ABAP Select data from SAP table TEMP21PG2 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TEMP21PG2 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 TEMP21PG2. 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 TEMP21PG2 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_TEMP21PG2 TYPE STANDARD TABLE OF TEMP21PG2,
      WA_TEMP21PG2 TYPE TEMP21PG2,
      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: <TEMP21PG2> TYPE TEMP21PG2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TEMP21PG2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TEMP21PG2
  INTO TABLE IT_TEMP21PG2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TEMP21PG2
*  INTO TABLE @DATA(IT_TEMP21PG22).
*--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_TEMP21PG2 INDEX 1 INTO DATA(WA_TEMP21PG22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TEMP21PG2 ASSIGNING <TEMP21PG2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TEMP21PG2>-PERNRPG2 = 1.
<TEMP21PG2>-BEGDA_YRMIN0 = 1.
<TEMP21PG2>-ENDDA_YRMIN0 = 1.
<TEMP21PG2>-BEGDA_YRMIN1 = 1.
<TEMP21PG2>-ENDDA_YRMIN1 = 1.

ENDLOOP.

LOOP AT IT_TEMP21PG2 INTO WA_TEMP21PG2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TEMP21PG2-BEGDA_YRMIN2, sy-vline,
  WA_TEMP21PG2-ENDDA_YRMIN2, sy-vline,
  WA_TEMP21PG2-ITEM1_YRMIN0, sy-vline,
  WA_TEMP21PG2-ITEM1_YRMIN1, sy-vline,
  WA_TEMP21PG2-ITEM1_YRMIN2, sy-vline,
  WA_TEMP21PG2-ITEM2A_YRMIN0, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TEMP21PG2 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_TEMP21PG2 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_TEMP21PG2 INTO WA_TEMP21PG2.


