Deleting from multiple table using hsql

I am having the following code which runs fine with mysql. But the sql statement fails for hsql (hipersonic database). Can you please give
some pointershow the statement should be for hsql
================CODE====================
import org.springframework.jdbc.core.JdbcTemplate
def statement = "delete a, ac, ace from Alarm a, AlarmCause ac, AlarmCauseElement ace where a.timeStamp <= ? and a.id=ac.alarm_id and
ac.id=ace.cause_id"
JdbcTemplate.
int rows = jdbcTemplate.update(statement, 1000000000) // I just added 1000000000 as sample date
===============ERROR=====================
PreparedStatementCallback; bad SQL grammar [delete a, ac, ace from Alarm a, AlarmCause ac, AlarmCauseElement ace where a.timeStamp <= ? and
a.id=ac.alarm_id and ac.id=ace.cause_id]; nested exception is java.sql.SQLException: Unexpected token A, requires FROM in statement [delete a,
ac, ace from Alarm a, AlarmCause ac, AlarmCauseElement ace where a.timeStamp <= ? and a.id=ac.alarm_id and ac.id=ace.cause_id]

2. Explain what "does not work" means exactly.Reading between the lines the OP is trying to remove rows from three different tables. Perhaps the following from the original post really does work in MySQL?
delete a, ac, ace from Alarm a, AlarmCause ac, AlarmCauseElement ace where a.timeStamp <= ? and a.id=ac.alarm_id and ac.id=ace.cause_idHowever I doubt you can do join deletes in HSQL. So he will probably need to split it into multiple deletes based upon subqueries. Something like:
delete from AlarmCauseElement where cause_id in ( select ac.id from Alarm a left join AlarmCause ac on ac.alarm_id = a.id where a.timestamp <= ?);
delete from AlarmCause where alarm_id in (select id from Alarm where timestamp <= ?);
delete from Alarm where timestamp <= ?;(None of the above is tested).
Edited by: dcminter on 28-Oct-2009 10:00

Similar Messages

Create Trigger to Delete from multiple tables

Hello:
I'm trying to write a trigger which will allow me to delete from multiple records. I have two tables where the record for the same client_id needs to be deleted.
Is it possible to do this? I started writing some code and this is what I have so far:
create or replace trigger app_t1
before delete on <table1> ?? -
for each row
begin
delete from client where clientid = :new.clientid;
delete from key where pk = :newclientid;
end;I'm stuck on the line where I have "before delete on" where I'm supposed to provide a table name. I can only use one table and I need to delete from two.
This trigger is supposed to be used within APEX. In APEX, fields are designated as :P1_clientid where P1 references page 1 of the application. Yet, :P1_clientid is set to the field clientid in the table.
So when I write my trigger, I'm not sure how I'm supposed to set my variables.
Can someone help?
I'm also going to post this into the APEX forum.
Thanks.

It's not clear to me if you are just trying to keep two tables in syn or whether you are trying to achieve something else.
A couple of points though:
- In delete database triggers the :new attributes are NULL. You probably mean to use the :old attributes.
- Is there some relationship between the two tables? If so, setting the foreign key to CASCADE DELETE might do the trick for you.
- Another option - better than a database trigger in my opinion - is to just code a procedure that deletes from both tables and call that one from APEX.
Regards,
Rob.

Deleting from multiple tables

I have a master table and a detail table. I need to delete a set of records from both the master and detail tables based on a criteria. Now if I delete from one table then I will not know which records I have to delete from the other table. So the records needs to be deleted from both the tables using the criteria. My SQL statement to select the records is
<<
select *
FROM TL_RATE A, TL_RATE_DETAIL B
WHERE A.CARRIER_ID = B.CARRIER_ID
AND A.TARIFF_CLASS_ID = B.TARIFF_CLASS_ID
AND A.LANE_ID = B.LANE_ID
AND A.SERVICE_COM_ID = B.SERVICE_COM_ID
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AND DATE_INVALID < SYSDATE-365;
>>
Thanks

You don't show what table DATE_INVALID is in. However, you should just delete the matching rows from the OTHER table first then that table. This is very slightly different from the rows returned by your query since your query is an inner join. In other words, you're excluding rows that might exist in one table but not the other. Assuming DATE_INVALID is in TL_RATE ...
delete tl_rate_detail
where (CARRIER_ID, TARIFF_CLASS_ID, LANE_ID, SERVICE_COM_ID, EFFECTIVE) in (
select CARRIER_ID, TARIFF_CLASS_ID, LANE_ID, SERVICE_COM_ID, EFFECTIVE
from tl_rate
where date_invalid < sysdate - 365)
delete tl_rate
where date_invalid < sysdate - 365
/Richard

