I've got this code here:
select DealID,ExternalReference,order_number, sales_rule
from flostream.orders
join mobileheads.surveys on flostream.orders.ExternalReference = mobileheads.surveys.order_number
//where DealID is null
What I want to happen is IF DealID (in flostream.orders) is null, replace it with sales_rule (in mobileheads.surveys)
Please let me know if this can be done with Bigquery or if you can think of some workaround?
Thanks!
Nik
You need
IFNULL(expr, null_default)
If expr is not null, returns expr, otherwise returns null_default.
You should read more about them in the manual.
Your query would look like:
SELECT IFNULL(DealID,sales_rule) as DealID,
ExternalReference,
order_number,
sales_rule
FROM flostream.orders
JOIN mobileheads.surveys ON flostream.orders.ExternalReference = mobileheads.surveys.order_number
Related
I have event table in which there are two fields named as sport, event_name .
This was values such as:
{sport:"Athletic"; event_name:"Athletic 100 meter"}
What I want is to use replace function to replace the string in event_name that matches string in sport with nothing.
so the final output will be such :
{sport:"Athletic"; event_name:"100 meter"}
And I was also joined it with other table so only ID that are to be replace are also present in other table
so I used in this way in following code. But it should an error : "Expected item: < result-column > " . Thank you
SELECT
ae.id ,
ae.city AS event_city,
ae.sport,
REPLACE(ae.event,ae.sport,' ') AS event_name ,
FROM
athlete_events ae
inner join
players_personalinfo pp on
pp.id=ae.id
You need to define the table aliases:
SELECT ae.id AS event_id, ae.city AS event_city, ae.sport,
REPLACE(ae.event, ae.sport, ' ') AS event_name ,
ae.event
FROM athlete_events ae JOIN
players_personalinfo pp
ON pp.id = ae.id;
I would also advise you to trim the result:
TRIM(REPLACE(ae.event, ae.sport, ' ')) AS event_name,
This will remove leading and trailing spaces.
The REPLACE function is case sensitive. Try to check the data to make sure that the capitalization of each is the same.
The prior answers work, but you need to modify one of the field names in your query. In your description, you mentioned the field name is "event_name", but in your query, you reference just "event" (ae.event).
Also, I'm a little surprised that an event_id would join to a player's profile id. Seems a bit odd.
At any rate, I confirmed this SQL works in both postgres and oracle databases...
SELECT
ae.id AS event_id,
ae.city AS event_city,
ae.sport,
ae.event_name as event_name_original
REPLACE(ae.event_name,ae.sport,' ') AS event_name_kinda_ugly,
TRIM(REPLACE(ae.event_name,ae.sport,' ')) AS event_name_clean
FROM
athlete_events ae
inner join
players_personalinfo pp on pp.id=ae.id
I have a SQL query where I am trying to replace null results with zero. My code is producing an error
[1]: ORA-00923: FROM keyword not found where expected
I am using an Oracle Database.
Select service_sub_type_descr,
nvl('Single-occupancy',0) as 'Single-occupancy',
nvl('Multi-occupancy',0) as 'Multi-occupancy'
From
(select s.service_sub_type_descr as service_sub_type_descr, ch.claim_id,nvl(ci.item_paid_amt,0) as item_paid_amt
from table_1 ch, table_" ci, table_3 s, table_4 ppd
where ch.claim_id = ci.claim_id and ci.service_type_id = s.service_type_id
and ci.service_sub_type_id = s.service_sub_type_id and ch.policy_no = ppd.policy_no)
Pivot (
count(distinct claim_id), sum(item_paid_amt) as paid_amount For service_sub_type_descr IN ('Single-occupancy', 'Multi-occupancy')
)
This expression:
nvl('Single-occupancy',0) as 'Single-occupancy',
is using an Oracle bespoke function to say: If the value of the string Single-occupancy' is not null then return the number 0.
That logic doesn't really make sense. The string value is never null. And, the return value is sometimes a string and sometimes a number. This should generate a type-conversion error, because the first value cannot be converted to a number.
I think you intend:
coalesce("Single-occupancy", 0) as "Single-occupancy",
The double quotes are used to quote identifiers, so this refers to the column called Single-occupancy.
All that said, fix your data model. Don't have identifiers that need to be quoted. You might not have control in the source data but you definitely have control within your query:
coalesce("Single-occupancy", 0) as Single_occupancy,
EDIT:
Just write the query using conditional aggregation and proper JOINs:
select s.service_sub_type_descr, ch.claim_id,
sum(case when service_sub_type_descr = 'Single-occupancy' then item_paid_amt else 0 end) as single_occupancy,
sum(case when service_sub_type_descr = 'Multi-occupancy' then item_paid_amt else 0 end) as multi_occupancy
from table_1 ch join
table_" ci
on ch.claim_id = ci.claim_id join
table_3 s
on ci.service_type_id = s.service_type_id join
table_4 ppd
on ch.policy_no = ppd.policy_no
group by s.service_sub_type_descr, ch.claim_id;
Much simpler in my opinion.
for column aliases, you have to use double quotes !
don't use
as 'Single-occupancy'
but :
as "Single-occupancy",
Sorry for the long title.