*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_TEMP21PG2_STR, 
PERNRPG2 TYPE STRING,
BEGDA_YRMIN0 TYPE STRING,
ENDDA_YRMIN0 TYPE STRING,
BEGDA_YRMIN1 TYPE STRING,
ENDDA_YRMIN1 TYPE STRING,
BEGDA_YRMIN2 TYPE STRING,
ENDDA_YRMIN2 TYPE STRING,
ITEM1_YRMIN0 TYPE STRING,
ITEM1_YRMIN1 TYPE STRING,
ITEM1_YRMIN2 TYPE STRING,
ITEM2A_YRMIN0 TYPE STRING,
ITEM2A_YRMIN1 TYPE STRING,
ITEM2A_YRMIN2 TYPE STRING,
ITEM2B_YRMIN0 TYPE STRING,
ITEM2B_YRMIN1 TYPE STRING,
ITEM2B_YRMIN2 TYPE STRING,
ITEM2_DATE TYPE STRING,
ITEM3_YRMIN0 TYPE STRING,
ITEM3_YRMIN1 TYPE STRING,
ITEM3_YRMIN2 TYPE STRING,
ITEM3_DATE TYPE STRING,
ITEM4A_YRMIN0 TYPE STRING,
ITEM4A_YRMIN1 TYPE STRING,
ITEM4A_YRMIN2 TYPE STRING,
ITEM4B_YRMIN0 TYPE STRING,
ITEM4B_YRMIN1 TYPE STRING,
ITEM4B_YRMIN2 TYPE STRING,
ITEM4C_YRMIN0 TYPE STRING,
ITEM4C_YRMIN1 TYPE STRING,
ITEM4C_YRMIN2 TYPE STRING,
ITEM4D_YRMIN0 TYPE STRING,
ITEM4D_YRMIN1 TYPE STRING,
ITEM4D_YRMIN2 TYPE STRING,
ITEM4E_YRMIN0 TYPE STRING,
ITEM4E_YRMIN1 TYPE STRING,
ITEM4E_YRMIN2 TYPE STRING,
ITEM4F_FUNDNAME TYPE STRING,
ITEM4F_PAYDT TYPE STRING,
ITEM4F_YRMIN0 TYPE STRING,
ITEM4F_YRMIN1 TYPE STRING,
ITEM4F_YRMIN2 TYPE STRING,
ITEM4G_FUNDNAME TYPE STRING,
ITEM4G_YRMIN0 TYPE STRING,
ITEM4G_YRMIN1 TYPE STRING,
ITEM4G_YRMIN2 TYPE STRING,
ITEM4H_YRMIN0 TYPE STRING,
ITEM4H_YRMIN1 TYPE STRING,
ITEM4H_YRMIN2 TYPE STRING,
ITEM4I_YRMIN0 TYPE STRING,
ITEM4I_YRMIN1 TYPE STRING,
ITEM4I_YRMIN2 TYPE STRING,
ITEM4I_BOX TYPE STRING,
ITEM4I_BOX1 TYPE STRING,
ITEM4I_BOX2 TYPE STRING,
ITEM4J_YRMIN0 TYPE STRING,
ITEM4J_YRMIN1 TYPE STRING,
ITEM4J_YRMIN2 TYPE STRING,
ITEM4J_BOX TYPE STRING,
ITEM4SUB_YRMIN0 TYPE STRING,
ITEM4SUB_YRMIN1 TYPE STRING,
ITEM4SUB_YRMIN2 TYPE STRING,
ITEM4TOT_YRMIN0 TYPE STRING,
ITEM4TOT_YRMIN1 TYPE STRING,
ITEM4TOT_YRMIN2 TYPE STRING,
ITEM5A_FUNDNAME TYPE STRING,
ITEM5A_YRMIN0 TYPE STRING,
ITEM5A_YRMIN1 TYPE STRING,
ITEM5A_YRMIN2 TYPE STRING,
ITEM5B_YRMIN0 TYPE STRING,
ITEM5B_YRMIN1 TYPE STRING,
ITEM5B_YRMIN2 TYPE STRING,
ITEM6_MBMF TYPE STRING,
ITEM6_CHEST TYPE STRING,
ITEM6_SINDA TYPE STRING,
ITEM6_CDAC TYPE STRING,
ITEM6_ECF TYPE STRING,
ITEM6_YRMIN0 TYPE STRING,
ITEM6_YRMIN1 TYPE STRING,
ITEM6_YRMIN2 TYPE STRING,
ITEM7_YRMIN0 TYPE STRING,
ITEM7_YRMIN1 TYPE STRING,
AUTH_PERS_NAME TYPE STRING,
AUTH_PERS_DESIGN TYPE STRING,
DECLARATION_DATE TYPE STRING,
CONT_PERS_NAME TYPE STRING,
CONT_PERS_PHONE TYPE STRING,
CONT_PERS_PAGER TYPE STRING,
CONT_PERS_FAX TYPE STRING,
CONT_PERS_EMAIL TYPE STRING,
ITEM4E_REASON TYPE STRING,
ITEM6_OTHER TYPE STRING,
ITEM4E_BASIS TYPE STRING,
ITEM4E_YEAR_INT TYPE STRING,
ITEM4E_YEAR_DEC TYPE STRING,
ITEM4E_SALARY TYPE STRING,
ITEM4F_PAYDT1 TYPE STRING,
ITEM2_DATE1 TYPE STRING,
ITEM3_DATE1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TEMP21PG2_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_TEMP21PG2_STR-PERNRPG2 sy-vline 
WA_TEMP21PG2_STR-BEGDA_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ENDDA_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-BEGDA_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ENDDA_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-BEGDA_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ENDDA_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM1_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM1_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM1_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM2A_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM2A_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM2A_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM2B_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM2B_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM2B_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM2_DATE sy-vline 
WA_TEMP21PG2_STR-ITEM3_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM3_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM3_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM3_DATE sy-vline 
WA_TEMP21PG2_STR-ITEM4A_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM4A_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM4A_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM4B_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM4B_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM4B_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM4C_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM4C_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM4C_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM4D_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM4D_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM4D_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM4E_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM4E_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM4E_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM4F_FUNDNAME sy-vline 
WA_TEMP21PG2_STR-ITEM4F_PAYDT sy-vline 
WA_TEMP21PG2_STR-ITEM4F_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM4F_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM4F_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM4G_FUNDNAME sy-vline 
WA_TEMP21PG2_STR-ITEM4G_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM4G_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM4G_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM4H_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM4H_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM4H_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM4I_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM4I_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM4I_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM4I_BOX sy-vline 
WA_TEMP21PG2_STR-ITEM4I_BOX1 sy-vline 
WA_TEMP21PG2_STR-ITEM4I_BOX2 sy-vline 
WA_TEMP21PG2_STR-ITEM4J_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM4J_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM4J_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM4J_BOX sy-vline 
WA_TEMP21PG2_STR-ITEM4SUB_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM4SUB_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM4SUB_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM4TOT_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM4TOT_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM4TOT_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM5A_FUNDNAME sy-vline 
WA_TEMP21PG2_STR-ITEM5A_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM5A_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM5A_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM5B_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM5B_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM5B_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM6_MBMF sy-vline 
WA_TEMP21PG2_STR-ITEM6_CHEST sy-vline 
WA_TEMP21PG2_STR-ITEM6_SINDA sy-vline 
WA_TEMP21PG2_STR-ITEM6_CDAC sy-vline 
WA_TEMP21PG2_STR-ITEM6_ECF sy-vline 
WA_TEMP21PG2_STR-ITEM6_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM6_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-ITEM6_YRMIN2 sy-vline 
WA_TEMP21PG2_STR-ITEM7_YRMIN0 sy-vline 
WA_TEMP21PG2_STR-ITEM7_YRMIN1 sy-vline 
WA_TEMP21PG2_STR-AUTH_PERS_NAME sy-vline 
WA_TEMP21PG2_STR-AUTH_PERS_DESIGN sy-vline 
WA_TEMP21PG2_STR-DECLARATION_DATE sy-vline 
WA_TEMP21PG2_STR-CONT_PERS_NAME sy-vline 
WA_TEMP21PG2_STR-CONT_PERS_PHONE sy-vline 
WA_TEMP21PG2_STR-CONT_PERS_PAGER sy-vline 
WA_TEMP21PG2_STR-CONT_PERS_FAX sy-vline 
WA_TEMP21PG2_STR-CONT_PERS_EMAIL sy-vline 
WA_TEMP21PG2_STR-ITEM4E_REASON sy-vline 
WA_TEMP21PG2_STR-ITEM6_OTHER sy-vline 
WA_TEMP21PG2_STR-ITEM4E_BASIS sy-vline 
WA_TEMP21PG2_STR-ITEM4E_YEAR_INT sy-vline 
WA_TEMP21PG2_STR-ITEM4E_YEAR_DEC sy-vline 
WA_TEMP21PG2_STR-ITEM4E_SALARY sy-vline 
WA_TEMP21PG2_STR-ITEM4F_PAYDT1 sy-vline 
WA_TEMP21PG2_STR-ITEM2_DATE1 sy-vline 
WA_TEMP21PG2_STR-ITEM3_DATE1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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