ABAP Select data from SAP table MAM_20_INSTALLED_EQUI into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP MAM_20_INSTALLED_EQUI 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 MAM_20_INSTALLED_EQUI. 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 MAM_20_INSTALLED_EQUI 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_MAM_20_INSTALLED_EQUI TYPE STANDARD TABLE OF MAM_20_INSTALLED_EQUI,
      WA_MAM_20_INSTALLED_EQUI TYPE MAM_20_INSTALLED_EQUI,
      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: <MAM_20_INSTALLED_EQUI> TYPE MAM_20_INSTALLED_EQUI.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_MAM_20_INSTALLED_EQUI.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM MAM_20_INSTALLED_EQUI
  INTO TABLE IT_MAM_20_INSTALLED_EQUI.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM MAM_20_INSTALLED_EQUI
*  INTO TABLE @DATA(IT_MAM_20_INSTALLED_EQUI2).
*--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_MAM_20_INSTALLED_EQUI INDEX 1 INTO DATA(WA_MAM_20_INSTALLED_EQUI2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_MAM_20_INSTALLED_EQUI ASSIGNING <MAM_20_INSTALLED_EQUI>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<MAM_20_INSTALLED_EQUI>-EQUNR = 1.
<MAM_20_INSTALLED_EQUI>-TPLNR = 1.
<MAM_20_INSTALLED_EQUI>-EQTYP = 1.
<MAM_20_INSTALLED_EQUI>-EQART = 1.
<MAM_20_INSTALLED_EQUI>-INVNR = 1.

ENDLOOP.

LOOP AT IT_MAM_20_INSTALLED_EQUI INTO WA_MAM_20_INSTALLED_EQUI.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_MAM_20_INSTALLED_EQUI-GROES, sy-vline,
  WA_MAM_20_INSTALLED_EQUI-BRGEW, sy-vline,
  WA_MAM_20_INSTALLED_EQUI-GEWEI, sy-vline,
  WA_MAM_20_INSTALLED_EQUI-SERGE, sy-vline,
  WA_MAM_20_INSTALLED_EQUI-TYPBZ, sy-vline,
  WA_MAM_20_INSTALLED_EQUI-BAUJJ, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_MAM_20_INSTALLED_EQUI 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_MAM_20_INSTALLED_EQUI 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_MAM_20_INSTALLED_EQUI INTO WA_MAM_20_INSTALLED_EQUI.


*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 EQUNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLNR
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-TPLNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-TPLNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field BAUJJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-BAUJJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-BAUJJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field KMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-KMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-KMATN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field SERNR
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-SERNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-SERNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNDE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-KUNDE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-KUNDE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field IMRC_POINT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-IMRC_POINT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-IMRC_POINT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MGANR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-MGANR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-MGANR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field EMATN
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-EMATN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-EMATN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SUBMT
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-SUBMT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-SUBMT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HEQUI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-HEQUI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-HEQUI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TPLNR, internal->external for field TPLMA
CALL FUNCTION 'CONVERSION_EXIT_TPLNR_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-TPLMA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-TPLMA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-KOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-KOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PROID
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_MAM_20_INSTALLED_EQUI-PROID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_MAM_20_INSTALLED_EQUI-PROID.
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_MAM_20_INSTALLED_EQUI_STR, 
EQUNR TYPE STRING,
TPLNR TYPE STRING,
EQTYP TYPE STRING,
EQART TYPE STRING,
INVNR TYPE STRING,
GROES TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
SERGE TYPE STRING,
TYPBZ TYPE STRING,
BAUJJ TYPE STRING,
BAUMM TYPE STRING,
EQLFN TYPE STRING,
OBJNR TYPE STRING,
KMATN TYPE STRING,
MATNR TYPE STRING,
SERNR TYPE STRING,
WERK TYPE STRING,
LAGER TYPE STRING,
CHARGE TYPE STRING,
KUNDE TYPE STRING,
IMRC_POINT TYPE STRING,
MGANR TYPE STRING,
S_EQUI TYPE STRING,
S_SERIAL TYPE STRING,
S_KONFI TYPE STRING,
S_SALE TYPE STRING,
S_FHM TYPE STRING,
BSTVP TYPE STRING,
EMATN TYPE STRING,
DATBI TYPE STRING,
EQUZN TYPE STRING,
TIMBI TYPE STRING,
DATAB TYPE STRING,
IWERK TYPE STRING,
SUBMT TYPE STRING,
HEQUI TYPE STRING,
INGRP TYPE STRING,
EQLFN_Z TYPE STRING,
WKCTR TYPE STRING,
SPRAS TYPE STRING,
KZLTX TYPE STRING,
SHTXT TYPE STRING,
TPLMA TYPE STRING,
IEQUI TYPE STRING,
IEQUII TYPE STRING,
EINZL TYPE STRING,
POSNR TYPE STRING,
SWERK TYPE STRING,
STORT TYPE STRING,
GSBER TYPE STRING,
KOKRS TYPE STRING,
KOSTL TYPE STRING,
PROID TYPE STRING,
BUKRS TYPE STRING,
HEQUI_SHTXT TYPE STRING,
TPLNR_SHTXT TYPE STRING,
TPLMA_SHTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_MAM_20_INSTALLED_EQUI_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_MAM_20_INSTALLED_EQUI_STR-EQUNR sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-TPLNR sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-EQTYP sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-EQART sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-INVNR sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-GROES sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-BRGEW sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-GEWEI sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-SERGE sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-TYPBZ sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-BAUJJ sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-BAUMM sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-EQLFN sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-OBJNR sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-KMATN sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-MATNR sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-SERNR sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-WERK sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-LAGER sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-CHARGE sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-KUNDE sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-IMRC_POINT sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-MGANR sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-S_EQUI sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-S_SERIAL sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-S_KONFI sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-S_SALE sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-S_FHM sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-BSTVP sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-EMATN sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-DATBI sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-EQUZN sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-TIMBI sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-DATAB sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-IWERK sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-SUBMT sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-HEQUI sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-INGRP sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-EQLFN_Z sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-WKCTR sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-SPRAS sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-KZLTX sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-SHTXT sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-TPLMA sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-IEQUI sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-IEQUII sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-EINZL sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-POSNR sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-SWERK sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-STORT sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-GSBER sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-KOKRS sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-KOSTL sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-PROID sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-BUKRS sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-HEQUI_SHTXT sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-TPLNR_SHTXT sy-vline 
WA_MAM_20_INSTALLED_EQUI_STR-TPLMA_SHTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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