In Microsoft SQL Server,
if the inner select doesn't have a matching criteria, then I need to update Field1 with blank instead of null.
UPDATE Table1
SET Field1=(
SELECT Field2
FROM Table2
WHERE Table2.Field3 = Table1.Field4
)
Please try like this -
UPDATE a
SET a.Field1 = ISNULL(b.Field2,'')
FROM Table1 a
LEFT JOIN Table2 b ON b.Field3 = a.Field4
You can reference another table using SQL Server's UPDATE ... FROM ... syntax:
UPDATE t1
SET field1 = COALESCE(t2.field2, '')
FROM Table1 t1
LEFT JOIN
Table2 t2
ON t2.Field3 = t1.Field4
The COALESCE() function returns the first non-null expression in a list. You can keep most of your original query, by using COALESCE() to replace any NULL from that query with an empty string.
UPDATE Table1
SET Field1=COALESCE((
SELECT Field2
FROM Table2
WHERE Table2.Field3 = Table1.Field4
), '')
Try this
UPDATE T1
SET T1.Field1=isnull(T2.Field2,'')
from Table1 T1 left join Table2 T2
ON T2.Field3 = T1.Field4
Related
I've go this request in SQL for a migration:
UPDATE table1
SET table1.value = table2.value
FROM table1
INNER JOIN table2
ON table2.othervalue2 = table1.key
WHERE table2.othervalue3 is NULL
Works well.
But not with Oracle. I know it isn't impossible to make join in a update with oracle, so I use this:
UPDATE table1 SET table1.value = (SELECT table2.value
FROM table2
WHERE table2.othervalue2 = table1.key
AND table2.othervalue3 is NULL)
WHERE EXISTS (SELECT table2.value
FROM table2
WHERE table2.othervalue2 = table1.key
AND table2.othervalue3 is NULL)
but I have an ORA-01427: Subquery returns more than one row.
Thanks
i would say you have inconsistent data. From the Errors you get i would say you have duplicates in the query specified.
SELECT table2.value
FROM table2
WHERE table2.othervalue2 = table1.key
AND table2.othervalue3 is NULL
you might wanne check it.or you need to have the data better specified you want to select for Update/Merge.
I have a query which works fine in MySQL, but when I run it on Oracle I get the following error:
SQL Error: ORA-00933: SQL command not properly ended
00933. 00000 - "SQL command not properly ended"
The query is:
UPDATE table1
INNER JOIN table2 ON table1.value = table2.DESC
SET table1.value = table2.CODE
WHERE table1.UPDATETYPE='blah';
That syntax isn't valid in Oracle. You can do this:
UPDATE table1 SET table1.value = (SELECT table2.CODE
FROM table2
WHERE table1.value = table2.DESC)
WHERE table1.UPDATETYPE='blah'
AND EXISTS (SELECT table2.CODE
FROM table2
WHERE table1.value = table2.DESC);
Or you might be able to do this:
UPDATE
(SELECT table1.value as OLD, table2.CODE as NEW
FROM table1
INNER JOIN table2
ON table1.value = table2.DESC
WHERE table1.UPDATETYPE='blah'
) t
SET t.OLD = t.NEW
It depends if the inline view is considered updateable by Oracle
( To be updatable for the second statement depends on some rules listed
here ).
Use this:
MERGE
INTO table1 trg
USING (
SELECT t1.rowid AS rid, t2.code
FROM table1 t1
JOIN table2 t2
ON table1.value = table2.DESC
WHERE table1.UPDATETYPE='blah'
) src
ON (trg.rowid = src.rid)
WHEN MATCHED THEN UPDATE
SET trg.value = code;
MERGE with WHERE clause:
MERGE into table1
USING table2
ON (table1.id = table2.id)
WHEN MATCHED THEN UPDATE SET table1.startdate = table2.start_date
WHERE table1.startdate > table2.start_date;
You need the WHERE clause because columns referenced in the ON clause cannot be updated.
Do not use some of the answers above.
Some suggest the use of nested SELECT, don't do that, it is excruciatingly slow. If you have lots of records to update, use join, so something like:
update (select bonus
from employee_bonus b
inner join employees e on b.employee_id = e.employee_id
where e.bonus_eligible = 'N') t
set t.bonus = 0;
See this link for more details.
http://geekswithblogs.net/WillSmith/archive/2008/06/18/oracle-update-with-join-again.aspx.
Also, ensure that there are primary keys on all the tables you are joining.
UPDATE ( SELECT t1.value, t2.CODE
FROM table1 t1
INNER JOIN table2 t2 ON t1.Value = t2.DESC
WHERE t1.UPDATETYPE='blah')
SET t1.Value= t2.CODE
As indicated here, the general syntax for the first solution proposed by Tony Andrews is :
update some_table s
set (s.col1, s.col2) = (select x.col1, x.col2
from other_table x
where x.key_value = s.key_value
)
where exists (select 1
from other_table x
where x.key_value = s.key_value
)
I think this is interesting especially if you want update more than one field.
