ABAP Select data from SAP table MEOUT_SCHEDULE_TECH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MEOUT_SCHEDULE_TECH
*  INTO TABLE @DATA(IT_MEOUT_SCHEDULE_TECH2).
*--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_MEOUT_SCHEDULE_TECH INDEX 1 INTO DATA(WA_MEOUT_SCHEDULE_TECH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MEOUT_SCHEDULE_TECH>-MANDT = 1.
<MEOUT_SCHEDULE_TECH>-QUNUM = 1.
<MEOUT_SCHEDULE_TECH>-QUPOS = 1.
<MEOUT_SCHEDULE_TECH>-MAHNZ = 1.
<MEOUT_SCHEDULE_TECH>-AMENG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MEOUT_SCHEDULE_TECH-WEMNG, sy-vline,
  WA_MEOUT_SCHEDULE_TECH-WAMNG, sy-vline,
  WA_MEOUT_SCHEDULE_TECH-GLMNG, sy-vline,
  WA_MEOUT_SCHEDULE_TECH-DABMG, sy-vline,
  WA_MEOUT_SCHEDULE_TECH-CHARG, sy-vline,
  WA_MEOUT_SCHEDULE_TECH-LICHA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MEOUT_SCHEDULE_TECH 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_MEOUT_SCHEDULE_TECH 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_MEOUT_SCHEDULE_TECH INTO WA_MEOUT_SCHEDULE_TECH.


*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 QUNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MEOUT_SCHEDULE_TECH-QUNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MEOUT_SCHEDULE_TECH-QUNUM.
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_MEOUT_SCHEDULE_TECH_STR, 
MANDT TYPE STRING,
QUNUM TYPE STRING,
QUPOS TYPE STRING,
MAHNZ TYPE STRING,
AMENG TYPE STRING,
WEMNG TYPE STRING,
WAMNG TYPE STRING,
GLMNG TYPE STRING,
DABMG TYPE STRING,
CHARG TYPE STRING,
LICHA TYPE STRING,
CHKOM TYPE STRING,
VERID TYPE STRING,
RSNUM TYPE STRING,
SERNR TYPE STRING,
MNG02 TYPE STRING,
DAT01 TYPE STRING,
ESTKZ TYPE STRING,
FIXKZ TYPE STRING,
OBMNG TYPE STRING,
ID TYPE STRING,
NODISP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MEOUT_SCHEDULE_TECH_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_MEOUT_SCHEDULE_TECH_STR-MANDT sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-QUNUM sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-QUPOS sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-MAHNZ sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-AMENG sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-WEMNG sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-WAMNG sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-GLMNG sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-DABMG sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-CHARG sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-LICHA sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-CHKOM sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-VERID sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-RSNUM sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-SERNR sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-MNG02 sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-DAT01 sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-ESTKZ sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-FIXKZ sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-OBMNG sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-ID sy-vline 
WA_MEOUT_SCHEDULE_TECH_STR-NODISP sy-vline      INTO ld_text SEPARATED BY SPACE.

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