My following query is working..
SELECT d.pub_user.userid FROM d where d.pri_data.user.email="xxx#yyy.zzz"
This gives me result as below..
[
{
"userid": "1e4491ef27097262"
},.....
]
The following query is also working..
SELECT * FROM c WHERE c.pub_user.userid IN ("1e4491ef27097262")
But, when I try the following, it does not work..
SELECT * FROM c WHERE c.pub_user.userid IN (SELECT d.pub_user.userid FROM d where d.pri_data.user.email="xxx#yyy.zzz")
It gives an error.. Syntax error, incorrect syntax near 'SELECT'
Any help is sincerely appreciated.
Thanks
subquery is currently not supported. As per this answer, you can try to leverage a stored procedure.
When one start hitting joins or subquery is an early indicator that your data document structure is not optimal. I am however wondering why you cannot query by email without subquery in your final example. Like this
SELECT * FROM c WHERE c.pri_data.user.email="xxx#yyy.zzz"
If this is not possible because these data are in separate documents perhaps email could be added to the docments.
Related
I would like to select Name and Code from 'INS" table and Phone_Number from "MC" table, When I execute this gremlin query this is just returning the last select item which is Phone_Number. Not getting Name and Code from INS table.
How to use two select in a single gremlin query, any help would be really appreciated.
:> graph.traversal().V().hasLabel('Product').has('Product_ID','39401').has('Customer_ID','98833838').out('has_Contact').as('MC').out('has_a_insurance').as('INS').select('INS').valueMap('Name','Code').select('MC').valueMap('Phone_Number')
Expected output is:
==>{INS={Name=[383838], Code=[98]}, MC={Phone_Number=[8383838383]}}
==>{INS={Name=[300333], Code=[32]}, MC={Phone_Number=[4830930303]}}
==>{INS={Name=[748332], Code=[32]}, MC={Phone_Number=[4537373728]}}
Thanks
You can use project:
g.V().hasLabel('Product').has('Product_ID','39401').has('Customer_ID','98833838')
.out('has_Contact').as('MC').out('has_a_insurance').as('INS')
.project('INS', 'MC')
.by(select('INS').valueMap('Name','Code'))
.by(select('MC').valueMap('Phone_Number'))
I'm experiencing a really odd result when I do a count in X++, something I've not experienced before. I am performing what I thought was a really simply count query, but I can't seem to get the result I am after.
WMSOrderTrans orderTrans;
WMSOrderTrans orderTransChk;
;
select count(RecId) from orderTrans group by shipmentid where orderTrans.inventTransRefId == 'XXXXXX';
info(strFmt('Count is %1', orderTrans.RecId));
while select orderTransChk group by shipmentid where orderTransChk.inventTransRefId == 'XXXXXX' {
info(strFmt('Shipment is %1', orderTransChk.shipmentId));
}
The data set that I am selecting all have only 1 shipmentid, so the first select I am expecting a count of 1, instead I get 4 (which is how many lines for that transrefid exist). If I change the count from 'RecId' to 'ShipmentId', then instead of the count, I get actual shipmentId. I simply want it to return the count of the records, which is what I believe I've asked it to do.
I really can't see what I am missing.
In the while select, I get what I expect (the shipmentid), only 1 infolog message for the loop. This tells me that the group by with the where clause is working, but it doesn't explain why the first count select statement isn't behaving as I would expect.
For reference, this is AX2012 R1 system.
For anyone who might be interested in knowing my answer, it's tied up with Jeff's response. At the end of the day, I didn't look at data well enough, and the query returned the correct results. I initially thought there were a number of unique shipments, but I was wrong. My expected result was erroneous. There were 4 lines in the file, but the lines were unique for the item, not the shipment. They were all on the same shipment. So really, my own fault, it goes to show that one really needs to look at the data closely.
Thanks to all that responded, greatly appreciated.
I would try a database sync, then restarting the AOS. I don't see anything obviously wrong, so it points to bouncing everything.
Try getting the select statement via this method (from memory so check syntax) and then review the query against SQL directly. It uses generateOnly.
select generateOnly count(RecId) from orderTrans group by shipmentid where orderTrans.inventTransRefId == 'XXXXXX';
info(orderTrans.getSQLStatement());
If I understand what you try to achieve, you'd like to get something like this SQL query:
select count(distinct shipmentid) from orderTrans
where inventTransRefId = 'XXXXXX'
The 'distinct' keyword is not available in AX select command. The group by clause will allow you to iterate all distinct values but not to use an aggregate on top of it.
You may use a sql connection to push the exact sql command you want.
In AX, aggregate values are stores in the field used: Count(RecId), the count will go in the recid field otherwise the system may need to add new field on the buffer on the fly. I don't think you can aggregate on the group by clause as it's important to have its value.
