ABAP Select data from SAP table T7GR4TSM into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T7GR4TSM 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 T7GR4TSM. 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 T7GR4TSM 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_T7GR4TSM TYPE STANDARD TABLE OF T7GR4TSM,
      WA_T7GR4TSM TYPE T7GR4TSM,
      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: <T7GR4TSM> TYPE T7GR4TSM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T7GR4TSM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T7GR4TSM
  INTO TABLE IT_T7GR4TSM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T7GR4TSM
*  INTO TABLE @DATA(IT_T7GR4TSM2).
*--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_T7GR4TSM INDEX 1 INTO DATA(WA_T7GR4TSM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T7GR4TSM ASSIGNING <T7GR4TSM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T7GR4TSM>-MANDT = 1.
<T7GR4TSM>-BUKRS = 1.
<T7GR4TSM>-PYEAR = 1.
<T7GR4TSM>-PMONT = 1.
<T7GR4TSM>-PERNR = 1.

ENDLOOP.

LOOP AT IT_T7GR4TSM INTO WA_T7GR4TSM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T7GR4TSM-PERIOD, sy-vline,
  WA_T7GR4TSM-TSMTP, sy-vline,
  WA_T7GR4TSM-BEGDA, sy-vline,
  WA_T7GR4TSM-ENDDA, sy-vline,
  WA_T7GR4TSM-SEQNB, sy-vline,
  WA_T7GR4TSM-SYGKANAL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T7GR4TSM 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_T7GR4TSM 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_T7GR4TSM INTO WA_T7GR4TSM.


*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_T7GR4TSM_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
PYEAR TYPE STRING,
PMONT TYPE STRING,
PERNR TYPE STRING,
PERIOD TYPE STRING,
TSMTP TYPE STRING,
BEGDA TYPE STRING,
ENDDA TYPE STRING,
SEQNB TYPE STRING,
SYGKANAL TYPE STRING,
SYMFWNIA TYPE STRING,
TYINS TYPE STRING,
SIGN TYPE STRING,
REG01 TYPE STRING,
AMKA TYPE STRING,
AFM TYPE STRING,
GROSS TYPE STRING,
PENSION_EE TYPE STRING,
PENSION_ER TYPE STRING,
SPECIAL_SUR TYPE STRING,
INS_SPECIAL_SUR TYPE STRING,
ANCILLARY_EE TYPE STRING,
ANCILLARY_ER TYPE STRING,
LUMPSUM TYPE STRING,
HEALTH_EE TYPE STRING,
HEALTH_ER TYPE STRING,
TOTAL TYPE STRING,
PAYMETH TYPE STRING,
PAYDAY TYPE STRING,
WAERS TYPE STRING,
SIF TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T7GR4TSM_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_T7GR4TSM_STR-MANDT sy-vline 
WA_T7GR4TSM_STR-BUKRS sy-vline 
WA_T7GR4TSM_STR-PYEAR sy-vline 
WA_T7GR4TSM_STR-PMONT sy-vline 
WA_T7GR4TSM_STR-PERNR sy-vline 
WA_T7GR4TSM_STR-PERIOD sy-vline 
WA_T7GR4TSM_STR-TSMTP sy-vline 
WA_T7GR4TSM_STR-BEGDA sy-vline 
WA_T7GR4TSM_STR-ENDDA sy-vline 
WA_T7GR4TSM_STR-SEQNB sy-vline 
WA_T7GR4TSM_STR-SYGKANAL sy-vline 
WA_T7GR4TSM_STR-SYMFWNIA sy-vline 
WA_T7GR4TSM_STR-TYINS sy-vline 
WA_T7GR4TSM_STR-SIGN sy-vline 
WA_T7GR4TSM_STR-REG01 sy-vline 
WA_T7GR4TSM_STR-AMKA sy-vline 
WA_T7GR4TSM_STR-AFM sy-vline 
WA_T7GR4TSM_STR-GROSS sy-vline 
WA_T7GR4TSM_STR-PENSION_EE sy-vline 
WA_T7GR4TSM_STR-PENSION_ER sy-vline 
WA_T7GR4TSM_STR-SPECIAL_SUR sy-vline 
WA_T7GR4TSM_STR-INS_SPECIAL_SUR sy-vline 
WA_T7GR4TSM_STR-ANCILLARY_EE sy-vline 
WA_T7GR4TSM_STR-ANCILLARY_ER sy-vline 
WA_T7GR4TSM_STR-LUMPSUM sy-vline 
WA_T7GR4TSM_STR-HEALTH_EE sy-vline 
WA_T7GR4TSM_STR-HEALTH_ER sy-vline 
WA_T7GR4TSM_STR-TOTAL sy-vline 
WA_T7GR4TSM_STR-PAYMETH sy-vline 
WA_T7GR4TSM_STR-PAYDAY sy-vline 
WA_T7GR4TSM_STR-WAERS sy-vline 
WA_T7GR4TSM_STR-SIF sy-vline      INTO ld_text SEPARATED BY SPACE.

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