I want to match Col1 from Table a to colum1 from table B.
A B
123 123-ab
234 234-bc
3443 3443-dd
However, value in table b has concatenated data. I want to match only the characters until before special character occurs(-).
I tried this : substr(table1.a,1,3) = substr(table2.b,1,3)
But this doesn’t work as some values have 4 digits.
use join and substr
select * from table_a
inner join table_b on table_a.col_a = substr(table_b.col_b, 1, length(table_a.col_a);
Using REGEXP_SUBSTR() to match on one or more numbers from the beginning of the string up to but not including the first hyphen:
SQL> with a(col1) as (
select '123' from dual union
select '234' from dual union
select '3443' from dual
),
b(col1) as (
select '123-ab' from dual union
select '234-bc' from dual union
select '3443-dd' from dual
)
select a.col1, b.col1
from a, b
where a.col1 = regexp_substr(b.col1, '^(\d+)-', 1, 1, NULL, 1);
COL1 COL1
---- -------
123 123-ab
234 234-bc
3443 3443-dd
SQL>
Related
I am trying to get some default value in my resultset if query does not return anything. I am trying nvl for the same but it is not returning the expected default value. To simulate, Consider following query,
select nvl(null, '10') from dual where 1=0;
I want to get 10 in case of given condition is not true and query does not return any value. However above query not returning any row.
Your query returns zero rows. NVL() isn't going to change that (*).
The correct solution is for the program which executes the query to handle NO_DATA_FOUND exception rather than fiddling the query.
However, you need a workaround so here is one using two sub-queries, one for your actual query, one to for the default.
When your_query returns an empty set you get this:
SQL> with your_qry as
2 ( select col1 from t42 where 1=0 )
3 , dflt as
4 ( select 10 as col1 from dual )
5 select col1
6 from your_qry
7 union all
8 select col1
9 from dflt
10 where not exists (select * from your_qry );
COL1
----------
10
SQL>
And when it returns a row you get this:
SQL> with your_qry as
2 ( select col1 from t42 )
3 , dflt as
4 ( select 10 as col1 from dual )
5 select col1
6 from your_qry
7 union all
8 select col1
9 from dflt
10 where not exists (select * from your_qry );
COL1
----------
12
13
SQL>
The WITH clause is optional here, it just makes it easier to write the query without duplication. This would have the same outcome:
select col1
from t42
where col0 is null
union all
select 10
from dual
where not exists (select col1
from t42
where col0 is null)
;
(*) Okay, there are solutions which use NVL() or COALESCE() with aggregations to do this. They work with single column projections in a single row as this question poses, but break down when the real query has more than one row and/or more than one column. Aggregations change the results.
So this looks alright ...
SQL> with cte as (
2 select 'Z' as col0, 12 as col1 from dual where 1=0 union all
3 select 'X' as col0, 13 as col1 from dual where 1=0 )
4 select
5 nvl(max(col0), 'Y') as col0, nvl(max( col1), 10) as col1
6 from cte;
COL0 COL1
---------- ----------
Y 10
SQL>
... but this not so much:
SQL> with cte as (
2 select 'Z' as col0, 12 as col1 from dual union all
3 select 'X' as col0, 13 as col1 from dual )
4 select
5 nvl(max(col0), 'Y') as col0, nvl(max( col1), 10) as col1
6 from cte;
COL0 COL1
---------- ----------
Z 13
SQL>
May be something like this is what you need
You could change WHERE clause (in this case WHERE COL > 1) similarly in both places.
WITH T(COL) AS(
SELECT 1 FROM DUAL UNION ALL
SELECT 2 FROM DUAL UNION ALL
SELECT 3 FROM DUAL
)
SELECT COL FROM T WHERE COL > 1
UNION ALL
SELECT 10 AS COL FROM DUAL WHERE NOT EXISTS( SELECT 1 FROM T WHERE COL > 1)
You can use aggregation. An aggregation query always returns one row:
select coalesce(max(null), '10')
from dual
where 1 = 0;
I prefer coalesce() to nvl() because coalesce() is the ANSI standard function. But, nvl() would work here just as well.
