SPACE.

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