It works fine oracle
merge into table1 t1
using (select * from table2) t2
on (t1.empid = t2.empid)
when matched then update set t1.salary = t2.salary
This following syntax works for me.
UPDATE
(SELECT A.utl_id,
b.utl1_id
FROM trb_pi_joint A
JOIN trb_tpr B
ON A.tp_id=B.tp_id Where A.pij_type=2 and a.utl_id is null
)
SET utl_id=utl1_id;
Using description instead of desc for table2,
update
table1
set
value = (select code from table2 where description = table1.value)
where
exists (select 1 from table2 where description = table1.value)
and
table1.updatetype = 'blah'
;
UPDATE table1 t1
SET t1.value =
(select t2.CODE from table2 t2
where t1.value = t2.DESC)
WHERE t1.UPDATETYPE='blah';
UPDATE (SELECT T.FIELD A, S.FIELD B
FROM TABLE_T T INNER JOIN TABLE_S S
ON T.ID = S.ID)
SET B = A;
A and B are alias fields, you do not need to point the table.
UPDATE IP_ADMISSION_REQUEST ip1
SET IP1.WRIST_BAND_PRINT_STATUS=0
WHERE IP1.IP_ADM_REQ_ID =
(SELECT IP.IP_ADM_REQ_ID
FROM IP_ADMISSION_REQUEST ip
INNER JOIN VISIT v
ON ip.ip_visit_id=v.visit_id
AND v.pat_id =3702
); `enter code here`
Just as a matter of completeness, and because we're talking Oracle, this could do it as well:
declare
begin
for sel in (
select table2.code, table2.desc
from table1
join table2 on table1.value = table2.desc
where table1.updatetype = 'blah'
) loop
update table1
set table1.value = sel.code
where table1.updatetype = 'blah' and table1.value = sel.desc;
end loop;
end;
/
Oracle base has a good run down on this.
https://oracle-base.com/articles/misc/updates-based-on-queries
From this link - I used a modification of the above query which did not work for me (the answer from mathguy which uses rowid)
MERGE /*+ APPEND PARALLEL(8) */ INTO dest_table tt
USING source_table st
ON (tt.identifier = st.identifier)
WHEN MATCHED THEN
UPDATE SET tt.number = st.number;
Here I have two tables: source and dest. They both have a varchar field in common and I am adding the source identify field (PK) into the dest table.
update table1 a
set a.col1='Y'
where exists(select 1
from table2 b
where a.col1=b.col1
and a.col2=b.col2
)
I have a query which works fine in MySQL, but when I run it on Oracle I get the following error:
SQL Error: ORA-00933: SQL command not properly ended
00933. 00000 - "SQL command not properly ended"
The query is:
UPDATE table1
INNER JOIN table2 ON table1.value = table2.DESC
SET table1.value = table2.CODE
WHERE table1.UPDATETYPE='blah';
That syntax isn't valid in Oracle. You can do this:
UPDATE table1 SET table1.value = (SELECT table2.CODE
FROM table2
WHERE table1.value = table2.DESC)
WHERE table1.UPDATETYPE='blah'
AND EXISTS (SELECT table2.CODE
FROM table2
WHERE table1.value = table2.DESC);
Or you might be able to do this:
UPDATE
(SELECT table1.value as OLD, table2.CODE as NEW
FROM table1
INNER JOIN table2
ON table1.value = table2.DESC
WHERE table1.UPDATETYPE='blah'
) t
SET t.OLD = t.NEW
It depends if the inline view is considered updateable by Oracle
( To be updatable for the second statement depends on some rules listed
here ).
Use this:
MERGE
INTO table1 trg
USING (
SELECT t1.rowid AS rid, t2.code
FROM table1 t1
JOIN table2 t2
ON table1.value = table2.DESC
WHERE table1.UPDATETYPE='blah'
) src
ON (trg.rowid = src.rid)
WHEN MATCHED THEN UPDATE
SET trg.value = code;
MERGE with WHERE clause:
MERGE into table1
USING table2
ON (table1.id = table2.id)
WHEN MATCHED THEN UPDATE SET table1.startdate = table2.start_date
WHERE table1.startdate > table2.start_date;
You need the WHERE clause because columns referenced in the ON clause cannot be updated.
Do not use some of the answers above.
Some suggest the use of nested SELECT, don't do that, it is excruciatingly slow. If you have lots of records to update, use join, so something like:
update (select bonus
from employee_bonus b
inner join employees e on b.employee_id = e.employee_id
where e.bonus_eligible = 'N') t
set t.bonus = 0;
See this link for more details.
http://geekswithblogs.net/WillSmith/archive/2008/06/18/oracle-update-with-join-again.aspx.