I have a table like
colA colB colC
A 10 1
A 20 2
A 30 3
B 10 1
B 20 2
I want an output like this
ColA colB colC
A 60 1,2,3
B 30 1,2
Can someone tell me how to do it with and without using functions, and in PL/SQL?
Here is sql you needed.
Note : it will only run on oracle 11g R2 onwards.
with tab as(
select 'A' col1,10 col2,1 col3 from dual union all
select 'A' col1,20 col2,2 col3 from dual union all
select 'A' col1,30 col2,3 col3 from dual union all
select 'B' col1,10 col2,1 col3 from dual union all
select 'B' col1,20 col2,2 col3 from dual )
select col1, sum(col2),listagg(col3,',') WITHIN GROUP (ORDER BY col3) AS col3_list
from tab group by col1
Assume your table name is tab
with tab1(col1, col2) as (
select colA, sum(colB)
from tab group by colA
),
tab2(col1, col2) as (
select colA, LISTAGG(TO_CHAR(colC),',')
WITHIN GROUP (ORDER BY colC)
from tab group by colA
)
select a.col1, a.col2, b.col2
from tab1 a, tab2 b
where a.col1 = b.col1
OutPut:
COL1 COL2 COL2
A 60 1,2,3
B 30 1,2
For more information about LISTAGG link
This link explains about multiple with clause
Or simply;
select colA, sum(colB) colB,LISTAGG(TO_CHAR(colC),',')
WITHIN GROUP (ORDER BY colC)
from tab group by colA
Probably this may the easiest solution syntactically :)
SELECT COLA,
SUM(COLB),
WMSYS.WM_CONCAT(COLC)
FROM
(SELECT 'A' cola,10 AS colb,1 AS colc FROM dual
UNION
SELECT 'A' cola,20 AS colb,2 AS colc FROM dual
UNION
SELECT 'A' cola,30 AS colb,3 AS colc FROM dual
UNION
SELECT 'B' cola,10 AS colb,1 AS colc FROM dual
UNION
SELECT 'B' cola,20 AS colb,2 AS colc FROM dual
)
GROUP BY COLA ;
OUTPUT
COLA SUM(COLB) WMSYS.WM_CONCAT(COLC)
A 60 1,2,3
B 30 1,2
I have a dynamic data set such as 'AAA','TTT','CCC','FFF'
I need to match this data against a column C in a table T
e.g. I have in the table T for Column C, 'AAA','BBB','DDD','FFF'
I need to return something like (show null if the value doesn't exist in Column)
'AAA'
'TTT' NULL
'CCC' NULL
'FFF'
I don't want to drop the set into table as my data changes frequently and need to query quickly.
Any ideas greatly appreciated.
Is this what you're after ??
with w_data as (
select 'AAA' c from dual union all
select 'TTT' c from dual union all
select 'CCC' c from dual union all
select 'FFF' c from dual
),
w_table_t as (
select 'AAA' c from dual union all
select 'BBB' c from dual union all
select 'DDD' c from dual union all
select 'FFF' c from dual
)
select d.c,
NVL2(t.c, '', 'NULL' )
from w_data d
LEFT OUTER JOIN
w_table_t t
ON t.c = d.c
/
results:
C NVL2
--- ----
AAA
FFF
TTT NULL
CCC NULL
Try this (EDITED) :
with data_set as (
select 'AAA' col from dual union
select 'TTT' col from dual union
select 'CCC' col from dual union
select 'FFF' col from dual
)
select case when d.col in (select column_C from table_T) then d.col
else d.col||' Null' end as col_name
from data_set d
/
I am trying to use a subquery that returns a comma delimited string in a IN clause.
The following way:
SELECT p.person_id, g.name || '>>' || p.firstname || ' ' || p.lastname as GROUP_PATH
FROM PERSON p
LEFT JOIN GROUP g ON (
g.group_id = p.group_id
)
WHERE p.person_id IN (
SELECT person_ids FROM other WHERE other_id = :OTHER_ID
)
ORDER BY lower(GROUP_PATH)
And I am getting the following error:
ORA-01722: invalid number.
Is there a better way to do this or even possible?
The most obvious explanation is that you are trying to do math with a string...
