Yes, there is a method max with 13 overloads, none it's simply the name of the column. Something can post an example in VB.NET?
VB.NET: maxField = SomeTableClass.All().Max(Function(p As SomeTableClass) p.someField).
Is an option. Using LINQ can be
(From x in SomeTableClass.All() select x.someField).Max()
(Select max(coloumnName) from TableName)
...and you can add conditions or order by after this select statement.
Related
I am trying to insert in database(Oracle) in python with cx_oracle. I need to select from table and insert into another table.
insert_select_string = "INSERT INTO wf_measure_details(PARENT_JOB_ID, STAGE_JOB_ID, MEASURE_VALS, STEP_LEVEL, OOZIE_JOB_ID, CREATE_TIME_TS) \
select PARENT_JOB_ID, STAGE_JOB_ID, MEASURE_VALS, STEP_LEVEL, OOZIE_JOB_ID, CREATE_TIME_TS from wf_measure_details_stag where oozie_job_id = '{0}'.format(self.DAG_id)"
conn.executemany(insert_select_string)
conn.commit()
insert_count = conn.rowcount
But I am getting below error. I do not have select parameter of data as data is getting from select query.
Required argument 'parameters' (pos 2) not found
Please suggest how to solve this
As mentioned by Chris in the comments to your question, you want to use cursor.execute() instead of cursor.executemany(). You also want to use bind variables instead of interpolated parameters in order to improve performance and reduce security risks. Take a look at the documentation. In your case you would want something like this (untested):
cursor.execute("""
INSERT INTO wf_measure_details(PARENT_JOB_ID, STAGE_JOB_ID,
MEASURE_VALS, STEP_LEVEL, OOZIE_JOB_ID, CREATE_TIME_TS)
select PARENT_JOB_ID, STAGE_JOB_ID, MEASURE_VALS, STEP_LEVEL,
OOZIE_JOB_ID, CREATE_TIME_TS
from wf_measure_details_stag
where oozie_job_id = :id""",
id=self.DAG_id)
I have the following query in M:
= Table.Combine({
Table.Distinct(Table.SelectColumns(Tab1,{"item"})),
Table.Distinct(Table.SelectColumns(Tab2,{"Column1"}))
})
Is it possible to get it working without prior changing column names?
I want to get something similar to SQL syntax:
select item from Tab1 union all
select Column1 from Tab2
If you need just one column from each table then you may use this code:
= Table.FromList(List.Distinct(Tab1[item])
& List.Distinct(Tab2[Column1]))
If you use M (like in your example or the append query option) the columns names must be the same otherwise it wont work.
But it works in DAX with the command
=UNION(Table1; Table2)
https://learn.microsoft.com/en-us/dax/union-function-dax
It's not possible in Power Query M. Table.Combine make an union with columns that match. If you want to keep all in the same step you can add the change names step instead of tap2 like you did with Table.SelectColumns.
This comparison of matching names is to union in a correct way.
Hope you can manage in the same step if that's what you want.
Is it possible to do a bulk insert with Sitecore Rocks? Something along the lines of SQL's
INSERT INTO TABLE1 SELECT COL1, COL2 FROM TABLE2
If so, what is the syntax? I'd like to add an item under any other item of a given template type.
I've tried using this syntax:
insert into (
##itemname,
##templateitem,
##path,
[etc.]
)
select
'Bulk-Add-Item',
//*[##id='{B2477E15-F54E-4DA1-B09D-825FF4D13F1D}'],
Path + '/Item',
[etc.]
To this, Query Analyzer responds:
"values" expected at position 440.
Please note that I have not found a working concatenation operator. For example,
Select ##item + '/value' from //sitecore/content/home/*
just returns '/value'. I've also tried ||, &&, and CONCATENATE without success.
There is apparently a way of doing bulk updates with CSV, but doing bulk updates directly from Sitecore Query Analyzer would be very useful
Currently you cannot do bulk inserts, but it is a really nice idea. I'll see what I can do.
Regarding the concatenation operator, this following works in the Query Analyzer:
select #Text + "/Value" from /sitecore/content/Home
This returns "Welcome to Sitecore/Value".
The ##item just returns empty, because it is not a valid system attribute.
Okay I know this is really stupid.But how to i write SELECT Column1 FROM tablename
I know i can use Court.objects.all()[0] to get just one row.But how do I get one column only(the whole column values).Am I missing something?
Also in Court.objects.all()[0] isn't it first retrieved and then spliced.So isn't it kinda inefficient.
Court.objects.values_list('column_name', flat=True)
And if you write Court.objects.all()[0] only one row is retireved.
Court.objects.only('column_name')
I have a select field that fetch from an entity
and I would like to customize completely my select by choosing the table the id is picked from
(here I would like to select t.id instead of tl.id as the select value)
return $er->createQueryBuilder('tl')
->addSelect('l')
->addSelect('t')
->leftJoin('tl.lang', 'l')
->leftJoin('tl.type', 't')
->where('l.isDefault = 1')
->orderBy('tl.name', 'ASC');
Due to my tables, I can't simply fetch the table t, I have to use tl
Your query is not according to the syntax defined in Doctrine 2 QueryBuilder: http://www.doctrine-project.org/docs/orm/2.0/en/reference/query-builder.html
Your query might work in Doctrine 1.2 but in Doctrine 2 you should build your query according to the syntax defined in the link I posted above.
For example ->addSelect('l') is not being used in Doctrine 2 anymore. It has become ->add('select', 'l').
You don't have to set different alias for your column. It'll be hydrated as column of the related entity.