ABAP Select data from SAP table TZIN1 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 TZIN1 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 TZIN1. 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 TZIN1 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_TZIN1 TYPE STANDARD TABLE OF TZIN1,
      WA_TZIN1 TYPE TZIN1,
      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: <TZIN1> TYPE TZIN1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TZIN1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TZIN1
  INTO TABLE IT_TZIN1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TZIN1
*  INTO TABLE @DATA(IT_TZIN12).
*--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_TZIN1 INDEX 1 INTO DATA(WA_TZIN12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TZIN1 ASSIGNING <TZIN1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TZIN1>-MANDT = 1.
<TZIN1>-BELNR = 1.
<TZIN1>-OBJNR = 1.
<TZIN1>-KOKRS = 1.
<TZIN1>-BUKRS = 1.

ENDLOOP.

LOOP AT IT_TZIN1 INTO WA_TZIN1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TZIN1-GSBER, sy-vline,
  WA_TZIN1-AWSYS, sy-vline,
  WA_TZIN1-SAPRL, sy-vline,
  WA_TZIN1-CPUDT, sy-vline,
  WA_TZIN1-CPUTM, sy-vline,
  WA_TZIN1-BISDT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TZIN1 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_TZIN1 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_TZIN1 INTO WA_TZIN1.


*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 ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TZIN1-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TZIN1-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AWSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TZIN1-AWSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TZIN1-AWSYS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field STBEL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TZIN1-STBEL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TZIN1-STBEL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TZIN1-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TZIN1-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PSPNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_TZIN1-PSPNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TZIN1-PSPNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field NPLNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TZIN1-NPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TZIN1-NPLNR.
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_TZIN1_STR, 
MANDT TYPE STRING,
BELNR TYPE STRING,
OBJNR TYPE STRING,
KOKRS TYPE STRING,
BUKRS TYPE STRING,
GSBER TYPE STRING,
AWSYS TYPE STRING,
SAPRL TYPE STRING,
CPUDT TYPE STRING,
CPUTM TYPE STRING,
BISDT TYPE STRING,
BUDAT TYPE STRING,
STOKZ TYPE STRING,
STBEL TYPE STRING,
BLART TYPE STRING,
AUFNR TYPE STRING,
AUFPL TYPE STRING,
APLZL TYPE STRING,
PSPNR TYPE STRING,
NPLNR TYPE STRING,
WWERT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TZIN1_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_TZIN1_STR-MANDT sy-vline 
WA_TZIN1_STR-BELNR sy-vline 
WA_TZIN1_STR-OBJNR sy-vline 
WA_TZIN1_STR-KOKRS sy-vline 
WA_TZIN1_STR-BUKRS sy-vline 
WA_TZIN1_STR-GSBER sy-vline 
WA_TZIN1_STR-AWSYS sy-vline 
WA_TZIN1_STR-SAPRL sy-vline 
WA_TZIN1_STR-CPUDT sy-vline 
WA_TZIN1_STR-CPUTM sy-vline 
WA_TZIN1_STR-BISDT sy-vline 
WA_TZIN1_STR-BUDAT sy-vline 
WA_TZIN1_STR-STOKZ sy-vline 
WA_TZIN1_STR-STBEL sy-vline 
WA_TZIN1_STR-BLART sy-vline 
WA_TZIN1_STR-AUFNR sy-vline 
WA_TZIN1_STR-AUFPL sy-vline 
WA_TZIN1_STR-APLZL sy-vline 
WA_TZIN1_STR-PSPNR sy-vline 
WA_TZIN1_STR-NPLNR sy-vline 
WA_TZIN1_STR-WWERT sy-vline      INTO ld_text SEPARATED BY SPACE.

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