The attempted conversion of a
character string to a number failed
because the character string was not a
valid numeric literal. Only numeric
fields or character fields containing
numeric data may be used in arithmetic
functions or expressions. Only numeric
fields may be added to or subtracted
from dates.
http://ora-01722.ora-code.com/
Update #1:
Your description worries me:
I am trying to use a subquery that
returns a comma delimited string in a
IN clause.
Your subquery should not return a comma delimited string (unless g.group_id is a string and expects a comma delimited string). You must retrieve individual items in as many rows as needed (less than 1,000 anyway).
Update #2:
Just to make it clear:
SELECT *
FROM (
SELECT 1 AS FOO_ID FROM DUAL UNION SELECT 2 FROM DUAL UNION SELECT 3 FROM DUAL
) FOO;
FOO_ID
----------------------
1
2
3
You can do this:
SELECT *
FROM (
SELECT 1 AS FOO_ID FROM DUAL UNION SELECT 2 FROM DUAL UNION SELECT 3 FROM DUAL
) FOO
WHERE FOO_ID IN (1, 2);
FOO_ID
----------------------
1
2
But not this:
SELECT *
FROM (
SELECT 1 AS FOO_ID FROM DUAL UNION SELECT 2 FROM DUAL UNION SELECT 3 FROM DUAL
) FOO
WHERE FOO_ID IN ('1,2');
SQL Error: ORA-01722: invalid number
Because you cannot compare number 1 with string '1,2'. Subqueries follow similar rules:
SELECT *
FROM (
SELECT 1 AS FOO_ID FROM DUAL UNION SELECT 2 FROM DUAL UNION SELECT 3 FROM DUAL
) FOO
WHERE FOO_ID IN (
SELECT 1 AS FOO_ID FROM DUAL UNION SELECT 2 FROM DUAL
);
FOO_ID
----------------------
1
2
SELECT *
FROM (
SELECT 1 AS FOO_ID FROM DUAL UNION SELECT 2 FROM DUAL UNION SELECT 3 FROM DUAL
) FOO
WHERE FOO_ID IN (
SELECT '1,2' AS FOO_ID FROM DUAL
);
SQL Error: ORA-01722: invalid number
At a minimum, in order to reference the alias GROUP_PATH, you would need to need to use a nested subquery where the alias is defined before you reference it in your ORDER BY clause. That's realistically not causing the ORA-01722 error, but it is a problem
SELECT group_id, group_path
FROM (SELECT g.group_id,
g.name || '>>' || p.firstname || ' ' || p.lastname as GROUP_PATH
FROM PERSON p
LEFT JOIN GROUP g ON (
g.group_id = p.group_id
)
WHERE p.person_id IN (
SELECT person_ids FROM other WHERE other_id = :OTHER_ID
)
ORDER BY lower(GROUP_PATH)
If the PERSON_IDS column in the OTHER table is a comma separated list of values, your IN list is not going to do what you'd expect. You would need to transform the scalar string (that happens to have commas in it) into some sort of collection of multiple PERSON_ID values. There are various approaches to doing this, Tom Kyte has one example of using a variable IN list. Assuming you copy Tom's IN_LIST function, you should be able to do something like
SELECT group_id, group_path
FROM (SELECT g.group_id,
g.name || '>>' || p.firstname || ' ' || p.lastname as GROUP_PATH
FROM PERSON p
LEFT JOIN GROUP g ON (
g.group_id = p.group_id
)
WHERE p.person_id IN (
SELECT column_value
FROM TABLE(SELECT in_list(person_ids)
FROM other
WHERE other_id = :OTHER_ID)
)
ORDER BY lower(GROUP_PATH)
I have a string coming from a table like "can no pay{1},as your payment{2}due on {3}". I want to replace {1} with some value , {2} with some value and {3} with some value .
Is it Possible to replace all 3 in one replace function ? or is there any way I can directly write query and get replaced value ? I want to replace these strings in Oracle stored procedure the original string is coming from one of my table I am just doing select on that table
and then I want to replace {1},{2},{3} values from that string to the other value that I have from another table
Although it is not one call, you can nest the replace() calls:
SET mycol = replace( replace(mycol, '{1}', 'myoneval'), '{2}', mytwoval)
If there are many variables to replace and you have them in another table and if the number of variables is variable you can use a recursive CTE to replace them.
