Lets assume 'table1' has three columns:
'key',
'singleID',
'multipleIDs'
Rows would be like:
1,'8736', '1234;6754;9785;6749'
2,'7446', '9959;7758;6485;9264'
To search for all rows which have an id either in 'singleID' or as part of
the concatenated IDs in the 'multipleIDs' I would:
select key from table1 where
singleID = '8888' or multipleIDs like '%8888%';
When searching not only for one ID (8888) like in this statement but for 100 it would be necessary to repeate the where clause 100 times with different id like:
select key from table1 where
singleID = '8888' or multipleIDs like '%8888%' or
singleID = '9999' or multipleIDs like '%9999%' or
....;
The IDs to search for are taken dynamically from another query like
select id from table2;
The query shall
be created dynamically since the number of IDs might vary.
Like this the SQL statement would become quite long.
Is there a nice and short way to express that in Oracle SQL? PLSQL perhaps?
Something like this?
This is the test version:
with sv_qry
as
(
SELECT trim(regexp_substr(search_values, '[^,]+', 1, LEVEL)) val
FROM (select '1234,7446' as search_values
from dual
)
CONNECT BY LEVEL <= regexp_count(search_values, ',')+1
)
, table1_qry
as
(select 1 as id,'8736' as single_id, '1234;6754;9785;6749' as multiple_id from dual
union all
select 2,'7446' as single_id, '9959;7758;6485;9264' as multiple_id from dual
)
select *
from table1_qry
inner join
sv_qry
on single_id = val or multiple_id like '%'||val||'%'
And this would be with a table called table1:
with sv_qry
as
(
SELECT trim(regexp_substr(search_values, '[^,]+', 1, LEVEL)) val
FROM (select '1234,7446' as search_values
from dual
)
CONNECT BY LEVEL <= regexp_count(search_values, ',')+1
)
select *
from table1
inner join
sv_qry
on single_id = val or multiple_id like '%'||val||'%'
Partial credit goes here:
Splitting string into multiple rows in Oracle
You can express the query like this :
select key
from table1 a
join ( select id from table2 where id in ('yyyy','xxxx','zzzz',...) b
on a.singleId = b.id or a.multipleID like '%'||b.id||'%';
Related
Oracle 12.2 - I have a table with 3 columns... ID, ParentID and ProductList. ID is unique, with multiple IDs rolling up to a ParentID. (this is a account model... basically multiple accounts have the same parent...) ProductList is a string...also exactly 20 bytes... right now it is 20 letters of 'Y' and 'N', such as YYNYNYNYNNNY... but I can change the 'Y' and 'N' to 1 and 0 if it will help... what I need to do is within a group of ParentID, calculate a bitwise OR of the ProductList. The end result I need is a 20 byte string (or some type of 20 bits of data) that says - for each respective letter/bit - if any 'Y' then return 'Y'. Again, I can use 1/0 if easier than Y/N.
Here is pseudoCode of what I am trying to do... Any help appreciated.
with T1 as
(
select 10 as ID, 20 as ParentID, 'YYNNYNYNYNYYNNYNYNYN' as ProductList from dual
union
select 11 as ID, 20 as ParentID, 'NNNNNNNNNNYYYYYYYYYY' as ProductList from dual
union
select 22 as ID, 20 as ParentID, 'YYNNNNNNNNNNNNNNNNNN' as ProductList from dual
)
SELECT ParentID, BitWiseOr(ProductList) FROM t1
group by ParentID;
You can use the brute force method of taking the maximum of each character and then using ||:
SELECT ParentID,
(max(substr(productlist, 1, 1)) ||
max(substr(productlist, 2, 1)) ||
max(substr(productlist, 3, 1)) ||
. . .
max(substr(productlist, 20, 1)) ||
)
FROM t1
GROUP BY ParentID;
This works because 'Y' > 'N'.
Note: This is a lousy data model. You should have a separate table with one row per id and product.
You can destruct string to atomic values, compute result of or operation and assemble it back into string. (Credit to #GordonLinoff for Y>N trick.) dbfiddle here.
Unfortunately, Oracle does not allow something like unpivot (val FOR substring(ProductList,i,1 in ... and also Oracle does not have equivalent to Postgres bool_or, which would both made solution simpler. At least this solution scales with ProductList length.