You can try (I don't have an AX to test it) to use a query:
Query query = new Query();
QueryRun queryRun;
QueryBuildDataSource qbd;
qbd = query.addDataSource(tablenum(OrderTrans));
qbd.addRange(fieldNum(OrderTrans, InventTransId)).value("xxxx");
qbd.addSortField(fieldNum(OrderTrans, ShipmentId));
qbd.SortOrder(SortOrder::GroupBy);
queryRun = new QueryRun(query);
info(strfmt("Total Records in Query %1",SysQuery::countTotal(queryRun)));
Please help with the error ORA-01427. I am using spring3-JPA2 and the following query throws out ORA-01427.
I need to understand which part of the query is treated as a subquery. Or is it the view code which is throwing it? Please note it happens only for a couple of records we test with.
SELECT *
FROM VW_GET_GROUP_QUEUE taskgroup
WHERE taskgroup.COMPONENT_ID=?1
AND taskgroup.ROLE_CODE=?2
AND ((taskgroup.WORK_ITEM_TYPE LIKE ?3
OR taskgroup.WORK_ITEM_TYPE IS NULL))
AND taskgroup.SOEID=?4
AND ROWNUM=1
I have a trivial issue that I can't resolve. Currently our app uses Linq to retrieve data and get a basic integer value of the row count. I can't form a query that gives back a count without a 'select i'. I don't need the select, just the count(*) response. How do I do this? Below is a sample:
return (from io in db._Owners
where io.Id == Id && io.userId == userId
join i in db._Instances on io.Id equals i.Id **select i**).Count()
;
The select i is fine - it's not actually going to be fetching any data back to the client, because the Count() call will be translated into a Count(something) call at the SQL side.
When in doubt, look at the SQL that's being generated for your query, e.g. with the DataContext.Log property.
Using the LINQ query syntax requires a select statement. There's no way around that.
That being said, the statement will get transformed into a COUNT()-based query; the select i is there only to satisfy the expression system that underlies the LINQ query providers (otherwise the type of the expression would be unknown).
Including the select will not affect the performance here because the final query will get translated into SQL. At this point it will be optimized and will be like select (*) from ......
I want to get the number of selected rows as well as the selected data. At the present I have to use two sql statements:
one is
select * from XXX where XXX;
the other is
select count(*) from XXX where XXX;
Can it be realised with a single sql string?
I've checked the source code of sqlite3, and I found the function of sqlite3_changes(). But the function is only useful when the database is changed (after insert, delete or update).
Can anyone help me with this problem? Thank you very much!
SQL can't mix single-row (counting) and multi-row results (selecting data from your tables). This is a common problem with returning huge amounts of data. Here are some tips how to handle this:
Read the first N rows and tell the user "more than N rows available". Not very precise but often good enough. If you keep the cursor open, you can fetch more data when the user hits the bottom of the view (Google Reader does this)
Instead of selecting the data directly, first copy it into a temporary table. The INSERT statement will return the number of rows copied. Later, you can use the data in the temporary table to display the data. You can add a "row number" to this temporary table to make paging more simple.
Fetch the data in a background thread. This allows the user to use your application while the data grid or table fills with more data.
try this way
select (select count() from XXX) as count, *
from XXX;
select (select COUNT(0)
from xxx t1
where t1.b <= t2.b
) as 'Row Number', b from xxx t2 ORDER BY b;
just try this.
You could combine them into a single statement:
select count(*), * from XXX where XXX
or
select count(*) as MYCOUNT, * from XXX where XXX
To get the number of unique titles, you need to pass the DISTINCT clause to the COUNT function as the following statement:
SELECT
COUNT(DISTINCT column_name)
FROM
'table_name';
Source: http://www.sqlitetutorial.net/sqlite-count-function/
For those who are still looking for another method, the more elegant one I found to get the total of row was to use a CTE.
this ensure that the count is only calculated once :
WITH cnt(total) as (SELECT COUNT(*) from xxx) select * from xxx,cnt
the only drawback is if a WHERE clause is needed, it should be applied in both main query and CTE query.
In the first comment, Alttag said that there is no issue to run 2 queries. I don't agree with that unless both are part of a unique transaction. If not, the source table can be altered between the 2 queries by any INSERT or DELETE from another thread/process. In such case, the count value might be wrong.
Once you already have the select * from XXX results, you can just find the array length in your program right?
If you use sqlite3_get_table instead of prepare/step/finalize you will get all the results at once in an array ("result table"), including the numbers and names of columns, and the number of rows. Then you should free the result with sqlite3_free_table
int rows_count = 0;
while (sqlite3_step(stmt) == SQLITE_ROW)
{
rows_count++;
}
// The rows_count is available for use
sqlite3_reset(stmt); // reset the stmt for use it again
while (sqlite3_step(stmt) == SQLITE_ROW)
{
// your code in the query result
}