Also, ensure that there are primary keys on all the tables you are joining.
UPDATE ( SELECT t1.value, t2.CODE
FROM table1 t1
INNER JOIN table2 t2 ON t1.Value = t2.DESC
WHERE t1.UPDATETYPE='blah')
SET t1.Value= t2.CODE
As indicated here, the general syntax for the first solution proposed by Tony Andrews is :
update some_table s
set (s.col1, s.col2) = (select x.col1, x.col2
from other_table x
where x.key_value = s.key_value
)
where exists (select 1
from other_table x
where x.key_value = s.key_value
)
I think this is interesting especially if you want update more than one field.
It works fine oracle
merge into table1 t1
using (select * from table2) t2
on (t1.empid = t2.empid)
when matched then update set t1.salary = t2.salary
This following syntax works for me.
UPDATE
(SELECT A.utl_id,
b.utl1_id
FROM trb_pi_joint A
JOIN trb_tpr B
ON A.tp_id=B.tp_id Where A.pij_type=2 and a.utl_id is null
)
SET utl_id=utl1_id;
Using description instead of desc for table2,
update
table1
set
value = (select code from table2 where description = table1.value)
where
exists (select 1 from table2 where description = table1.value)
and
table1.updatetype = 'blah'
;
UPDATE table1 t1
SET t1.value =
(select t2.CODE from table2 t2
where t1.value = t2.DESC)
WHERE t1.UPDATETYPE='blah';
UPDATE (SELECT T.FIELD A, S.FIELD B
FROM TABLE_T T INNER JOIN TABLE_S S
ON T.ID = S.ID)
SET B = A;
A and B are alias fields, you do not need to point the table.
UPDATE IP_ADMISSION_REQUEST ip1
SET IP1.WRIST_BAND_PRINT_STATUS=0
WHERE IP1.IP_ADM_REQ_ID =
(SELECT IP.IP_ADM_REQ_ID
FROM IP_ADMISSION_REQUEST ip
INNER JOIN VISIT v
ON ip.ip_visit_id=v.visit_id
AND v.pat_id =3702
); `enter code here`
Just as a matter of completeness, and because we're talking Oracle, this could do it as well:
declare
begin
for sel in (
select table2.code, table2.desc
from table1
join table2 on table1.value = table2.desc
where table1.updatetype = 'blah'
) loop
update table1
set table1.value = sel.code
where table1.updatetype = 'blah' and table1.value = sel.desc;
end loop;
end;
/
Oracle base has a good run down on this.
https://oracle-base.com/articles/misc/updates-based-on-queries
From this link - I used a modification of the above query which did not work for me (the answer from mathguy which uses rowid)
MERGE /*+ APPEND PARALLEL(8) */ INTO dest_table tt
USING source_table st
ON (tt.identifier = st.identifier)
WHEN MATCHED THEN
UPDATE SET tt.number = st.number;
Here I have two tables: source and dest. They both have a varchar field in common and I am adding the source identify field (PK) into the dest table.
update table1 a
set a.col1='Y'
where exists(select 1
from table2 b
where a.col1=b.col1
and a.col2=b.col2
)
I know its almost there, but base is telling me it can't find a column called table1.id when I know its there!
UPDATE table2 SET col1 = (SELECT field1 FROM table1 WHERE table2.id = table1.id) WHERE table1.id = table2.id
UPDATE table2 SET col1 = (SELECT field1 FROM table1 WHERE table2.id = table1.id)
table1 is unknown in the outer SQL.
What I get from your query, this will work
UPDATE table2 SET col1 = t1.field1
FROM table2 t2 INNER JOIN table1 t1 ON t2.id = t1.id
Instead of using a WHERE clause, try using an INNER JOIN clause. It is indeed late so forgive me for my code haha
UPDATE table2
SET col1 = (SELECT field1
FROM table1
WHERE table2.id = table1.id)
INNER JOIN table1
ON table2.id = table1.id
Option 1: No need to have outer WHERE clause.
Option 2: Do not use inner query unneccesarily. Use Inner Join instead
I have a query which works fine in MySQL, but when I run it on Oracle I get the following error:
SQL Error: ORA-00933: SQL command not properly ended
00933. 00000 - "SQL command not properly ended"
The query is:
UPDATE table1
INNER JOIN table2 ON table1.value = table2.DESC
SET table1.value = table2.CODE
WHERE table1.UPDATETYPE='blah';
That syntax isn't valid in Oracle. You can do this:
UPDATE table1 SET table1.value = (SELECT table2.CODE
FROM table2
WHERE table1.value = table2.DESC)
WHERE table1.UPDATETYPE='blah'
AND EXISTS (SELECT table2.CODE
FROM table2
WHERE table1.value = table2.DESC);
Or you might be able to do this:
UPDATE
(SELECT table1.value as OLD, table2.CODE as NEW
FROM table1
INNER JOIN table2
ON table1.value = table2.DESC
WHERE table1.UPDATETYPE='blah'
) t
SET t.OLD = t.NEW
It depends if the inline view is considered updateable by Oracle
( To be updatable for the second statement depends on some rules listed
here ).
