Thanks Christiane,
That solves the Problem.
nevertheless I provide the table and Index definition here.
regards
jph
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create table "XYZ"."READOUT"(
"ROID" INTEGER not null,
"AMID" INTEGER,
"ROWANN" TIMESTAMP,
"WANN" TIMESTAMP,
"WER" INTEGER,
"STATE" CHAR (1) ASCII,
"EVA_RONUM" INTEGER,
"EVA_ROTERM" VARCHAR (20) ASCII,
"EVA_PROTERM" VARCHAR (20) ASCII,
"EVA_USR1" VARCHAR (12) ASCII,
"EMPTY" INTEGER,
"EVA_SYSTIME" VARCHAR (6) ASCII,
"EVA_SYSDATE" VARCHAR (8) ASCII,
"EVA_PROTIME" VARCHAR (6) ASCII,
"EVA_PRODATE" VARCHAR (8) ASCII,
"EVA_ROTIME" VARCHAR (6) ASCII,
"EVA_RODATE" VARCHAR (8) ASCII,
"EXPORTED" CHAR (1) ASCII,
"EXPORT_TS" TIMESTAMP,
"TSERNR" VARCHAR (16) ASCII,
"MSERNR" VARCHAR (20) ASCII,
constraint SYSPRIMARYKEY primary key ("ROID"),
foreign key "FK_READ_REFE_AUTO" ("AMID") references "XYZ"."AUTOMAT" ("AMID") on delete restrict)
sample 5 percent
//
create index "RO_AMID" on "XYZ"."READOUT" ("AMID" ASC)
//
create index "RO_AM_ROWANN_EMPTY" on "XYZ"."READOUT" ("AMID" ASC,"ROWANN" DESC,"EMPTY" ASC)
//
create index "RO_NURSTATE" on "XYZ"."READOUT" ("STATE" ASC)
//
create index "RO_ROWANN" on "XYZ"."READOUT" ("ROWANN" DESC)
//
create index "RO_STATE" on "XYZ"."READOUT" ("AMID" ASC,"STATE" ASC)
//
create index "RO_WANN" on "XYZ"."READOUT" ("WANN" ASC)
//