An example below. In table fg_rulez you put the strings with their replacement. In table fg_data you have your input strings.
set define off;
drop table fg_rulez
create table fg_rulez as
select 1 id,'<' symbol, 'less than' text from dual
union all select 2, '>', 'great than' from dual
union all select 3, '$', 'dollars' from dual
union all select 4, '&', 'and' from dual;
drop table fg_data;
create table fg_Data AS(
SELECT 'amount $ must be < 1 & > 2' str FROM dual
union all
SELECT 'John is > Peter & has many $' str FROM dual
union all
SELECT 'Eliana is < mary & do not has many $' str FROM dual
);
WITH q(str, id) as (
SELECT str, 0 id
FROM fg_Data
UNION ALL
SELECT replace(q.str,symbol,text), fg_rulez.id
FROM q
JOIN fg_rulez
ON q.id = fg_rulez.id - 1
)
SELECT str from q where id = (select max(id) from fg_rulez);
So, a single replace.
Result:
amount dollars must be less than 1 and great than 2
John is great than Peter and has many dollars
Eliana is less than mary and do not has many dollars
The terminology symbol instead of variable comes from this duplicated question.
Oracle 11gR2
Let's write the same sample as a CTE only:
with fg_rulez as (
select 1 id,'<' symbol, 'less than' text from dual
union all select 2, '>', 'greater than' from dual
union all select 3, '$', 'dollars' from dual
union all select 4, '+', 'and' from dual
), fg_Data AS (
SELECT 'amount $ must be < 1 + > 2' str FROM dual
union all
SELECT 'John is > Peter + has many $' str FROM dual
union all
SELECT 'Eliana is < mary + do not has many $' str FROM dual
), q(str, id) as (
SELECT str, 0 id
FROM fg_Data
UNION ALL
SELECT replace(q.str,symbol,text), fg_rulez.id
FROM q
JOIN fg_rulez
ON q.id = fg_rulez.id - 1
)
SELECT str from q where id = (select max(id) from fg_rulez);
If the number of values to replace is too big or you need to be able to easily maintain it, you could also split the string, use a dictionary table and finally aggregate the results
In the example below I'm assuming that the words in your string are separated with blankspaces and the wordcount in the string will not be bigger than 100 (pivot table cardinality)
with Dict as
(select '{1}' String, 'myfirstval' Repl from dual
union all
select '{2}' String, 'mysecondval' Repl from dual
union all
select '{3}' String, 'mythirdval' Repl from dual
union all
select '{Nth}' String, 'myNthval' Repl from dual
)
,MyStrings as
(select 'This is the first example {1} ' Str, 1 strnum from dual
union all
select 'In the Second example all values are shown {1} {2} {3} {Nth} ', 2 from dual
union all
select '{3} Is the value for the third', 3 from dual
union all
select '{Nth} Is the value for the Nth', 4 from dual
)
-- pivot is used to split the stings from MyStrings. We use a cartesian join for this
,pivot as (
Select Rownum Pnum
From dual
Connect By Rownum <= 100
)
-- StrtoRow is basically a cartesian join between MyStings and Pivot.
-- There as many rows as individual string elements in the Mystring Table
-- (Max = Numnber of rows Mystring table * 100).
,StrtoRow as
(
SELECT rownum rn
,ms.strnum
,REGEXP_SUBSTR (Str,'[^ ]+',1,pv.pnum) TXT
FROM MyStrings ms
,pivot pv
where REGEXP_SUBSTR (Str,'[^ ]+',1,pv.pnum) is not null
)
-- This is the main Select.
-- With the listagg function we group the string together in lines using the key strnum (group by)
-- The NVL gets the translations:
-- if there is a Repl (Replacement from the dict table) then provide it,
-- Otherwise TXT (string without translation)
Select Listagg(NVL(Repl,TXT),' ') within group (order by rn)
from
(
-- outher join between strings and the translations (not all strings have translations)
Select sr.TXT, d.Repl, sr.strnum, sr.rn
from StrtoRow sr
,dict d
where sr.TXT = d.String(+)
order by strnum, rn
) group by strnum
If you are doing this inside of a select, you can just piece it together, if your replacement values are columns, using string concatenation.