This is the section of my xml I am trying to modify:
<ORDER ORDER_NAME="10009999"
ORDER_NAME is an attribute.
This is what I have come up with so far and I think it's close, but slightly off.
update table_name set txn_message.modify('replace value of (/ORDER/#ORDER_NAME)[.=1000][1] with "2000"') , txn_status = 1
I want to replace 10009999 with 20009999 (really just something else to make it different so data can be reused, adding a additional character is also fine).
One way is
update t
set txn_message.modify('replace value of (/ORDER/#ORDER_NAME)[1] with concat("2", sql:column("vr"))')
from table_name t
cross apply (
select left(t.txn_message.value('(/ORDER/#ORDER_NAME)[1]','varchar(20)'), 1) vl
, substring (t.txn_message.value('(/ORDER/#ORDER_NAME)[1]','varchar(20)'), 2, 8000) vr
) v
where vl = '1';
Related
I need to update an XML node that contains a specific number. My query works if I hard code in the number (see figure 1), but I would like to make this dynamic by passing through a variable that contains a string (variableToBeReplaced). I currently wrote this (see figure 2) but it isn't reading the variable correctly so no changes are being made to the xml. Does anyone know how I can include a variable in an updatexml() function?
Figure 1
select updateXML(xmltype(xmlbod),'/LpnList/Lpn/LicensePlateNumber[text() = "12345"]','67890').getClobVal() doc
from myTable
where id = '1'
Figure 2
select updateXML(xmltype(xmlbod), '/LpnList/Lpn/LicensePlateNumber[text()= '|| variableToBeReplaced || ']','67890').getClobVal() doc
from myTable
where id = '1'
I was just missing "" around the variable.
select updateXML(xmltype(xmlbod), '/LpnList/Lpn/LicensePlateNumber[text()= "'|| variableToBeReplaced || '"]','67890').getClobVal() doc
from myTable
where id = '1'
All I need to do is simply get one geography value from a table and store it in another table. There is some logic for which row to take from the origin table so it's not just a straight select.
In any of 50 possible variants of this, I get this error when hitting the update to the target table:
Msg 403, Level 16, State 1, Line 1
Invalid operator for data type. Operator equals not equal to, type equals geography.
My SQL looks like this at the moment:
declare
#EquipmentId int
, #CurrentLocationId int
, #CurrentGeoLocation geography
, #LastUpdated datetime
select #EquipmentId =
(
select top 1 EquipmentId
from Equipment
order by EquipmentId
)
select #CurrentLocationId = (select top 1 EquipmentLocationId from EquipmentLocation where EquipmentId = #EquipmentId order by LastUpdated desc)
select #LastUpdated = (select top 1 LastUpdated from EquipmentLocation where EquipmentId = #EquipmentId order by LastUpdated desc)
UPDATE
dbo.Equipment
SET
CurrentLocationDateTime = #LastUpdated
, CurrentGeoLocation = (select GeoLocation from EquipmentLocation where EquipmentLocationId = #CurrentLocationId)
, ModifiedBy = 'system'
, ModifiedByUserId = -1
, ModifiedDate = getdate()
WHERE
EquipmentId = #EquipmentId
I have had CurrentGeoLocation set in a variable of the same type, selected into by the same statement you see in the update.
I have had an #CurrentGeoLocation variable populated by a geography::STGeomFromText as well as geography::Point() function call.
I've used Lat and Long variables to call Point and FromText functions.
All the same result, the above 403 error. I could understand it somewhat when I was concatenating various permutations of the GeomFromText function that needs well known text format for the point parameter, but field value to field value is killing me, as is the fact that I get this error no matter how I try to give the origin point data to the target table.
Thoughts?
Update:
I've been experimenting a little and found that the following works just fine:
declare #GL geography
select #GL = (select GeoLocation from EquipmentLocation where EquipmentLocationId = 25482766)
print convert(varchar, #GL.Lat)
print convert(varchar, #GL.Long)
update Equipment set CurrentGeoLocation = geography::Point(#GL.Lat, #GL.Long, 4326)-- #NewGL where EquipmentId = 10518
But then when I apply this plan to the original script, I'm back to the same error.
The data in the test is working off the exact same records as in the original script. The original script is working off a collection of EquipmentIds, on the first one, I encounter this problem. The short test script uses the same EquipmentLocationId and EquipemntId that are the selected values used to update the first Equipment record in my collection.
Solved!
The error had nothing to do with the geography type as SQL reported. By pulling items in and out of the update statement in an effort to isolate why I still get the error even if I save everything but CurrentGeoLocation and then another update for the geography, I found that CurrentLocationDateTime (datetime, null) was the culprit. Deleted the column, added it back. Problem solved. Original script works as expected.
Don't know what happened to that datetime column that caused it to throw errors against a geometry type, but it's fixed.
