ABAP Select data from SAP table ISU_EGERR_M40 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ISU_EGERR_M40 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 ISU_EGERR_M40. 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 ISU_EGERR_M40 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_ISU_EGERR_M40 TYPE STANDARD TABLE OF ISU_EGERR_M40,
      WA_ISU_EGERR_M40 TYPE ISU_EGERR_M40,
      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: <ISU_EGERR_M40> TYPE ISU_EGERR_M40.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ISU_EGERR_M40.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ISU_EGERR_M40
  INTO TABLE IT_ISU_EGERR_M40.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ISU_EGERR_M40
*  INTO TABLE @DATA(IT_ISU_EGERR_M402).
*--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_ISU_EGERR_M40 INDEX 1 INTO DATA(WA_ISU_EGERR_M402).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ISU_EGERR_M40 ASSIGNING <ISU_EGERR_M40>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ISU_EGERR_M40>-MANDT = 1.
<ISU_EGERR_M40>-EQUNR = 1.
<ISU_EGERR_M40>-BIS = 1.
<ISU_EGERR_M40>-AB = 1.
<ISU_EGERR_M40>-LOGIKNR = 1.

ENDLOOP.

LOOP AT IT_ISU_EGERR_M40 INTO WA_ISU_EGERR_M40.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ISU_EGERR_M40-ZWGRUPPE, sy-vline,
  WA_ISU_EGERR_M40-WGRUPPE, sy-vline,
  WA_ISU_EGERR_M40-PRIMWNR1, sy-vline,
  WA_ISU_EGERR_M40-SEKWNR1, sy-vline,
  WA_ISU_EGERR_M40-PRIMWNR2, sy-vline,
  WA_ISU_EGERR_M40-SEKWNR2, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ISU_EGERR_M40 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_ISU_EGERR_M40 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_ISU_EGERR_M40 INTO WA_ISU_EGERR_M40.


*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_ISU_EGERR_M40-EQUNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EGERR_M40-EQUNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ZWGRUPPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_EGERR_M40-ZWGRUPPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EGERR_M40-ZWGRUPPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field WGRUPPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_EGERR_M40-WGRUPPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EGERR_M40-WGRUPPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOMGRP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_EGERR_M40-KOMGRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EGERR_M40-KOMGRP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_ISU_EGERR_M40-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EGERR_M40-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GERNR, internal->external for field GERAET
CALL FUNCTION 'CONVERSION_EXIT_GERNR_OUTPUT'
  EXPORTING
    input =                      WA_ISU_EGERR_M40-GERAET
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EGERR_M40-GERAET.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EAGRUPPE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_EGERR_M40-EAGRUPPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EGERR_M40-EAGRUPPE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DEVGRP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ISU_EGERR_M40-DEVGRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EGERR_M40-DEVGRP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit RAT11, internal->external for field RATING
CALL FUNCTION 'CONVERSION_EXIT_RAT11_OUTPUT'
  EXPORTING
    input =                      WA_ISU_EGERR_M40-RATING
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EGERR_M40-RATING.
WRITE:/ 'New Value:', ld_input.

