ABAP Select data from SAP table /SCMB/SC_EXPL_REQU into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /SCMB/SC_EXPL_REQU 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 /SCMB/SC_EXPL_REQU. 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 /SCMB/SC_EXPL_REQU 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_/SCMB/SC_EXPL_REQU TYPE STANDARD TABLE OF /SCMB/SC_EXPL_REQU,
      WA_/SCMB/SC_EXPL_REQU TYPE /SCMB/SC_EXPL_REQU,
      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: </SCMB/SC_EXPL_REQU> TYPE /SCMB/SC_EXPL_REQU.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /SCMB/SC_EXPL_REQU
  INTO TABLE IT_/SCMB/SC_EXPL_REQU.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /SCMB/SC_EXPL_REQU
*  INTO TABLE @DATA(IT_/SCMB/SC_EXPL_REQU2).
*--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_/SCMB/SC_EXPL_REQU INDEX 1 INTO DATA(WA_/SCMB/SC_EXPL_REQU2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/SCMB/SC_EXPL_REQU ASSIGNING </SCMB/SC_EXPL_REQU>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</SCMB/SC_EXPL_REQU>-WORKFLOWID = 1.
</SCMB/SC_EXPL_REQU>-PROCALIAS = 1.
</SCMB/SC_EXPL_REQU>-SCHEME = 1.
</SCMB/SC_EXPL_REQU>-TIMEUNITAS = 1.
</SCMB/SC_EXPL_REQU>-PASTLIMIT = 1.

ENDLOOP.

LOOP AT IT_/SCMB/SC_EXPL_REQU INTO WA_/SCMB/SC_EXPL_REQU.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/SCMB/SC_EXPL_REQU-PUSHPULL, sy-vline,
  WA_/SCMB/SC_EXPL_REQU-PPCNTRL, sy-vline,
  WA_/SCMB/SC_EXPL_REQU-DATETYPE, sy-vline,
  WA_/SCMB/SC_EXPL_REQU-ACTITYPE, sy-vline,
  WA_/SCMB/SC_EXPL_REQU-DCAT, sy-vline,
  WA_/SCMB/SC_EXPL_REQU-DATETYPE_DERIVED, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/SCMB/SC_EXPL_REQU 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_/SCMB/SC_EXPL_REQU 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_/SCMB/SC_EXPL_REQU INTO WA_/SCMB/SC_EXPL_REQU.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/SCMB/SC_EXPL_REQU_STR, 
WORKFLOWID TYPE STRING,
PROCALIAS TYPE STRING,
SCHEME TYPE STRING,
TIMEUNITAS TYPE STRING,
PASTLIMIT TYPE STRING,
PUSHPULL TYPE STRING,
PPCNTRL TYPE STRING,
DATETYPE TYPE STRING,
ACTITYPE TYPE STRING,
DCAT TYPE STRING,
DATETYPE_DERIVED TYPE STRING,
ENTRYDATE TYPE STRING,
TIME TYPE STRING,
DATETYPE TYPE STRING,
ACTITYPE TYPE STRING,
DCAT TYPE STRING,
DATETYPE_DERIVED TYPE STRING,
FDATETAB TYPE STRING,
ENTRIES TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/SCMB/SC_EXPL_REQU_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_/SCMB/SC_EXPL_REQU_STR-WORKFLOWID sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-PROCALIAS sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-SCHEME sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-TIMEUNITAS sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-PASTLIMIT sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-PUSHPULL sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-PPCNTRL sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-DATETYPE sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-ACTITYPE sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-DCAT sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-DATETYPE_DERIVED sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-ENTRYDATE sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-TIME sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-DATETYPE sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-ACTITYPE sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-DCAT sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-DATETYPE_DERIVED sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-FDATETAB sy-vline 
WA_/SCMB/SC_EXPL_REQU_STR-ENTRIES sy-vline      INTO ld_text SEPARATED BY SPACE.

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