Oracle SQL insert into with With clause
112,989
Solution 1
You may use as many 'helper_tables' as you wish.
create table t(helper1 varchar2(50) , helper2 varchar2(50) , dataElement varchar2(50) );
insert into t(helper1, helper2, dataelement)
with
de as(select level lvl from dual connect by level <10)
,h1 as (select lvl, lvl/1.5 hp from de)
,h2 as (select lvl, lvl/2 hp2 from de)
select h1.hp , h2.hp2, de.lvl
from de
inner join
h1 on de.lvl = h1.lvl
inner join
h2 on de.lvl = h2.lvl
/
With this in mind, you may be able to do all of your joins via normal joining of the tables to the master table
Solution 2
INSERT
INTO dummy1
WITH helper_table AS
(
SELECT *
FROM dummy2
)
SELECT t.a
FROM helper_table t
WHERE t.a = 'X'
Solution 3
You can do something like
INSERT INTO dummy1
WITH helper_table AS (
SELECT *
FROM dummy2
)
SELECT t.a
FROM helper_table t
WHERE t.a = 'X';
For your updated query
INSERT
INTO dummy values (a,b) //more values
WITH helper_table AS
(
SELECT *
FROM dummy2
),
helper_table2 AS //from more tables
(
SELECT *
FROM dummy3
)
SELECT t.value as a, t2.value as b
FROM helper_table t
join helper_table t2 on t.value = t2.value //some join
WHERE t.value = 'X' and t2.value = 'X' //other stuff
Comments
-
user2424380 about 4 years
I'm new to sql, so maybe it is a dumb question, but is there any possibility to use With clause with Insert Into? Or are there any common workarounds? I mean something like this:
With helper_table As ( Select * From dummy2 ) Insert Into dummy1 Values (Select t.a From helper_table t Where t.a = 'X' );
Thx!
My example is too dummy, so I add some extended code (thx for the answers so far).
INSERT INTO dummy values (a,b) //more values WITH helper_table AS ( SELECT * FROM dummy2 ) WITH helper_table2 AS //from more tables ( SELECT * FROM dummy3 ) SELECT t.value as a, t2.value as b FROM helper_table t join helper_table t2 on t.value = t2.value //some join WHERE t.value = 'X' and t2.value = 'X' //other stuff
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user2424380 about 13 yearsI think my example was too dummy. I have many values, and I would like to use a different helper table to each value. Is there any souliton for that? Thx and sorry!
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Quassnoi about 13 years@user: please post some sample data and expected output.
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Mike Williamson over 12 yearsCan this same sort of thing be done with Temporary Tables? E.g., instead of "create table t...", using "create table #t...". I have a fairly complex query I need to make, part of which needs to remain beyond just the immediate query, which is why I need the temporary table, but I don't want to write anything permanent. Thanks!
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Harrison over 12 years@MikeWilliamson since the #t (temp table) as you have described it is a SQL Server temp table, this is an oracle table. I can attest that the above statement would work in an oracle global temp table, but this is a different beast than the SQL Server Temp table. I can only recommend you try it out, if the above syntax works in SQL Server for a normal table insert, I would expect it to work the same (note "expect" does not mean it will, nor have I tried it!)
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ohmusama almost 10 yearsIn SQL Server 2008R2 you cannot use this syntax with mem tables (ie
declare @t table (a int, b int, c int)
)