ABAP Select data from SAP table ESH_L_CRDTMEMREQ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ESH_L_CRDTMEMREQ
*  INTO TABLE @DATA(IT_ESH_L_CRDTMEMREQ2).
*--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_ESH_L_CRDTMEMREQ INDEX 1 INTO DATA(WA_ESH_L_CRDTMEMREQ2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ESH_L_CRDTMEMREQ>-MANDT = 1.
<ESH_L_CRDTMEMREQ>-CREDITMEMOREQUEST = 1.
<ESH_L_CRDTMEMREQ>-BUSINESSPARTNERNAME1 = 1.
<ESH_L_CRDTMEMREQ>-BUSINESSPARTNERNAME2 = 1.
<ESH_L_CRDTMEMREQ>-CREATEDBYUSER = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ESH_L_CRDTMEMREQ-CREDITMEMOREQUESTDATE, sy-vline,
  WA_ESH_L_CRDTMEMREQ-CREDITMEMOREQUESTITEMTEXT, sy-vline,
  WA_ESH_L_CRDTMEMREQ-CREDITMEMOREQUESTTYPE, sy-vline,
  WA_ESH_L_CRDTMEMREQ-DISTRIBUTIONCHANNEL, sy-vline,
  WA_ESH_L_CRDTMEMREQ-DISTRIBUTIONCHANNELNAME, sy-vline,
  WA_ESH_L_CRDTMEMREQ-DIVISIONNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ESH_L_CRDTMEMREQ 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_ESH_L_CRDTMEMREQ 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_ESH_L_CRDTMEMREQ INTO WA_ESH_L_CRDTMEMREQ.


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

*Conversion exit AUART, internal->external for field CREDITMEMOREQUESTTYPE
CALL FUNCTION 'CONVERSION_EXIT_AUART_OUTPUT'
  EXPORTING
    input =                      WA_ESH_L_CRDTMEMREQ-CREDITMEMOREQUESTTYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_L_CRDTMEMREQ-CREDITMEMOREQUESTTYPE.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit ALPHA, internal->external for field SOLDTOPARTY
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ESH_L_CRDTMEMREQ-SOLDTOPARTY
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ESH_L_CRDTMEMREQ-SOLDTOPARTY.
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_ESH_L_CRDTMEMREQ_STR, 
MANDT TYPE STRING,
CREDITMEMOREQUEST TYPE STRING,
BUSINESSPARTNERNAME1 TYPE STRING,
BUSINESSPARTNERNAME2 TYPE STRING,
CREATEDBYUSER TYPE STRING,
CREDITMEMOREQUESTDATE TYPE STRING,
CREDITMEMOREQUESTITEMTEXT TYPE STRING,
CREDITMEMOREQUESTTYPE TYPE STRING,
DISTRIBUTIONCHANNEL TYPE STRING,
DISTRIBUTIONCHANNELNAME TYPE STRING,
DIVISIONNAME TYPE STRING,
MATERIAL TYPE STRING,
MATERIALBYCUSTOMER TYPE STRING,
MATERIALNAME TYPE STRING,
ORGANIZATIONDIVISION TYPE STRING,
OVERALLORDRELTDBILLGSTATUS TYPE STRING,
OVERALLORDRELTDBILLGSTSDESC TYPE STRING,
OVERALLSDDOCUMENTREJECTIONSTS TYPE STRING,
OVERALLSDPROCESSSTATUS TYPE STRING,
OVERALLSDPROCESSSTATUSDESC TYPE STRING,
OVRLSDDOCUMENTREJECTIONSTSDESC TYPE STRING,
PURCHASEORDERBYCUSTOMER TYPE STRING,
SALESDOCUMENTTYPENAME TYPE STRING,
SALESORGANIZATION TYPE STRING,
SALESORGANIZATIONNAME TYPE STRING,
SDDOCUMENTREASON TYPE STRING,
SDDOCUMENTREASONTEXT TYPE STRING,
SOLDTOPARTY TYPE STRING,
TOTALCREDITCHECKSTATUS TYPE STRING,
TOTALCREDITCHECKSTATUSDESC TYPE STRING,
TOTALNETAMOUNT TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
USERDESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ESH_L_CRDTMEMREQ_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_ESH_L_CRDTMEMREQ_STR-MANDT sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-CREDITMEMOREQUEST sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-BUSINESSPARTNERNAME1 sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-BUSINESSPARTNERNAME2 sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-CREATEDBYUSER sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-CREDITMEMOREQUESTDATE sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-CREDITMEMOREQUESTITEMTEXT sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-CREDITMEMOREQUESTTYPE sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-DISTRIBUTIONCHANNEL sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-DISTRIBUTIONCHANNELNAME sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-DIVISIONNAME sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-MATERIAL sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-MATERIALBYCUSTOMER sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-MATERIALNAME sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-ORGANIZATIONDIVISION sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-OVERALLORDRELTDBILLGSTATUS sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-OVERALLORDRELTDBILLGSTSDESC sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-OVERALLSDDOCUMENTREJECTIONSTS sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-OVERALLSDPROCESSSTATUS sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-OVERALLSDPROCESSSTATUSDESC sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-OVRLSDDOCUMENTREJECTIONSTSDESC sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-PURCHASEORDERBYCUSTOMER sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-SALESDOCUMENTTYPENAME sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-SALESORGANIZATION sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-SALESORGANIZATIONNAME sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-SDDOCUMENTREASON sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-SDDOCUMENTREASONTEXT sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-SOLDTOPARTY sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-TOTALCREDITCHECKSTATUS sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-TOTALCREDITCHECKSTATUSDESC sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-TOTALNETAMOUNT sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-TRANSACTIONCURRENCY sy-vline 
WA_ESH_L_CRDTMEMREQ_STR-USERDESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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