ABAP Select data from SAP table RLB_S_PUSH into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RLB_S_PUSH
*  INTO TABLE @DATA(IT_RLB_S_PUSH2).
*--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_RLB_S_PUSH INDEX 1 INTO DATA(WA_RLB_S_PUSH2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RLB_S_PUSH>-TEXT = 1.
<RLB_S_PUSH>-PROG = 1.
<RLB_S_PUSH>-FUNC = 1.
<RLB_S_PUSH>-FUGR = 1.
<RLB_S_PUSH>-DOMA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RLB_S_PUSH-DDTY, sy-vline,
  WA_RLB_S_PUSH-TYPE, sy-vline,
  WA_RLB_S_PUSH-LDBA, sy-vline,
  WA_RLB_S_PUSH-TRAN, sy-vline,
  WA_RLB_S_PUSH-CLIF, sy-vline,
  WA_RLB_S_PUSH-IASP, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RLB_S_PUSH 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_RLB_S_PUSH 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_RLB_S_PUSH INTO WA_RLB_S_PUSH.


*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_RLB_S_PUSH_STR, 
TEXT TYPE STRING,
PROG TYPE STRING,
FUNC TYPE STRING,
FUGR TYPE STRING,
DOMA TYPE STRING,
DDTY TYPE STRING,
TYPE TYPE STRING,
LDBA TYPE STRING,
TRAN TYPE STRING,
CLIF TYPE STRING,
IASP TYPE STRING,
IAMA TYPE STRING,
SOBJ TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RLB_S_PUSH_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_RLB_S_PUSH_STR-TEXT sy-vline 
WA_RLB_S_PUSH_STR-PROG sy-vline 
WA_RLB_S_PUSH_STR-FUNC sy-vline 
WA_RLB_S_PUSH_STR-FUGR sy-vline 
WA_RLB_S_PUSH_STR-DOMA sy-vline 
WA_RLB_S_PUSH_STR-DDTY sy-vline 
WA_RLB_S_PUSH_STR-TYPE sy-vline 
WA_RLB_S_PUSH_STR-LDBA sy-vline 
WA_RLB_S_PUSH_STR-TRAN sy-vline 
WA_RLB_S_PUSH_STR-CLIF sy-vline 
WA_RLB_S_PUSH_STR-IASP sy-vline 
WA_RLB_S_PUSH_STR-IAMA sy-vline 
WA_RLB_S_PUSH_STR-SOBJ sy-vline      INTO ld_text SEPARATED BY SPACE.

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