*Conversion exit PVOLT, internal->external for field P_VOLTAGE
CALL FUNCTION 'CONVERSION_EXIT_PVOLT_OUTPUT'
  EXPORTING
    input =                      WA_ISU_EGERR_M40-P_VOLTAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EGERR_M40-P_VOLTAGE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit SVOLT, internal->external for field S_VOLTAGE
CALL FUNCTION 'CONVERSION_EXIT_SVOLT_OUTPUT'
  EXPORTING
    input =                      WA_ISU_EGERR_M40-S_VOLTAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ISU_EGERR_M40-S_VOLTAGE.
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_ISU_EGERR_M40_STR, 
MANDT TYPE STRING,
EQUNR TYPE STRING,
BIS TYPE STRING,
AB TYPE STRING,
LOGIKNR TYPE STRING,
ZWGRUPPE TYPE STRING,
WGRUPPE TYPE STRING,
PRIMWNR1 TYPE STRING,
SEKWNR1 TYPE STRING,
PRIMWNR2 TYPE STRING,
SEKWNR2 TYPE STRING,
KOMGRP TYPE STRING,
MESSDRCK TYPE STRING,
UEBERVER TYPE STRING,
ZSPANNS TYPE STRING,
ZSTROMS TYPE STRING,
ZSPANNP TYPE STRING,
ZSTROMP TYPE STRING,
MATNR TYPE STRING,
GERAET TYPE STRING,
ERDAT TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AENAM TYPE STRING,
KOMBINAT TYPE STRING,
SPARTE TYPE STRING,
EAGRUPPE TYPE STRING,
UMBAUDAT TYPE STRING,
UMBAUGR TYPE STRING,
EINBDAT TYPE STRING,
AUSBDAT TYPE STRING,
DEVGRP TYPE STRING,
SERVICE_PROV TYPE STRING,
EGERR_INFO TYPE STRING,
PPM_METER TYPE STRING,
BEGRU TYPE STRING,
LOSSDTGROUP TYPE STRING,
RATING TYPE STRING,
P_VOLTAGE TYPE STRING,
S_VOLTAGE TYPE STRING,
AMS TYPE STRING,
AMCG_CAP_GRP TYPE STRING,
UII TYPE STRING,
MSG_ATTR_ID TYPE STRING,
CAP_ACT_GRP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ISU_EGERR_M40_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_ISU_EGERR_M40_STR-MANDT sy-vline 
WA_ISU_EGERR_M40_STR-EQUNR sy-vline 
WA_ISU_EGERR_M40_STR-BIS sy-vline 
WA_ISU_EGERR_M40_STR-AB sy-vline 
WA_ISU_EGERR_M40_STR-LOGIKNR sy-vline 
WA_ISU_EGERR_M40_STR-ZWGRUPPE sy-vline 
WA_ISU_EGERR_M40_STR-WGRUPPE sy-vline 
WA_ISU_EGERR_M40_STR-PRIMWNR1 sy-vline 
WA_ISU_EGERR_M40_STR-SEKWNR1 sy-vline 
WA_ISU_EGERR_M40_STR-PRIMWNR2 sy-vline 
WA_ISU_EGERR_M40_STR-SEKWNR2 sy-vline 
WA_ISU_EGERR_M40_STR-KOMGRP sy-vline 
WA_ISU_EGERR_M40_STR-MESSDRCK sy-vline 
WA_ISU_EGERR_M40_STR-UEBERVER sy-vline 
WA_ISU_EGERR_M40_STR-ZSPANNS sy-vline 
WA_ISU_EGERR_M40_STR-ZSTROMS sy-vline 
WA_ISU_EGERR_M40_STR-ZSPANNP sy-vline 
WA_ISU_EGERR_M40_STR-ZSTROMP sy-vline 
WA_ISU_EGERR_M40_STR-MATNR sy-vline 
WA_ISU_EGERR_M40_STR-GERAET sy-vline 
WA_ISU_EGERR_M40_STR-ERDAT sy-vline 
WA_ISU_EGERR_M40_STR-ERNAM sy-vline 
WA_ISU_EGERR_M40_STR-AEDAT sy-vline 
WA_ISU_EGERR_M40_STR-AENAM sy-vline 
WA_ISU_EGERR_M40_STR-KOMBINAT sy-vline 
WA_ISU_EGERR_M40_STR-SPARTE sy-vline 
WA_ISU_EGERR_M40_STR-EAGRUPPE sy-vline 
WA_ISU_EGERR_M40_STR-UMBAUDAT sy-vline 
WA_ISU_EGERR_M40_STR-UMBAUGR sy-vline 
WA_ISU_EGERR_M40_STR-EINBDAT sy-vline 
WA_ISU_EGERR_M40_STR-AUSBDAT sy-vline 
WA_ISU_EGERR_M40_STR-DEVGRP sy-vline 
WA_ISU_EGERR_M40_STR-SERVICE_PROV sy-vline 
WA_ISU_EGERR_M40_STR-EGERR_INFO sy-vline 
WA_ISU_EGERR_M40_STR-PPM_METER sy-vline 
WA_ISU_EGERR_M40_STR-BEGRU sy-vline 
WA_ISU_EGERR_M40_STR-LOSSDTGROUP sy-vline 
WA_ISU_EGERR_M40_STR-RATING sy-vline 
WA_ISU_EGERR_M40_STR-P_VOLTAGE sy-vline 
WA_ISU_EGERR_M40_STR-S_VOLTAGE sy-vline 
WA_ISU_EGERR_M40_STR-AMS sy-vline 
WA_ISU_EGERR_M40_STR-AMCG_CAP_GRP sy-vline 
WA_ISU_EGERR_M40_STR-UII sy-vline 
WA_ISU_EGERR_M40_STR-MSG_ATTR_ID sy-vline 
WA_ISU_EGERR_M40_STR-CAP_ACT_GRP sy-vline      INTO ld_text SEPARATED BY SPACE.

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