Anyway you should avoid violating 1st normal form. If you cannot, it IMHO does not matter how boolean is modelled.
with T1 as
(
select 10 as ID, 20 as ParentID, 'YYNNYNYNYNYYNNYNYNYN' as ProductList from dual
union
select 11 as ID, 20 as ParentID, 'NNNNNNNNNNYYYYYYYYYY' as ProductList from dual
union
select 22 as ID, 20 as ParentID, 'YYNNNNNNNNNNNNNNNNNN' as ProductList from dual
), series (i) as (
select level as i
from dual
connect by level <= 20
), applied_or as (
select t1.parentid
, max(substr(t1.productlist, series.i, 1)) as or_result
, series.i
from t1
cross join series
group by t1.parentid, series.i
)
select parentid
, listagg(or_result) within group (order by i)
from applied_or
group by parentid
In Oracle SQL developer I have a Query in which I have to find all the table names which are starting as 'DIM' and 'FCT' and 'ABC'.
Example:
SELECT * FROM DIM_TABLE,fct_table,abc_table WHERE..
I am trying through regular expression instring and substring.But unable to get the exact end position of the table.
Can you please help me in this?
My approach is as follows:
a. first extract the part of the query that contains table names separated by comma
b. convert comma separated values to rows
c. Filter out the rows by the criteria given
select * from(
select trim(regexp_substr(REGEXP_SUBSTR('SELECT * FROM DIM_TABLE,fct_table,abc_table WHERE','FROM (.*) WHERE',1,1,null,1),'[^,]+', 1, level) ) value, level
from dual
connect by regexp_substr(REGEXP_SUBSTR('SELECT * FROM DIM_TABLE,fct_table,abc_table WHERE','FROM (.*) WHERE',1,1,null,1), '[^,]+', 1, level) is not null
)
where
value like 'DIM%' or value like 'fct%' or value like 'abc%'
results:
DIM_TABLE
fct_table
abc_table
EDIT 2:
ok
So now that you have changed your original query this will look like the following:
select * from(
select trim(regexp_substr(
replace (
replace (
replace (
REGEXP_SUBSTR('SELECT * FROM DIM_TABLE INNER JOIN FCT_TABLE ON FCT_TABLE.COL1 = DIM_TABLE.COL1 LEFT OUTER JOIN ABC_TABLE WHERE','FROM (.*) WHERE',1,1,null,1),
'INNER JOIN',',') ,'LEFT OUTER JOIN',','), 'ON',',XXX')
,'[^,]+', 1, level) ) value, level
from dual
connect by regexp_substr(
replace (
replace (
replace (
REGEXP_SUBSTR('SELECT * FROM DIM_TABLE INNER JOIN FCT_TABLE ON FCT_TABLE.COL1 = DIM_TABLE.COL1 LEFT OUTER JOIN ABC_TABLE WHERE','FROM (.*) WHERE',1,1,null,1),
'INNER JOIN',',') ,'LEFT OUTER JOIN',','), 'ON',',XXX')
, '[^,]+', 1, level) is not null
)
where
value like 'DIM%' or value like 'FCT%' or value like 'ABC%'
Results 2
DIM_TABLE 1
FCT_TABLE 2
ABC_TABLE 4
It is not pretty - but it works - I think you got the idea...
SELECT table_name
FROM user_tables
WHERE table_name like 'DIM%'
OR table_name like 'FCT%'
OR table_name like 'ABC%'
I am approaching this issue from a non DBA perspective, as in I do not have permissions to create new tables for the database. I am trying to work around this by using a subquery in Oracle kind of like this sudo code:
With temptable as ('col1name', 'col2name', 1,'a',2,'b')
Select * from temptable where col1name = 1
With the temptable looking like
Col1name | Col2name
1 a
2 b
And the output being row 1. I know it is not the easiest way to do it, but it is all I can think of to accomplish my task until I can get the admin to approve a new table. I have searched a lot but I can't find an answer. Is there a simple way to define temporary table data like this?
I would just do this as:
with temptable as (
select 1 as col1name, 'a' col2name from dual union all
select 2, 'b' from dual
)
Select *
from temptable
where col1name = 1;
As an alternative to a CTE (common table expresssion) as suggested by Gordon, you can also use a query as an old-school inline view.
For example:
SELECT tt.col1name
, tt.col2name
FROM ( SELECT 1 AS col1name, 'a' AS col2name FROM DUAL
UNION ALL SELECT 2, 'b' FROM DUAL
UNION ALL SELECT 3, 'c' FROM DUAL
) tt
WHERE tt.col1name = 1
ORDER
BY tt.col1name
I am trying out my hands on oracle 11g. I have a requirement such that I want to fetch those id from list which does not exists in table.
For example:
SELECT * FROM STOCK
where item_id in ('1','2'); // Return those records where result is null
I mean if item_id '1' is not present in db then the query should return me 1.
How can I achieve this?