I have a statement which needs to grab all the columns from one row from BinConfig:
SELECT *
FROM BinConfig WITH(NOLOCK)
WHERE IssuerKey = #IssuerKey
But I also need to grab a single column from one row from CardRangeGroup also based on that IssuerKey column.
What I've tried:
SELECT
BinConfig.*, CardRangeGroup.Name
FROM
BinConfig
JOIN
CardRangeGroup WITH(NOLOCK)
WHERE
#IssuerKey = BinConfig.IssuerKey
AND #IssuerKey = CardRangeGroup.IssuerKey
Which gives me a syntax error near WHERE. I've tried to find resources online, but everywhere I look I can't find anything explaining how to select rows based on a passed in variable. Any help?
You need to specify how the tables should be joined. Try this:
SELECT BinConfig.*, CardRangeGroup.Name
FROM BinConfig
JOIN CardRangeGroup ON BinConfig.IssuerKey = CardRangeGroup.IssuerKey
WHERE #IssuerKey = CardRangeGroup.IssuerKey
The with(nolock) might not be needed (or a good idea) so I removed it.
try this , you don't need to use where
SELECT BinConfig.*, CardRangeGroup.Name FROM BinConfig JOIN
CardRangeGroup
ON CardRangeGroup.IssuerKey = BinConfig.IssuerKey AND #IssuerKey = CardRangeGroup.IssuerKey
This is the only place that I get all answer ;)
I want to select :
SELECT
RTRIM(LTRIM(il.Num_bloc)) AS Bloc,
RTRIM(LTRIM(il.num_colis)) AS Colis,
cd.transporteur AS Coursier,
cd.origine AS Origine,
cd.destination AS Destinataire,
cd.adresse AS [Adresse Destinataire],
cd.poids AS Poids,
il.Signataire, il.num_cin AS CIN, il.date_livraison AS [Date Livraison]
FROM
dbo.cd
INNER JOIN
dbo.il ON cd.bloc = il.Num_bloc AND dbo.cd.colis = dbo.il.num_colis
WHERE
(il.Num_bloc = RTRIM(LTRIM(#ParamBloc)))
AND (il.num_colis = RTRIM(LTRIM(#ParamColis)))
In the way of getting result if the user put ether #ParamBloc or #ParamColis
Try using IsNull() function.
A simple query would go like this
Select * from yourTable
Where
Num_bloc = ISNULL(#ParamBloc, Num_block) AND
num_colis = ISNULL(#ParamColis, num_colis)
The second parameter would make the expression to true if the #parameter Bloc or Colis is null. This query would be useful for all 4 possible combination of these two parameter.
In MySQL, is there a way to set the "total" fields to zero if they are NULL?
Here is what I have:
SELECT uo.order_id, uo.order_total, uo.order_status,
(SELECT SUM(uop.price * uop.qty)
FROM uc_order_products uop
WHERE uo.order_id = uop.order_id
) AS products_subtotal,
(SELECT SUM(upr.amount)
FROM uc_payment_receipts upr
WHERE uo.order_id = upr.order_id
) AS payment_received,
(SELECT SUM(uoli.amount)
FROM uc_order_line_items uoli
WHERE uo.order_id = uoli.order_id
) AS line_item_subtotal
FROM uc_orders uo
WHERE uo.order_status NOT IN ("future", "canceled")
AND uo.uid = 4172;
The data comes out fine, except the NULL fields should be 0.
How can I return 0 for NULL in MySQL?
Use IFNULL:
IFNULL(expr1, 0)
From the documentation:
If expr1 is not NULL, IFNULL() returns expr1; otherwise it returns expr2. IFNULL() returns a numeric or string value, depending on the context in which it is used.
You can use coalesce(column_name,0) instead of just column_name. The coalesce function returns the first non-NULL value in the list.
I should mention that per-row functions like this are usually problematic for scalability. If you think your database may get to be a decent size, it's often better to use extra columns and triggers to move the cost from the select to the insert/update.
This amortises the cost assuming your database is read more often than written (and most of them are).
None of the above answers were complete for me.
If your field is named field, so the selector should be the following one:
IFNULL(`field`,0) AS field
For example in a SELECT query:
SELECT IFNULL(`field`,0) AS field, `otherfield` FROM `mytable`
Hope this can help someone to not waste time.
You can try something like this
IFNULL(NULLIF(X, '' ), 0)
Attribute X is assumed to be empty if it is an empty String, so after that you can declare as a zero instead of last value. In another case, it would remain its original value.
Anyway, just to give another way to do that.
Yes IFNULL function will be working to achieve your desired result.
SELECT uo.order_id, uo.order_total, uo.order_status,
(SELECT IFNULL(SUM(uop.price * uop.qty),0)
FROM uc_order_products uop
WHERE uo.order_id = uop.order_id
) AS products_subtotal,
(SELECT IFNULL(SUM(upr.amount),0)
FROM uc_payment_receipts upr
WHERE uo.order_id = upr.order_id
) AS payment_received,
(SELECT IFNULL(SUM(uoli.amount),0)
FROM uc_order_line_items uoli
WHERE uo.order_id = uoli.order_id
) AS line_item_subtotal
FROM uc_orders uo
WHERE uo.order_status NOT IN ("future", "canceled")
AND uo.uid = 4172;