Deleting from multiple tables where few tables have same column name

Hi,
I am new to PL/SQL and need some help. I need to delete data older then X years from some 35 odd tables in my schema and out of those tables 25 tables have same column name on which i can have my "where" clause and rest 10 table have different table names. I am doing something like this :
declare
table_list UTL_FILE.FILE_TYPE;
string_line VARCHAR2(1000);
tables_count number:=0;
table_name VARCHAR2(400);
column_name VARCHAR2(400);
BEGIN
table_list := UTL_FILE.FOPEN('ORALOAD','test7.txt','R');
DBMS_OUTPUT.PUT_LINE(table_list);
LOOP
UTL_FILE.GET_LINE(table_list,string_line);
table_name := substr(string_line,1, instr(string_line,'|')-1);
column_name := substr(string_line, instr(string_line,'|')+1);
DBMS_OUTPUT.PUT_LINE(table_name);
DBMS_OUTPUT.PUT_LINE(column_name);
IF column_name = 'SUBMISSION_TIME' THEN
delete from :table_name where to_date(:column_name)<(sysdate-(365*7));
ELSE
delete from || table_name || where ( || to_date(column_name) || ) <(sysdate-(365*7));
END IF;
END LOOP;
EXCEPTION
WHEN NO_DATA_FOUND THEN
UTL_FILE.FCLOSE(table_list);
DBMS_OUTPUT.PUT_LINE('Number of Tables processed is : ' || tables_count);
UTL_FILE.FCLOSE(table_list);
END;
WHERE the text file "text7.txt" contains list of table name and column names separated by a pipe line. But when I execute the above proc it gives error "invalid table name".
Can something like this be done or is there any other way to execute this task of deletion from 35 tables.
Thanks.

Thanks for replies. I don't know what I am doing wrong but still not getting this damn thing work...This is the proc i am running now :
declare
table_list UTL_FILE.FILE_TYPE;
string_line VARCHAR2(1000);
tables_count number:=0;
table_name VARCHAR2(4000);
column_name VARCHAR2(4000);
code_text VARCHAR2(2000);
BEGIN
table_list := UTL_FILE.FOPEN('ORALOAD','test7.txt','R');
LOOP
UTL_FILE.GET_LINE(table_list,string_line);
table_name := substr(string_line,1, instr(string_line,'|')-1);
column_name := substr(string_line, instr(string_line,'|')+1);
IF column_name = 'SUBMISSION_TIME' THEN
DBMS_OUTPUT.PUT_LINE('do nothing');
ELSE
code_text:= 'begin delete from'|| (table_name) ||'where to_date' || (column_name) || '<(sysdate-(365*7))';
Execute Immediate code_text;
END IF;
END LOOP;
EXCEPTION
WHEN NO_DATA_FOUND THEN
UTL_FILE.FCLOSE(table_list);
DBMS_OUTPUT.PUT_LINE('Number of Tables processed is : ' || tables_count);
UTL_FILE.FCLOSE(table_list);
END;
But it gives following error :
" ORA-06550: line 1, column 51:
PL/SQL: ORA-00933: SQL command not properly ended
ORA-06550: line 1, column 7:
PL/SQL: SQL Statement ignored
ORA-06550: line 1, column 68:
PLS-00103: Encountered the symbol "end-of-file" when expecting one of the following:
ORA-06512: at line 22 "

Deletion from multiple tables

Hi,
I am having three tables
Payment (Parent)
Header (Child)
Items (Grand Child)
one payment can have multiple header and the header can have multiple item in it.
P
H H -- level 1
I I I I -- level 2
e.g one payment is having 2 headers and each header is having 2 items in it.
I need to delete the item table first then header table then payment table.
Condition for deletion. There is field(flag) in item table which decides when to delete record. I need to delete record when all the item records flag value is 2.
How to check for all items flag value?
P1
H1 H2
I1 I2 I3 I4
2 1 1 1
P1
H1 H2
I1 I2 I3 I 4
1 1 2 2
Since if we miss any check at level 1 or level 2 We will be having Orphan records in the database.
First case(Level 2 check is missed)then
I1 -> H1 -> P1 deleted
and we have H2,I2,I3,I4 Orphans
Second Case (Level 1 Check is missed)then
I3,I4 -> H2 -> P1 deleted
and we have H1,I1,I2 as orphans.
Please help how to check the flag value of each item. These table are related through primary and foreign keys.
Thanks in advance
Edited by: anu2 on Oct 20, 2009 12:04 AM

