Dynamically create tables based on the total counts of another table - oracle

Question

I want to be able to create tables based on the total rows in another table.
Let's say I've a table A, and the count is 500K, and so I wanna be able to create 5 tables each of 100K dynamically inside a procedure in oracle.
table A will have counts changing each time, but I would still want to be able to create tables with 100K max, for instance, tomorrow the table A has 550K, I want to be able to create 6 tables with 5 tables having 100k and last one with 50k.
SET SERVEROUTPUT ON
DECLARE
ttl_tables NUMBER;
var_loop NUMBER := 0;
BEGIN
SELECT CAST(COUNT(*)/(500000) AS INT) INTO ttl_tables FROM
px_extract_checks;
DBMS_OUTPUT.PUT_LINE(ttl_tables);
LOOP
var_loop := var_loop + 1;
EXECUTE IMMEDIATE (' || CREATE TABLE ' || 'table' || var_loop || ' ' ||
(Card_Number) || ');
EXIT WHEN var_loop = ttl_tables;
END LOOP;
END;
Something like above.

Answer 1

I have created a small block to help you out using dynamic queries.
You need to use actual column names and little bit changes in the following code as per your requirement:
See inline comments for more information on steps.
BEGIN
-- BEFORE CREATING THE TABLES, NEED TO DROP THE TABLES
FOR T IN (
SELECT
TABLE_NAME
FROM
USER_TABLES
WHERE
TABLE_NAME LIKE 'MY_TABLES_DYNAMIC%'
) LOOP
EXECUTE IMMEDIATE 'DROP TABLE ' || T.TABLE_NAME;
END LOOP;
-- CREATING THE TABLES USING TABLE_A
FOR I IN (
SELECT
CEIL(COUNT(1) / 100000) AS CNT -- DIVIDED THE COUNT OF ROWS BY 100K
FROM
TABLE_A
) LOOP
-- USING CTAS
EXECUTE IMMEDIATE 'CREATE TABLE MY_TABLES_DYNAMIC_'
|| I.CNT
|| ' AS '
|| ' SELECT COL1, COL2, ... FROM'
|| ' (SELECT A.COL1, A.COL2, ...., ROW_NUMBER() OVER (ORDER BY A.PRIMARY_KEY_OF_TABLE_A) RN '
|| ' FROM TABLE_A A)'
|| ' WHERE RN BETWEEN '
|| ( ( I.CNT - 1 ) * 100000 ) + 1
|| ' AND '
|| ( I.CNT * 100000 );
END LOOP;
END;
Cheers!!

Answer 2

Hope this below code will help you for your requirement, you can test it by changing the column names,table names and counts accordingly:
declare
tname_count number:=0;
t_name varchar2(500);
begin
select count(1) into t_count from A;
for k in 1.. t_count
loop
if mod(k,100000)=0 then
tname_count:=tname_count+1;
t_name:='TAB_'||tname_count;
execute immediate 'create table '|| t_name||' (id varchar2(50))';
end if;
end loop;
if floor(t_count/100000)<>0 then
tname_count:=tname_count+1;
t_name:='TAB_'||tname_count;
execute immediate 'create table '|| t_name||' (id varchar2(50))';
end if;
end;