Use this:
MERGE
INTO table1 trg
USING (
SELECT t1.rowid AS rid, t2.code
FROM table1 t1
JOIN table2 t2
ON table1.value = table2.DESC
WHERE table1.UPDATETYPE='blah'
) src
ON (trg.rowid = src.rid)
WHEN MATCHED THEN UPDATE
SET trg.value = code;
MERGE with WHERE clause:
MERGE into table1
USING table2
ON (table1.id = table2.id)
WHEN MATCHED THEN UPDATE SET table1.startdate = table2.start_date
WHERE table1.startdate > table2.start_date;
You need the WHERE clause because columns referenced in the ON clause cannot be updated.
Do not use some of the answers above.
Some suggest the use of nested SELECT, don't do that, it is excruciatingly slow. If you have lots of records to update, use join, so something like:
update (select bonus
from employee_bonus b
inner join employees e on b.employee_id = e.employee_id
where e.bonus_eligible = 'N') t
set t.bonus = 0;
See this link for more details.
http://geekswithblogs.net/WillSmith/archive/2008/06/18/oracle-update-with-join-again.aspx.
Also, ensure that there are primary keys on all the tables you are joining.
UPDATE ( SELECT t1.value, t2.CODE
FROM table1 t1
INNER JOIN table2 t2 ON t1.Value = t2.DESC
WHERE t1.UPDATETYPE='blah')
SET t1.Value= t2.CODE
As indicated here, the general syntax for the first solution proposed by Tony Andrews is :
update some_table s
set (s.col1, s.col2) = (select x.col1, x.col2
from other_table x
where x.key_value = s.key_value
)
where exists (select 1
from other_table x
where x.key_value = s.key_value
)
I think this is interesting especially if you want update more than one field.
It works fine oracle
merge into table1 t1
using (select * from table2) t2
on (t1.empid = t2.empid)
when matched then update set t1.salary = t2.salary
This following syntax works for me.
UPDATE
(SELECT A.utl_id,
b.utl1_id
FROM trb_pi_joint A
JOIN trb_tpr B
ON A.tp_id=B.tp_id Where A.pij_type=2 and a.utl_id is null
)
SET utl_id=utl1_id;
Using description instead of desc for table2,
update
table1
set
value = (select code from table2 where description = table1.value)
where
exists (select 1 from table2 where description = table1.value)
and
table1.updatetype = 'blah'
;
UPDATE table1 t1
SET t1.value =
(select t2.CODE from table2 t2
where t1.value = t2.DESC)
WHERE t1.UPDATETYPE='blah';
UPDATE (SELECT T.FIELD A, S.FIELD B
FROM TABLE_T T INNER JOIN TABLE_S S
ON T.ID = S.ID)
SET B = A;
A and B are alias fields, you do not need to point the table.
UPDATE IP_ADMISSION_REQUEST ip1
SET IP1.WRIST_BAND_PRINT_STATUS=0
WHERE IP1.IP_ADM_REQ_ID =
(SELECT IP.IP_ADM_REQ_ID
FROM IP_ADMISSION_REQUEST ip
INNER JOIN VISIT v
ON ip.ip_visit_id=v.visit_id
AND v.pat_id =3702
); `enter code here`
Just as a matter of completeness, and because we're talking Oracle, this could do it as well:
declare
begin
for sel in (
select table2.code, table2.desc
from table1
join table2 on table1.value = table2.desc
where table1.updatetype = 'blah'
) loop
update table1
set table1.value = sel.code
where table1.updatetype = 'blah' and table1.value = sel.desc;
end loop;
end;
/
Oracle base has a good run down on this.
https://oracle-base.com/articles/misc/updates-based-on-queries
From this link - I used a modification of the above query which did not work for me (the answer from mathguy which uses rowid)
MERGE /*+ APPEND PARALLEL(8) */ INTO dest_table tt
USING source_table st
ON (tt.identifier = st.identifier)
WHEN MATCHED THEN
UPDATE SET tt.number = st.number;
Here I have two tables: source and dest. They both have a varchar field in common and I am adding the source identify field (PK) into the dest table.
update table1 a
set a.col1='Y'
where exists(select 1
from table2 b
where a.col1=b.col1
and a.col2=b.col2
)