Startseite Beiträge getaggt mit "THEN"

Schlagwort: THEN

[ABAP] Hilfsvariablen mit LET-Ausdruck definieren

LET

  • Verwendung innerhalb von Operatoren NEW, VALUE, CONV, COND, SWITCH, REDUCE, FOR …
  • es konnen inplace Variablen oder Feldsymbole deklariert werden
  • Variablen, die im LET-Ausdruck definiert wurden k?nnen nur innerhalb des jeweiligen Scopes verwendet werden

Variante 1 (Variablendefinition, CONV)

* Carrier
PARAMETERS: p_carrid TYPE scarr-carrid DEFAULT 'LH'.

START-OF-SELECTION.

* Daten holen
  SELECT * FROM scarr INTO TABLE @DATA(it_carr).

  TRY.
* String zusammenbauen
      DATA(lv_carr_name) = CONV string(
* Hilfsvariablen per LET definieren
* ersten Carrier mit Carrid holen, kann Exception CX_SY_ITAB_LINE_NOT_FOUND werfen
                                        LET <c> = it_carr[ carrid = p_carrid ]
                                            dp  = |: |
* Hilfsvariablen verwenden
                                        IN
                                        |{ <c>-carrname }{ dp }{ <c>-url }| ).

      WRITE: / lv_carr_name.

* Exceptions abfangen
    CATCH cx_root INTO DATA(e_txt).
      WRITE: / e_txt->get_text( ).
  ENDTRY.

Variante 2 (Variablendefinition, COND)

DATA(lv_lang) = COND string(
* Hilfsvariablen per LET definieren
                             LET lang     = cl_abap_syst=>get_language( )
                                 lang_iso = cl_i18n_languages=>sap1_to_sap2( im_lang_sap1 = lang )
* Hilfsvariablen verwenden
                             IN
                             WHEN lang_iso = 'DE' THEN 'Deutsch'
                             WHEN lang_iso = 'EN' THEN 'Englisch'
                             ELSE 'andere Sprache'
                           ).

WRITE: / lv_lang.

Variante 3 (Tabelleneinträge, VALUE)

TYPES: BEGIN OF ty_s_adr,
         id   TYPE i,
         city TYPE string,
       END OF ty_s_adr.

TYPES: ty_it_adr TYPE STANDARD TABLE OF ty_s_adr WITH DEFAULT KEY.

TYPES: BEGIN OF ty_s_person,
         city_id  TYPE i,
         forename TYPE string,
         surename TYPE string,
         age      TYPE i,
       END OF ty_s_person.

TYPES: ty_it_persons TYPE STANDARD TABLE OF ty_s_person WITH DEFAULT KEY.

* Städte
DATA(it_city) = VALUE ty_it_adr(
                                 ( id = 100 city = 'Berlin' )
                                 ( id = 101 city = 'Hamburg' )
                                 ( id = 102 city = 'M?nchen' )
                               ).

* Tabelle mit Personen
DATA(it_persons) = VALUE ty_it_persons(
                                        ( city_id = 100 forename = 'Udo'   surename = 'Lehmann' age = 35 )
                                        ( city_id = 101 forename = 'Erika' surename = 'Müller'  age = 63 )
                                        ( city_id = 102 forename = 'Heinz' surename = 'Schulze' age = 65 )
                                ).

DATA(it_csv) = VALUE stringtab(
* alle Namen durchgehen
                                 FOR <p> IN it_persons INDEX INTO idx
* Hilfsvariablen zusammensetzen
                                   LET name       = |{ <p>-surename }, { <p>-forename }|
                                       city       = it_city[ id = <p>-city_id ]-city
                                       age_string = COND string( WHEN <p>-age > 63 THEN 'Rentner' ELSE 'kein Rentner' )
                                       output     = |{ idx };{ name };{ city };{ age_string }|
* Hilfsvariablen verwenden
                                   IN
* neue Zeile zu Tabelle hinzufügen
                                   ( output )
                               ).

* Anzeige
cl_demo_output=>display( it_csv ).

Variante 4 (CONV)

DATA(lv_i) = CONV i( LET x = 1 IN x ).
WRITE: / lv_i.