You need to store the values in some sort of "table". Then you can use left join or not exists or something similar:
with ids as (
select 1 as id from dual union all
select 2 from dual
)
select ids.id
from ids
where not exists (select 1 from stock s where s.item_id = ids.id);
You can use a LEFT JOIN to an in-line table that contains the values to be searched:
SELECT t1.val
FROM (
SELECT '1' val UNION ALL SELECT '2'
) t1
LEFT JOIN STOCK t2 ON t1.val = t2.item_id
WHERE t2.item_id IS NULL
First create the list of possible IDs (e.g. 0 to 99 in below query). You can use a recursive cte for this. Then select these IDs and remove the IDs already present in the table from the result:
with possible_ids(id) as
(
select 0 as id from dual
union all
select id + 1 as id from possible_ids where id < 99
)
select id from possible_ids
minus
select item_id from stock;
A primary concern of the OP seems to be a terse notation of the query, notably the set of values to test for. The straightforwwrd recommendation would be to retrieve these values by another query or to generate them as a union of queries from the dual table (see the other answers for this).
The following alternative solution allows for a verbatim specification of the test values under the following conditions:
There is a character that does not occur in any of the test values provided ( in the example that will be - )
The number of values to test stays well below 2000 (to be precise, the list of values plus separators must be written as a varchar2 literal, which imposes the length limit ). However, this should not be an actual concern - If the test involves lists of hundreds of ids, these lists should definitely be retrieved froma table/view.
Caveat
Whether this method is worth the hassle ( not to mention potential performance impacts ) is questionable, imho.
Solution
The test values will be provided as a single varchar2 literal with - separating the values which is as terse as the specification as a list argument to the IN operator. The string starts and ends with -.
'-1-2-3-156-489-4654648-'
The number of items is computed as follows:
select cond, regexp_count ( cond, '[-]' ) - 1 cnt_items from (select '-1-2-3-156-489-4654648-' cond from dual)
A list of integers up to the number of items starting with 1 can be generated using the LEVEL pseudocolumn from hierarchical queries:
select level from dual connect by level < 42;
The n-th integer from that list will serve to extract the n-th value from the string (exemplified for the 4th value) :
select substr ( cond, instr(cond,'-', 1, 4 )+1, instr(cond,'-', 1, 4+1 ) - instr(cond,'-', 1, 4 ) - 1 ) si from (select cond, regexp_count ( cond, '[-]' ) - 1 cnt_items from (select '-1-2-3-156-489-4654648-' cond from dual) );
The non-existent stock ids are generated by subtracting the set of stock ids from the set of values. Putting it all together:
select substr ( cond, instr(cond,'-',1,level )+1, instr(cond,'-',1,level+1 ) - instr(cond,'-',1,level ) - 1 ) si
from (
select cond
, regexp_count ( cond, '[-]' ) - 1 cnt_items
from (
select '-1-2-3-156-489-4654648-' cond from dual
)
)
connect by level <= cnt_items + 1
minus
select item_id from stock
;
I have the below code to show what I am "trying" to accomplish in a stored procedure:
select * from
(
select to_char(sum(aa.amount))
from additional_amount aa, status st
where aa.int_tran_id = st.int_tran_id
and st.stage in ('ACHPayment_Confirmed')
and aa.entry_timestamp > (
select to_date(trunc(last_day(add_months(sysdate,-1))+1), 'DD-MON-RR') AS "day 1"
from dual
)
)
UNION ALL
(
select distinct it.debit_acct as "debit_accounts"
from internal_transactions it
where it.debit_acct IN ( select texe_cnasupro
from service.kndtexe, service.kndtctc
where texe_cncclipu = tctc_cncclipu
and tctc_cntipcli = 'C'
)
)
union all
(select distinct it.credit_acct as "credit_account"
from internal_transactions it
where it.credit_acct IN (select texe_cnasupro
from service.kndtexe, service.kndtctc
where texe_cncclipu = tctc_cncclipu
and tctc_cntipcli = 'C'
)
)
;
Output:
TO_CHAR(SUM(AA.AMOUNT))
----------------------------------------
130250292.22
6710654504
0000050334
2535814905
0007049560
5 rows selected
The top row of the output is what I need in the SP as output based on the below two queries which I am guessing needs to be sub-queried against the top select statement.
The top select is to select the sum of the amount a table with a join against another table for filtering (output:130250292.22).
The second and third selects is actually to check that the accounts in the internal_transactions table are signed up for the corresponding two tables in the service db which is a different db on the same server(owned by the same application).
The tables in the "service" db do not have the same common primary keys as in the first select which is against the same database.
Thank you for your help!
I don't understand your question, but I do know you can simplify this bit:
to_date(trunc(last_day(add_months(sysdate,-1))+1), 'DD-MON-RR') AS "day 1"
to this
trunc (sysdate, 'mm')
and you don't need a SELECT from DUAL to do that either.
and aa.entry_timestamp > trunc (sysdate, 'mm')