ABAP Select data from SAP table CCIHS_MJSEL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CCIHS_MJSEL
*  INTO TABLE @DATA(IT_CCIHS_MJSEL2).
*--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_CCIHS_MJSEL INDEX 1 INTO DATA(WA_CCIHS_MJSEL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CCIHS_MJSEL>-MANDT = 1.
<CCIHS_MJSEL>-MJID = 1.
<CCIHS_MJSEL>-MJSTAT = 1.
<CCIHS_MJSEL>-MSHSTANAM = 1.
<CCIHS_MJSEL>-MSTATNAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CCIHS_MJSEL-MJCAT, sy-vline,
  WA_CCIHS_MJSEL-MJCATTXT, sy-vline,
  WA_CCIHS_MJSEL-MSOURCEID, sy-vline,
  WA_CCIHS_MJSEL-MSOURCE, sy-vline,
  WA_CCIHS_MJSEL-MSOURCENOTE, sy-vline,
  WA_CCIHS_MJSEL-MPH_WAID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CCIHS_MJSEL 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_CCIHS_MJSEL 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_CCIHS_MJSEL INTO WA_CCIHS_MJSEL.


*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 CHRID, internal->external for field MPH_WAID
CALL FUNCTION 'CONVERSION_EXIT_CHRID_OUTPUT'
  EXPORTING
    input =                      WA_CCIHS_MJSEL-MPH_WAID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCIHS_MJSEL-MPH_WAID.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CHRID, internal->external for field MPW_WAID
CALL FUNCTION 'CONVERSION_EXIT_CHRID_OUTPUT'
  EXPORTING
    input =                      WA_CCIHS_MJSEL-MPW_WAID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCIHS_MJSEL-MPW_WAID.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit ALPHA, internal->external for field RECNTMPWA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CCIHS_MJSEL-RECNTMPWA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CCIHS_MJSEL-RECNTMPWA.
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_CCIHS_MJSEL_STR, 
MANDT TYPE STRING,
MJID TYPE STRING,
MJSTAT TYPE STRING,
MSHSTANAM TYPE STRING,
MSTATNAM TYPE STRING,
MJCAT TYPE STRING,
MJCATTXT TYPE STRING,
MSOURCEID TYPE STRING,
MSOURCE TYPE STRING,
MSOURCENOTE TYPE STRING,
MPH_WAID TYPE STRING,
MPH_WANAM TYPE STRING,
MPH_RECNTWAH TYPE STRING,
MPW_WAID TYPE STRING,
MPW_WANAM TYPE STRING,
MPW_RECNTWAH TYPE STRING,
MSRBGNDATE TYPE STRING,
METHOD TYPE STRING,
METHODTXT TYPE STRING,
MPERSON TYPE STRING,
MPERSONGRP TYPE STRING,
MPERSONNAME TYPE STRING,
STMFLG TYPE STRING,
VALDAT TYPE STRING,
AENNR TYPE STRING,
VALFR TYPE STRING,
VALTO TYPE STRING,
SEARCHMODE TYPE STRING,
RECNROOT TYPE STRING,
RECNTMPWA TYPE STRING,
MPID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CCIHS_MJSEL_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_CCIHS_MJSEL_STR-MANDT sy-vline 
WA_CCIHS_MJSEL_STR-MJID sy-vline 
WA_CCIHS_MJSEL_STR-MJSTAT sy-vline 
WA_CCIHS_MJSEL_STR-MSHSTANAM sy-vline 
WA_CCIHS_MJSEL_STR-MSTATNAM sy-vline 
WA_CCIHS_MJSEL_STR-MJCAT sy-vline 
WA_CCIHS_MJSEL_STR-MJCATTXT sy-vline 
WA_CCIHS_MJSEL_STR-MSOURCEID sy-vline 
WA_CCIHS_MJSEL_STR-MSOURCE sy-vline 
WA_CCIHS_MJSEL_STR-MSOURCENOTE sy-vline 
WA_CCIHS_MJSEL_STR-MPH_WAID sy-vline 
WA_CCIHS_MJSEL_STR-MPH_WANAM sy-vline 
WA_CCIHS_MJSEL_STR-MPH_RECNTWAH sy-vline 
WA_CCIHS_MJSEL_STR-MPW_WAID sy-vline 
WA_CCIHS_MJSEL_STR-MPW_WANAM sy-vline 
WA_CCIHS_MJSEL_STR-MPW_RECNTWAH sy-vline 
WA_CCIHS_MJSEL_STR-MSRBGNDATE sy-vline 
WA_CCIHS_MJSEL_STR-METHOD sy-vline 
WA_CCIHS_MJSEL_STR-METHODTXT sy-vline 
WA_CCIHS_MJSEL_STR-MPERSON sy-vline 
WA_CCIHS_MJSEL_STR-MPERSONGRP sy-vline 
WA_CCIHS_MJSEL_STR-MPERSONNAME sy-vline 
WA_CCIHS_MJSEL_STR-STMFLG sy-vline 
WA_CCIHS_MJSEL_STR-VALDAT sy-vline 
WA_CCIHS_MJSEL_STR-AENNR sy-vline 
WA_CCIHS_MJSEL_STR-VALFR sy-vline 
WA_CCIHS_MJSEL_STR-VALTO sy-vline 
WA_CCIHS_MJSEL_STR-SEARCHMODE sy-vline 
WA_CCIHS_MJSEL_STR-RECNROOT sy-vline 
WA_CCIHS_MJSEL_STR-RECNTMPWA sy-vline 
WA_CCIHS_MJSEL_STR-MPID sy-vline      INTO ld_text SEPARATED BY SPACE.

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