I have a SQL Server table with an XML column, and it contains data something like this:
<Query>
<QueryGroup>
<QueryRule>
<Attribute>Integration</Attribute>
<RuleOperator>8</RuleOperator>
<Value />
<Grouping>OrOperator</Grouping>
</QueryRule>
<QueryRule>
<Attribute>Integration</Attribute>
<RuleOperator>5</RuleOperator>
<Value>None</Value>
<Grouping>AndOperator</Grouping>
</QueryRule>
</QueryGroup>
</Query>
Each QueryRule will only have one Attribute, but each QueryGroup can have many QueryRules. Each Query can also have many QueryGroups.
I need to be able to pull all records that have one or more QueryRule with a certain attribute and value.
SELECT *
FROM QueryBuilderQueries
WHERE [the xml contains any value=X where the attribute is either Y or Z]
I've worked out how to check a specific QueryRule, but not "any".
SELECT
Query
FROM
QueryBuilderQueries
WHERE
Query.value('(/Query/QueryGroup/QueryRule/Value)[1]', 'varchar(max)') like 'UserToFind'
AND Query.value('(/Query/QueryGroup/QueryRule/Attribute)[1]', 'varchar(max)') in ('FirstName', 'LastName')
You can use two exist(). One to check the value and one to check Attribute.
select Q.Query
from dbo.QueryBuilderQueries as Q
where Q.Query.exist('/Query/QueryGroup/QueryRule/Value/text()[. = "UserToFind"]') = 1 and
Q.Query.exist('/Query/QueryGroup/QueryRule/Attribute/text()[. = ("FirstName", "LastName")]') = 1
If you really want the like equivalence when you search for a Value you can use contains().
select Q.Query
from dbo.QueryBuilderQueries as Q
where Q.Query.exist('/Query/QueryGroup/QueryRule/Value/text()[contains(., "UserToFind")]') = 1 and
Q.Query.exist('/Query/QueryGroup/QueryRule/Attribute/text()[. = ("FirstName", "LastName")]') = 1
According to http://technet.microsoft.com/pl-pl/library/ms178030%28v=sql.110%29.aspx
"The XQuery must return at most one value"
If you are quite certain that for example your XML has let's say maximum 10 QueryRules you could maybe use WHILE to loop everything while droping your results into temporary table?
maybe below can help you anyway
CREATE TABLE #temp(
Query type)
DECLARE #i INT
SET #i = 1
WHILE #i >= 10
BEGIN
INSERT INTO #temp
SELECT
Query
FROM QueryBuilderQueries
WHERE Query.value('(/Query/QueryGroup/QueryRule/Value)[#i]', 'varchar(max)') LIKE 'UserToFind'
AND Query.value('(/Query/QueryGroup/QueryRule/Attribute)[#i]', 'varchar(max)') IN ('FirstName', 'LastName')
#i = #i + 1
END
SELECT
*
FROM #temp
It's a pity that the SQL Server (I'm using 2008) does not support some XQuery functions related to string such as fn:matches, ... If it supported such functions, we could query right inside XQuery expression to determine if there is any. However we still have another approach. That is by turning all the possible values into the corresponding SQL row to use the WHERE and LIKE features of SQL for searching/filtering. After some experiementing with the nodes() method (used on an XML data), I think it's the best choice to go:
select *
from QueryBuilderQueries
where exists( select *
from Query.nodes('//QueryRule') as v(x)
where LOWER(v.x.value('(Attribute)[1]','varchar(max)'))
in ('firstname','lastname')
and v.x.value('(Value)[1]','varchar(max)') like 'UserToFind')
I have an XML data type column called "tags".
In that, I am storing a collection, like so:
<ArrayOfString>
<string>personal</string>
<string>travel</string>
<string>gadgets</string>
<string>parenting</string>
</ArrayOfString>
I want to select all the rows, that have one of the values that I am looking for: for example, I want to select all rows in the table that have a tag "travel".
I know that this works, if I know the index of the value I am looking for:
select * from posts
where tags.value('(/ArrayOfString/string)[1]', 'nvarchar(1000)') = 'travel'
but this query works only if the tag "travel" is the 2nd item in the nodes. How do I check if a value exists, irrespective of the position it is in?
select *
from tags
where tags.exist('/ArrayOfString/string[. = "travel"]') = 1
Or like this if you want to check against a variable.
declare #Val varchar(10)
set #Val = 'travel'
select *
from tags
where tags.exist('/ArrayOfString/string[. = sql:variable("#Val")]') = 1
You can try something like this:
SELECT
*
FROM
dbo.Posts
WHERE
tags.exist('/ArrayOfString/string/text()[. = "travel"]') = 1
This will list all the rows that have "travel" in one of the strings in your XML
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;