Inserting data into a table from multiple tables - sql

Question

How can I insert data into a table from multiple tables where all the tables have a common prefix as their table name
This is the structure of the table and error table generated by the package (DBMS_ERRLOG.CREATE_ERROR_LOG) :
Name Type
----------------------------------------------------------------------------
ACCOUNT_ID VARCHAR2(20)
EFFECTIVE_DTM DATE
ACCOUNT_STATUS VARCHAR2(200)
STATUS_REASON_TXT VARCHAR2(255)
ISVALID NUMBER(1)
Name Type
----------------------------------------------------------------------------
ORA_ERR_NUMBER NUMBER
ORA_ERR_MESG$ VARCHAR2(2000)
ORA_ERR_ROWID$ ROWID
ORA_ERR_OPTYP$ VARCHAR2(2)
ORA_ERR_TAG$ VARCHAR2(2000)
ACCOUNT_ID VARCHAR2(4000)
EFFECTIVE_DTM VARCHAR2(4000)
ACCOUNT_STATUS VARCHAR2(4000)
STATUS_REASON_TXT VARCHAR2(4000)
ISVALID VARCHAR2(4000)

Answer 1

For starting you can select from all your source tables in union/union all queries if you know all the table names. Otherwise you can use the pl/sql block to use dynamic query to do this task for you.
But it would be easier to state if you provide your table structure and few records and some effort done by you as commented by peers in comment section.
Edit
After getting further clarity on the requirement I would suggest to keep all the other columns (basically entries from the base tables) into one single column - we can use CLOB for this purpose.
you can try something like below -
*** considering err log table as -
create table err_log_tab (
ORA_ERR_NUMBER NUMBER,
ORA_ERR_MESG$ VARCHAR2(2000),
ORA_ERR_ROWID$ ROWID,
ORA_ERR_OPTYP$ VARCHAR2(2),
ORA_ERR_TAG$ VARCHAR2(2000),
table_name varchar2(50),
row_data clob)
Below block can be executed to do so -
DECLARE
l_sql VARCHAR2(4000);
l_col_cnt NUMBER := 0;
BEGIN
FOR l_err_tabs IN (SELECT table_name
FROM user_tab_cols
WHERE table_name LIKE 'ERR$_%'
AND column_name IN ('ORA_ERR_NUMBER',
'ORA_ERR_MESG$',
'ORA_ERR_ROWID$',
'ORA_ERR_OPTYP$',
'ORA_ERR_TAG$')
GROUP BY table_name
HAVING COUNT(*) = 5)
LOOP
l_sql := 'insert into err_log_tab select ORA_ERR_NUMBER,ORA_ERR_MESG$,ORA_ERR_ROWID$,ORA_ERR_OPTYP$,ORA_ERR_TAG$,''' ||
substr(l_err_tabs.table_name,
6) || ''' table_name , to_clob(' || chr(10);
FOR l_cols IN (SELECT column_name
FROM user_tab_cols
WHERE table_name = l_err_tabs.table_name
AND column_id > 5
ORDER BY column_id)
LOOP
l_sql := l_sql || CASE
WHEN l_col_cnt = 1 THEN
'||'',''||'
ELSE
''
END || '''"''||' || l_cols.column_name || '||''"''';
l_col_cnt := 1;
END LOOP;
l_sql := l_sql || ') row_data from ' || l_err_tabs.table_name;
--dbms_output.put_line (l_sql);
EXECUTE IMMEDIATE l_sql;
END LOOP;
END;
/
Please correct me if my understanding with question is going in wrong direction.