Variante 5 (NEW)

DATA(lv_i) = NEW i( LET x = 1 IN x ).
WRITE: / lv_i->*.

[ABAP] Interne Tabellen: Schleifen mit FOR, THEN, WHILE, GROUPS, IN GROUP

Variante 1 (FOR … WHILE)

DATA(it_strings) = VALUE stringtab( ).

it_strings = VALUE #(
* For i = 1 To 10
                      FOR i = 1 WHILE i < 11
                      (
                        |{ i }|
                      )
                    ).

cl_demo_output=>display( it_strings ).

Variante 2 (FOR … WHILE mit Schrittweite) 

                        
DATA(it_strings) = VALUE stringtab( ).

it_strings = VALUE #(
* For i = 1 To 10 Step 2
                      FOR i = 1 THEN i + 2 WHILE i < 11
                      (
                        |{ i }|
                      )
                    ).

cl_demo_output=>display( it_strings ).

Variante 3 (NESTED FOR)

                        
SELECT * FROM sflight INTO TABLE @DATA(it_sflight).
SELECT * FROM spfli INTO TABLE @DATA(it_spfli).

DATA(it_strings) = VALUE stringtab(
* alle Einträge aus sflight ab 01.01.2013
                                    FOR <f> IN it_sflight INDEX INTO idxf WHERE ( fldate >= '20130101' )
* alle Einträge aus spfli mit den Schlüsseln wie in der Ergebnismenge des vorherigen FOR
                                      FOR <c> IN it_spfli INDEX INTO idxc WHERE ( carrid = <f>-carrid AND connid = <f>-connid )
                                      (
* Ausgabe als Stringtab
                                        |{ idxf } \| { idxc } \| { <c>-carrid } \| { <c>-connid } \| { <c>-airpfrom }|
                                      )
                                  ).

cl_demo_output=>display( it_strings ).

Variante 4 (FOR GROUPS, FOR … IN GROUP)

TYPES: BEGIN OF ty_mat,
         matnr TYPE matnr,
         mtart TYPE mtart,
         price TYPE kbetr,
       END OF ty_mat.

TYPES: ty_it_mat TYPE HASHED TABLE OF ty_mat WITH UNIQUE KEY matnr
                                             WITH NON-UNIQUE SORTED KEY key_mtart COMPONENTS mtart.

TYPES: BEGIN OF ty_mat_sum,
         mtart TYPE mtart,
         count TYPE i,
         price TYPE kbetr,
       END OF ty_mat_sum.

TYPES: ty_it_mat_sum TYPE HASHED TABLE OF ty_mat_sum WITH UNIQUE KEY mtart.

* Tabelle mit Materialien
DATA(it_mat) = VALUE ty_it_mat(
                                ( matnr = '1' mtart = 'ROH'  price = '1.56' )
                                ( matnr = '2' mtart = 'ROH'  price = '2.00' )
                                ( matnr = '3' mtart = 'NLAG' price = '3.10' )
                                ( matnr = '4' mtart = 'NLAG' price = '0.40' )
                                ( matnr = '5' mtart = 'NLAG' price = '4.10' )
                                ( matnr = '6' mtart = 'HALB' price = '1.00' )
                                ( matnr = '7' mtart = 'HALB' price = '0.10' )
                              ).

* Tabelle gruppiert nach Materialarten ohne 'HALB' und summierten Preisen
DATA(it_mat_sum) = VALUE ty_it_mat_sum(
                                        FOR GROUPS grp OF <mtart> IN it_mat WHERE ( mtart NE 'HALB' ) GROUP BY ( mtart = <mtart>-mtart size = GROUP SIZE )
                                        (
                                          mtart = grp-mtart " Materialart der Gruppe
                                          count = grp-size  " Anz. Elemente der Gruppe
                                          price = REDUCE #( " Summe über die Elemente der akt. Gruppe bilden
                                                            INIT p = '0.00'
                                                            FOR <m> IN GROUP grp WHERE ( mtart = grp-mtart )
                                                            NEXT p = p + <m>-price
                                                          )
                                        )
                                      ).

cl_demo_output=>display( it_mat_sum ).

