Using dymanic table name for running select queries

Question

Hi there. Currently got a problem with performing the following task:
     Perform fulltext search on all tables that have created fulltext indexes in specific schema. Result should look like this:
          <TABLE_NAME1>                <ID_FROM_TABLE>
          <TABLE_NAME1>                <ID_FROM_TABLE>
          <TABLE_NAME2>                <ID_FROM_TABLE>
          <TABLE_NAME2>                <ID_FROM_TABLE>
     At the moment all tables have the same ID column UOI_ID.
What I've tried so far is the following:
PROCEDURE "tuser"."dam.test.db.procedures::textSearch" ( in keyword NVARCHAR(300), out search_results "tuser"."dam.test.db::tuser.procedures.tt_search_results" )
  LANGUAGE SQLSCRIPT
  SQL SECURITY INVOKER
  DEFAULT SCHEMA "tuser"
  AS
BEGIN
  Write your procedure logic
  DECLARE counter Integer := 1;
  DECLARE row_count Integer;
  DECLARE table_name NVARCHAR(300);
  DECLARE schema_name NVARCHAR(300) := 'tuser';
  indexed_tables = SELECT row_number() OVER (ORDER BY "TABLE_NAME") AS ROW_NUMBER, "TABLE_NAME"
       FROM (
            SELECT DISTINCT "TABLE_NAME"
                 FROM "SYS"."FULLTEXT_INDEXES"
                      WHERE "SCHEMA_NAME" = :schema_name
  SELECT COUNT(*) INTO row_count FROM :indexed_tables;
  WHILE counter < row_count + 1 DO
       SELECT '"tuser"."'||"TABLE_NAME"||'"' INTO table_name FROM :indexed_tables WHERE "ROW_NUMBER" = :counter;
       temporary_results = SELECT :table_name AS TABLE_NAME, "OUI_ID" AS ID
            FROM :table_name
                 WHERE contains(*, :keyword, fuzzy(0.5));
       search_results = CE_UNION_ALL(:search_results, :temporary_results);
       counter := counter + 1;
  END WHILE;
END;
At this point it's impossible to perform the:
... FROM :table_name ...
The error is:
Could not create catalog object: scalar type is not allowed
Tried doing it with CE functions.
temporary_table = CE_COLUMN_TABLE(table_name);
The error is:
Dependent object not found: SqlScript; tuser.TABLE_NAME
So the question is: How to dynamically put table name into "FROM ..." statement?

Answer 1

Hello. Thx for response.
I have tried something like
exec 'INSERT INTO "tuser"."dam.test.db::tuser.procedures.search_result" SELECT '''||table_name||''' AS TABLE_NAME, '||column_name||' AS ID, SCORE() AS SCORE  FROM '||table_name||' WHERE contains(*, '''||keyword||''', fuzzy(0.5))';
but here i have "tuser"."dam.test.db::tuser.procedures.search_result" created before the execution. What i really want is to make it as a local variable. Something like:
DECLARE schema_name NVARCHAR(300) := 'tuser';
indexed_tables = SELECT DISTINCT "TABLE_NAME" FROM "SYS"."FULLTEXT_INDEXES" WHERE "SCHEMA_NAME" = :schema_name ;
but i can not transform the top 'exec ...' statement into 'result = SELECT ...' because it always says that it can not pass the scalar value into the 'FROM ...' part.