Double negation coming up again...
You can identify the parents that are eligable for deletion as follows:
select p.*
from Payment p
where not exists
      (select 'x'
       from Header h
       where h.FK = p.PK
         and not exists
              (select 'x'
               from Items i
               where i.FK = h.PK
                 and i.status != 2))And then use the resultset of above query to:
- delete the grandchildren of these parents first,
- and then delete the children of these parents,
- and then delete the parents.
Maybe this helps.
Edited by: Toon Koppelaars on Oct 20, 2009 9:19 AM

Delete from multiple tables

Hello guys,
Can somebody please help me. I want to delete this one transaction from all the below tables in my testing environment. Can somebody please help me with a script to do that? So basically I want a delete statement for the same select statement I have below.
select distinct b.*
from ra_customer_trx_all a,
     ra_customer_trx_lines_all b,
     ra_cust_trx_line_salesreps_all c,
     ra_cust_trx_line_gl_dist_all d,
     ar_payment_schedules_all e
where a.CUSTOMER_TRX_ID = b.CUSTOMER_TRX_ID
and b.CUSTOMER_TRX_ID = c.CUSTOMER_TRX_ID
and c.CUSTOMER_TRX_ID = d.CUSTOMER_TRX_ID
and d.CUSTOMER_TRX_ID = e.CUSTOMER_TRX_ID
and b.CUSTOMER_TRX_LINE_ID = d.CUSTOMER_TRX_LINE_ID
and a.customer_trx_id = 1328 Thanking you in advance

If you are checking to see if that ID exists in all 5 tables then
DECLARE
v_trx_id   ra_customer_trx_all.CUSTOMER_TRX_ID%TYPE;
BEGIN
SELECT DISTINCT b.CUSTOMER_TRX_ID
    INTO v_trx_id
    FROM ra_customer_trx_all A,
         ra_customer_trx_lines_all b,
         ra_cust_trx_line_salesreps_all c,
         ra_cust_trx_line_gl_dist_all d,
         ar_payment_schedules_all E
   WHERE A.CUSTOMER_TRX_ID = b.CUSTOMER_TRX_ID
     AND b.CUSTOMER_TRX_ID = c.CUSTOMER_TRX_ID
     AND c.CUSTOMER_TRX_ID = d.CUSTOMER_TRX_ID
     AND d.CUSTOMER_TRX_ID = E.CUSTOMER_TRX_ID
     AND b.CUSTOMER_TRX_LINE_ID = d.CUSTOMER_TRX_LINE_ID
     AND A.customer_trx_id = 1328;
IF v_trx_id IS NOT NULL
THEN
    DELETE FROM ra_customer_trx_all
     WHERE CUSTOMER_TRX_ID = v_trx_id;
    DELETE FROM ra_customer_trx_lines_all
     WHERE CUSTOMER_TRX_ID = v_trx_id;
    DELETE FROM ra_cust_trx_line_salesreps_all
     WHERE CUSTOMER_TRX_ID = v_trx_id;
    DELETE FROM ra_cust_trx_line_gl_dist_all
     WHERE CUSTOMER_TRX_ID = v_trx_id;
    DELETE FROM ar_payment_schedules_all
     WHERE CUSTOMER_TRX_ID = v_trx_id;
END IF;
END;Other wise do this simply.
DELETE FROM ra_customer_trx_all
WHERE CUSTOMER_TRX_ID = 1328;
DELETE FROM ra_customer_trx_lines_all
WHERE CUSTOMER_TRX_ID = 1328;
DELETE FROM ra_cust_trx_line_salesreps_all
WHERE CUSTOMER_TRX_ID = 1328;
DELETE FROM ra_cust_trx_line_gl_dist_all
WHERE CUSTOMER_TRX_ID = 1328;
DELETE FROM ar_payment_schedules_all
WHERE CUSTOMER_TRX_ID = 1328;G.
Edited by: Ganesh Srivatsav on Apr 1, 2011 12:34 PM

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I need to delete records from multiple tables using a single delete statement. Is it possible ? If so please let me know the procedure.
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Thanks,
Alexander.

Hi Tim,
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Suppose i have following tables
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Thank you for reading my post.
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Thank you

Hi,
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Thanks,
RK.

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