Links

[ABAP] OpenSQL: Abhängigkeit (CASE)

Variante 1

SELECT matnr,
       CASE meins
          WHEN 'ST' THEN 'Stück'
          WHEN 'KG' THEN 'Kg'
          ELSE 'andere Einheit'
       END AS meins_desc,
       maktx
  INTO TABLE @DATA(it_mara)
  FROM marav.

cl_demo_output=>display( it_mara ).

Variante 2

SELECT matnr,
       CASE
          WHEN meins = 'ST' THEN 'Stück'
          WHEN meins = 'KG' THEN 'Kg'
          ELSE 'andere Einheit'
       END AS meins_desc,
       maktx
  INTO TABLE @DATA(it_mara)
  FROM marav.

cl_demo_output=>display( it_mara ).

[ABAP] OpenSQL: Summenbildung (SUM) mit Abhängigkeit (CASE)

Variante 1

* Summenbildung, abhängig von Spalte Soll/Haben
DATA: lv_bsid_sum type bsid-dmbtr.

SELECT SUM( CASE shkzg
* Haben
                WHEN 'H' THEN dmbtr
* Soll, negieren für Subtraktion
                WHEN 'S' THEN dmbtr * -1
            END )
  INTO @lv_bsid_sum
  FROM bsid
  WHERE bukrs = '0040'.

IF sy-subrc = 0.
* Summierten Wert ausgeben
  WRITE: / lv_bsid_sum.
ENDIF.

Variante 2

* Summenbildung, abhängig von Spalte Soll/Haben
DATA: lv_bsid_sum type bsid-dmbtr.

SELECT SUM( CASE
* Haben
                WHEN shkzg = 'H' THEN dmbtr
* Soll, negieren für Subtraktion
                WHEN shkzg = 'S' THEN dmbtr * -1
            END )
  INTO @lv_bsid_sum
  FROM bsid
  WHERE bukrs = '0040'.

IF sy-subrc = 0.
* Summierten Wert ausgeben
  WRITE: / lv_bsid_sum.
ENDIF.

[ABAP] REDUCE: Minimum / Maximum in einer internen Tabelle suchen 

* Maximum
DATA(lv_max) = 100.

* Zufallszahlen 1 ... lv_max
DATA(o_rand_i) = cl_abap_random_int=>create( seed = cl_abap_random=>seed( ) min = 1 max = lv_max ).

TYPES: ty_it_rand TYPE STANDARD TABLE OF i WITH DEFAULT KEY.

* Tabelle mit Zufallswerten
DATA(it_rand) = VALUE ty_it_rand( FOR v = 1 WHILE v < 11
                                  ( o_rand_i->get_next( ) ) ).

* Datenausgabe
LOOP AT it_rand ASSIGNING FIELD-SYMBOL(<r>).
  WRITE: / sy-tabix, ':', <r>.
ENDLOOP.

* Minimumsuche
DATA(min) = REDUCE i( INIT m = lv_max
                      FOR <v> IN it_rand
                      NEXT m = COND #( WHEN <v> < m THEN <v> ELSE m ) ).

WRITE: / 'Min:', min.

* Maximumsuche
DATA(max) = REDUCE i( INIT m = 0
                      FOR <v> IN it_rand
                      NEXT m = COND #( WHEN <v> > m THEN <v> ELSE m ) ).

WRITE: / 'Max:', max.

[ABAP] Bedingungen abfragen – SWITCH 

* ersetzt CASE
* Beispiel 1
DATA: lv_flag TYPE boolean VALUE abap_false.
* Abfrage von lv_flag, Rückgabe von String
DATA(lv_status) = SWITCH string( lv_flag WHEN abap_true THEN 'Wahr.' ELSE 'Falsch.' ).
WRITE: lv_status.

* Beispiel 2
DATA(lv_lang) = SWITCH string( sy-langu WHEN 'D' THEN 'DE'
                                        WHEN 'E' THEN 'EN'
                                        ELSE 'XX' ).

WRITE: / lv_lang.