ABAP Select data from SAP table EGERH into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EGERH
*  INTO TABLE @DATA(IT_EGERH2).
*--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_EGERH INDEX 1 INTO DATA(WA_EGERH2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EGERH-LOGIKNR, sy-vline,
  WA_EGERH-ZWGRUPPE, sy-vline,
  WA_EGERH-EINBDAT, sy-vline,
  WA_EGERH-AUSBDAT, sy-vline,
  WA_EGERH-GERWECHS, sy-vline,
  WA_EGERH-DEVLOC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EGERH 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_EGERH 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_EGERH INTO WA_EGERH.


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

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

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

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

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

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

*Conversion exit PVOLT, internal->external for field P_VOLTAGE
CALL FUNCTION 'CONVERSION_EXIT_PVOLT_OUTPUT'
  EXPORTING
    input =                      WA_EGERH-P_VOLTAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EGERH-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_EGERH-S_VOLTAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EGERH-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_EGERH_STR, 
MANDT TYPE STRING,
EQUNR TYPE STRING,
BIS TYPE STRING,
AB TYPE STRING,
KOMBINAT TYPE STRING,
LOGIKNR TYPE STRING,
ZWGRUPPE TYPE STRING,
EINBDAT TYPE STRING,
AUSBDAT TYPE STRING,
GERWECHS TYPE STRING,
DEVLOC TYPE STRING,
DEVGRP TYPE STRING,
WGRUPPE TYPE STRING,
PPM_METER TYPE STRING,
PRIMWNR1 TYPE STRING,
SEKWNR1 TYPE STRING,
PRIMWNR2 TYPE STRING,
SEKWNR2 TYPE STRING,
LOSSDTGROUP TYPE STRING,
RATING TYPE STRING,
P_VOLTAGE TYPE STRING,
S_VOLTAGE TYPE STRING,
AMS TYPE STRING,
AMCG_CAP_GRP TYPE STRING,
MSG_ATTR_ID TYPE STRING,
CAP_ACT_GRP TYPE STRING,
EINBZEIT TYPE STRING,
AUSBZEIT TYPE STRING,
ZEITZONE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EGERH_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_EGERH_STR-MANDT sy-vline 
WA_EGERH_STR-EQUNR sy-vline 
WA_EGERH_STR-BIS sy-vline 
WA_EGERH_STR-AB sy-vline 
WA_EGERH_STR-KOMBINAT sy-vline 
WA_EGERH_STR-LOGIKNR sy-vline 
WA_EGERH_STR-ZWGRUPPE sy-vline 
WA_EGERH_STR-EINBDAT sy-vline 
WA_EGERH_STR-AUSBDAT sy-vline 
WA_EGERH_STR-GERWECHS sy-vline 
WA_EGERH_STR-DEVLOC sy-vline 
WA_EGERH_STR-DEVGRP sy-vline 
WA_EGERH_STR-WGRUPPE sy-vline 
WA_EGERH_STR-PPM_METER sy-vline 
WA_EGERH_STR-PRIMWNR1 sy-vline 
WA_EGERH_STR-SEKWNR1 sy-vline 
WA_EGERH_STR-PRIMWNR2 sy-vline 
WA_EGERH_STR-SEKWNR2 sy-vline 
WA_EGERH_STR-LOSSDTGROUP sy-vline 
WA_EGERH_STR-RATING sy-vline 
WA_EGERH_STR-P_VOLTAGE sy-vline 
WA_EGERH_STR-S_VOLTAGE sy-vline 
WA_EGERH_STR-AMS sy-vline 
WA_EGERH_STR-AMCG_CAP_GRP sy-vline 
WA_EGERH_STR-MSG_ATTR_ID sy-vline 
WA_EGERH_STR-CAP_ACT_GRP sy-vline 
WA_EGERH_STR-EINBZEIT sy-vline 
WA_EGERH_STR-AUSBZEIT sy-vline 
WA_EGERH_STR-ZEITZONE sy-vline      INTO ld_text SEPARATED BY SPACE.

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