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mehul bhakta
 asked on

for loop using a date to create a table based on that date

hello,

I'm trying to use a for loop to eventually cycle through a date range to create a table based on a given day I figured out how to do a loop to insert data but I really want to create a table directly from the source table eliminating the insert function, for I'm just interested in getting the for loop to pick up '02-JAN-2016'. however when I try to run my code I get this error:
ORA-00904; "X"."FULL_DATE": invalid identifier
ORA-06512: at line 11

I used DBMS_OUTPUT.PUT_LINE(x.full_date) to display how the date would look but it didn't help.

I'm running PL/SQL developer v11 running 11g and here is my code.

declare      
         
begin
 
for x in (select   a.full_date
          from     dim_t_date a
          --where    a.full_date between to_date('01-Jan-2016','DD-MM-YYYY') and to_date('04-Jan-2016','DD-MM-YYYY')
          where    a.full_date = to_date('02-Jan-2016','DD-MM-YYYY')
          order by a.full_date) loop

execute immediate
'create table snap_product_data compress parallel 16 pctfree 0 as
 select a.*
   from base a
  where a.base_type = ''S''
    and x.full_date = a.from_date
    and a.product_status is not null';
commit;

execute immediate
'create table load_product_data compress parallel 16 pctfree 0 as
    select a.from_date,
           nvl(to_date, ''31-DEC-9999'') to_date,
           a.premise_id,
           a.account_reference,
           case when a.key_type in (''1'',''15'') then ''E''
                when a.key_type in (''2'',''14'') then ''G''
                when a.key_type in (''67'') then ''F'' else null end product_code,
           trunc(a.start_date) start_date,
           trunc(a.end_date) end_date,
           product_status
      from (select a.*,
                   rank() over(partition by premise_id, account_reference order by case_statement asc) ranked
              from (select a.*,
                           case when a.to_date is null and a.end_date is null then 1
                                when a.to_date is not null and a.end_date is null then 2
                                when a.to_date is null and a.end_date is not null then 3
                                when a.to_date is not null and a.end_date is not null then 4 end case_statement
                      from snap_product_data1 a) a) a
     where ranked = 1';
 commit;

DBMS_OUTPUT.PUT_LINE(x.full_date);

 end loop;

end;
/

Thanks
SQL

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Last Comment
mehul bhakta

8/22/2022 - Mon
Helena Marková

I would try
to_date('02-01-2016','DD-MM-YYYY') instead of to_date('02-Jan-2016','DD-MM-YYYY')
Ganesh Gurudu

You should use to_date('02-Jan-2016','DD-MON-YYYY')
This will work for sure
Helena Marková

I think that main problem is here 'create table snap_product_data compress parallel 16 pctfree 0 as
  select a.*
    from base a
   where a.base_type = ''S''
     and x.full_date = a.from_date
     and a.product_status is not null'
It ought to be something like this 'create table snap_product_data compress parallel 16 pctfree 0 as
  select a.*
    from base a
   where a.base_type = ''S''
     and ''||x.full_date||''= a.from_date
     and a.product_status is not null'
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rwheeler23
mehul bhakta

ASKER
hi all,

if I write
execute immediate
'create table snap_product_data1 compress parallel 16 nologging pctfree 0 as
 select a.*
   from base a
  where a.base_type = ''S''
    and to_date(''02-Jan-2016'',''DD-MON-YYYY'') = a.from_date
    and a.product_status is not null';
commit;

it works but its not using the for loop date

then if I try this:
execute immediate
'create table snap_product_data1 compress parallel 16 nologging pctfree 0 as
 select a.*
   from base a
  where a.base_type = ''S''
    and to_date(x.full_date,''DD-MON-YYYY'') = a.from_date
    and a.product_status is not null';
commit;

I get the original error
Helena Marková

Please, look at my last comment.
mehul bhakta

ASKER
@Helena Markova

I just tried this and I get an error:
ORA-00936: missing expression
ORA-06512: at line 11
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Helena Marková

I would try this:
 'create table snap_product_data as
   select a.*
     from base a
    where a.base_type = ''S''
      and ''||x.full_date||''= a.from_date
      and a.product_status is not null compress parallel 16 pctfree 0'

Base is a table ? (... from base a ...)
mehul bhakta

ASKER
yes "base" is a table, I want to extract all the data out of the "base" table for a day using a for loop.

is your last method trying to create an empty table??
ASKER CERTIFIED SOLUTION
johnsone

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mehul bhakta

ASKER
@johnsone, wow that worked and thanks for the advice too.

I saw on another site that somebody did this:
Where to_char(X.Datetime, ''yyyy'') = '''|| idx||'''';

but wasn't sure why I'd need to to_char a date when it's in a format that should be able to link back to the source table.

THANK YOU ALL

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mehul bhakta

ASKER
a big thank you goes to johnsone for their help :)