ABAP Select data from SAP table PSMATRUE into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP PSMATRUE 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 PSMATRUE. 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 PSMATRUE 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_PSMATRUE TYPE STANDARD TABLE OF PSMATRUE,
      WA_PSMATRUE TYPE PSMATRUE,
      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: <PSMATRUE> TYPE PSMATRUE.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PSMATRUE
*  INTO TABLE @DATA(IT_PSMATRUE2).
*--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_PSMATRUE INDEX 1 INTO DATA(WA_PSMATRUE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PSMATRUE>-MATERIALNR = 1.
<PSMATRUE>-WERKS = 1.
<PSMATRUE>-LGORT = 1.
<PSMATRUE>-CHARGE = 1.
<PSMATRUE>-BEWART = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PSMATRUE-INSMK, sy-vline,
  WA_PSMATRUE-SOBKZ, sy-vline,
  WA_PSMATRUE-KZVBR, sy-vline,
  WA_PSMATRUE-KONTOLIEFA, sy-vline,
  WA_PSMATRUE-KONTOKUNDE, sy-vline,
  WA_PSMATRUE-KUNDEAUFTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PSMATRUE 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_PSMATRUE 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_PSMATRUE INTO WA_PSMATRUE.


*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 MATN1, internal->external for field MATERIALNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_PSMATRUE-MATERIALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSMATRUE-MATERIALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KONTOLIEFA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSMATRUE-KONTOLIEFA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSMATRUE-KONTOLIEFA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KONTOKUNDE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSMATRUE-KONTOKUNDE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSMATRUE-KONTOKUNDE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNDEAUFTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSMATRUE-KUNDEAUFTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSMATRUE-KUNDEAUFTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ERFME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_PSMATRUE-ERFME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSMATRUE-ERFME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSMATRUE-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSMATRUE-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFTRAGNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSMATRUE-AUFTRAGNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSMATRUE-AUFTRAGNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_PSMATRUE-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSMATRUE-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSMATRUE-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSMATRUE-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSMATRUE-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSMATRUE-ANLN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSMATRUE-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSMATRUE-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field POSID
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_PSMATRUE-POSID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSMATRUE-POSID.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field QPLOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PSMATRUE-QPLOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PSMATRUE-QPLOS.
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_PSMATRUE_STR, 
MATERIALNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
CHARGE TYPE STRING,
BEWART TYPE STRING,
INSMK TYPE STRING,
SOBKZ TYPE STRING,
KZVBR TYPE STRING,
KONTOLIEFA TYPE STRING,
KONTOKUNDE TYPE STRING,
KUNDEAUFTR TYPE STRING,
KUNDEPOS TYPE STRING,
KDEIN TYPE STRING,
SOLLHABEN TYPE STRING,
WAERS TYPE STRING,
DMBTR TYPE STRING,
BEWERTART TYPE STRING,
ERFMG TYPE STRING,
ERFME TYPE STRING,
ENDLIEFER TYPE STRING,
POSITEXT TYPE STRING,
WEMPF TYPE STRING,
ABLAD TYPE STRING,
KOSTL TYPE STRING,
AUFTRAGNR TYPE STRING,
VORNR TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
RSNUM TYPE STRING,
RSPOS TYPE STRING,
RSART TYPE STRING,
KZEAR TYPE STRING,
VFDAT TYPE STRING,
BDTER TYPE STRING,
OBJNR TYPE STRING,
KZEAR_OLD TYPE STRING,
MHDAT TYPE STRING,
KZBEW TYPE STRING,
LGNUM TYPE STRING,
LGTYP TYPE STRING,
LGPLA TYPE STRING,
GRUND TYPE STRING,
PAOBJNR TYPE STRING,
PRCTR TYPE STRING,
POSID TYPE STRING,
APLZL TYPE STRING,
AUFPS TYPE STRING,
GSBER TYPE STRING,
RSHKZ TYPE STRING,
BDMNG TYPE STRING,
ENMNG TYPE STRING,
QPLOS TYPE STRING,
POSNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PSMATRUE_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_PSMATRUE_STR-MATERIALNR sy-vline 
WA_PSMATRUE_STR-WERKS sy-vline 
WA_PSMATRUE_STR-LGORT sy-vline 
WA_PSMATRUE_STR-CHARGE sy-vline 
WA_PSMATRUE_STR-BEWART sy-vline 
WA_PSMATRUE_STR-INSMK sy-vline 
WA_PSMATRUE_STR-SOBKZ sy-vline 
WA_PSMATRUE_STR-KZVBR sy-vline 
WA_PSMATRUE_STR-KONTOLIEFA sy-vline 
WA_PSMATRUE_STR-KONTOKUNDE sy-vline 
WA_PSMATRUE_STR-KUNDEAUFTR sy-vline 
WA_PSMATRUE_STR-KUNDEPOS sy-vline 
WA_PSMATRUE_STR-KDEIN sy-vline 
WA_PSMATRUE_STR-SOLLHABEN sy-vline 
WA_PSMATRUE_STR-WAERS sy-vline 
WA_PSMATRUE_STR-DMBTR sy-vline 
WA_PSMATRUE_STR-BEWERTART sy-vline 
WA_PSMATRUE_STR-ERFMG sy-vline 
WA_PSMATRUE_STR-ERFME sy-vline 
WA_PSMATRUE_STR-ENDLIEFER sy-vline 
WA_PSMATRUE_STR-POSITEXT sy-vline 
WA_PSMATRUE_STR-WEMPF sy-vline 
WA_PSMATRUE_STR-ABLAD sy-vline 
WA_PSMATRUE_STR-KOSTL sy-vline 
WA_PSMATRUE_STR-AUFTRAGNR sy-vline 
WA_PSMATRUE_STR-VORNR sy-vline 
WA_PSMATRUE_STR-ANLN1 sy-vline 
WA_PSMATRUE_STR-ANLN2 sy-vline 
WA_PSMATRUE_STR-RSNUM sy-vline 
WA_PSMATRUE_STR-RSPOS sy-vline 
WA_PSMATRUE_STR-RSART sy-vline 
WA_PSMATRUE_STR-KZEAR sy-vline 
WA_PSMATRUE_STR-VFDAT sy-vline 
WA_PSMATRUE_STR-BDTER sy-vline 
WA_PSMATRUE_STR-OBJNR sy-vline 
WA_PSMATRUE_STR-KZEAR_OLD sy-vline 
WA_PSMATRUE_STR-MHDAT sy-vline 
WA_PSMATRUE_STR-KZBEW sy-vline 
WA_PSMATRUE_STR-LGNUM sy-vline 
WA_PSMATRUE_STR-LGTYP sy-vline 
WA_PSMATRUE_STR-LGPLA sy-vline 
WA_PSMATRUE_STR-GRUND sy-vline 
WA_PSMATRUE_STR-PAOBJNR sy-vline 
WA_PSMATRUE_STR-PRCTR sy-vline 
WA_PSMATRUE_STR-POSID sy-vline 
WA_PSMATRUE_STR-APLZL sy-vline 
WA_PSMATRUE_STR-AUFPS sy-vline 
WA_PSMATRUE_STR-GSBER sy-vline 
WA_PSMATRUE_STR-RSHKZ sy-vline 
WA_PSMATRUE_STR-BDMNG sy-vline 
WA_PSMATRUE_STR-ENMNG sy-vline 
WA_PSMATRUE_STR-QPLOS sy-vline 
WA_PSMATRUE_STR-POSNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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