ABAP Select data from SAP table PES_IRPF_RETENIDO_LINE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PES_IRPF_RETENIDO_LINE
*  INTO TABLE @DATA(IT_PES_IRPF_RETENIDO_LINE2).
*--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_PES_IRPF_RETENIDO_LINE INDEX 1 INTO DATA(WA_PES_IRPF_RETENIDO_LINE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PES_IRPF_RETENIDO_LINE>-NIF = 1.
<PES_IRPF_RETENIDO_LINE>-APELLIDOSNOMBRE = 1.
<PES_IRPF_RETENIDO_LINE>-ANONACIMIENTO = 1.
<PES_IRPF_RETENIDO_LINE>-COMUNIDADAUTONOMA = 1.
<PES_IRPF_RETENIDO_LINE>-RESIDENCIACEUTAMELILLA = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PES_IRPF_RETENIDO_LINE-SITUACIONFAMILIAR, sy-vline,
  WA_PES_IRPF_RETENIDO_LINE-SITUACION1, sy-vline,
  WA_PES_IRPF_RETENIDO_LINE-SITUACION2, sy-vline,
  WA_PES_IRPF_RETENIDO_LINE-NIFCONYUGE, sy-vline,
  WA_PES_IRPF_RETENIDO_LINE-SITUACION3, sy-vline,
  WA_PES_IRPF_RETENIDO_LINE-DISCAPACIDAD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PES_IRPF_RETENIDO_LINE 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_PES_IRPF_RETENIDO_LINE 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_PES_IRPF_RETENIDO_LINE INTO WA_PES_IRPF_RETENIDO_LINE.


*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 GJAHR, internal->external for field ANONACIMIENTO
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_PES_IRPF_RETENIDO_LINE-ANONACIMIENTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PES_IRPF_RETENIDO_LINE-ANONACIMIENTO.
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_PES_IRPF_RETENIDO_LINE_STR, 
NIF TYPE STRING,
APELLIDOSNOMBRE TYPE STRING,
ANONACIMIENTO TYPE STRING,
COMUNIDADAUTONOMA TYPE STRING,
RESIDENCIACEUTAMELILLA TYPE STRING,
SITUACIONFAMILIAR TYPE STRING,
SITUACION1 TYPE STRING,
SITUACION2 TYPE STRING,
NIFCONYUGE TYPE STRING,
SITUACION3 TYPE STRING,
DISCAPACIDAD TYPE STRING,
GRADO1 TYPE STRING,
MOVILIDADREDUCIDA TYPE STRING,
GRADO2 TYPE STRING,
SITUACIONLABORAL TYPE STRING,
TRABAJADORACTIVO TYPE STRING,
CONTRATO TYPE STRING,
MOVILIDADGEOGRAFICA TYPE STRING,
PROLONGACIONLABORAL TYPE STRING,
CAMBIORESIDENCIA TYPE STRING,
PENSIONISTA TYPE STRING,
DESEMPLEADO TYPE STRING,
OTRASITUACION TYPE STRING,
DESCENDIENTE TYPE STRING,
ASCENDIENTE TYPE STRING,
RETRIBANUALES TYPE STRING,
REDUCCIONES TYPE STRING,
REDUCCIONES2 TYPE STRING,
GASTOSANUALES TYPE STRING,
PENSIONCOMPENSATORIA TYPE STRING,
ANUALIDADESHIJOS TYPE STRING,
RDTOSOBTENIDOSCEUTAMELILLA TYPE STRING,
PAGOPRESTAMOSVIVIENDA TYPE STRING,
REGULARIZACION TYPE STRING,
CAUSA TYPE STRING,
RETRIBSATISFECHAS TYPE STRING,
RETENCIONPRACTICADA TYPE STRING,
RETRIBANUALESINICIALES TYPE STRING,
RETENCIONANUALINICIAL TYPE STRING,
BASERETENCION TYPE STRING,
TIPORETENCION TYPE STRING,
RESIDENCIAINICIALCEUTAMELILLA TYPE STRING,
MINIMOPERSONALFAMILIARINICIAL TYPE STRING,
MINORACIONPRESTAMOSVIVIENDA TYPE STRING,
IMPORTEMINORACION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PES_IRPF_RETENIDO_LINE_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_PES_IRPF_RETENIDO_LINE_STR-NIF sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-APELLIDOSNOMBRE sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-ANONACIMIENTO sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-COMUNIDADAUTONOMA sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-RESIDENCIACEUTAMELILLA sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-SITUACIONFAMILIAR sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-SITUACION1 sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-SITUACION2 sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-NIFCONYUGE sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-SITUACION3 sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-DISCAPACIDAD sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-GRADO1 sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-MOVILIDADREDUCIDA sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-GRADO2 sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-SITUACIONLABORAL sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-TRABAJADORACTIVO sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-CONTRATO sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-MOVILIDADGEOGRAFICA sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-PROLONGACIONLABORAL sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-CAMBIORESIDENCIA sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-PENSIONISTA sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-DESEMPLEADO sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-OTRASITUACION sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-DESCENDIENTE sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-ASCENDIENTE sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-RETRIBANUALES sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-REDUCCIONES sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-REDUCCIONES2 sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-GASTOSANUALES sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-PENSIONCOMPENSATORIA sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-ANUALIDADESHIJOS sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-RDTOSOBTENIDOSCEUTAMELILLA sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-PAGOPRESTAMOSVIVIENDA sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-REGULARIZACION sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-CAUSA sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-RETRIBSATISFECHAS sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-RETENCIONPRACTICADA sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-RETRIBANUALESINICIALES sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-RETENCIONANUALINICIAL sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-BASERETENCION sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-TIPORETENCION sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-RESIDENCIAINICIALCEUTAMELILLA sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-MINIMOPERSONALFAMILIARINICIAL sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-MINORACIONPRESTAMOSVIVIENDA sy-vline 
WA_PES_IRPF_RETENIDO_LINE_STR-IMPORTEMINORACION sy-vline      INTO ld_text SEPARATED BY SPACE.

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