dbs | SQL Builder 工具,给爱拼 SQL 的你。 | SQL Database library
kandi X-RAY | dbs Summary
kandi X-RAY | dbs Summary
SQL Builder 工具, 不是 ORM。.
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Top functions reviewed by kandi - BETA
- scan rows into dest
- GetFields returns all the fields of a struct .
- scanRowContext runs the sql query using the provided builder .
- get all fields of objValue
- scanRows scans a row into a struct .
- scanContext runs the sql statement using the provided context .
- getField gets all fields from destValue .
- in returns a statement .
- execContext executes the given builder using the given context
- queryContext runs the given Builder with the given context .
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Trending Discussions on dbs
QUESTION
I've the databases db1
and db2
. The schemas of both DBs should be created with the same migration script.
The Django docs mention DATABASE_ROUTERS and RunPython, but I didn't manage to get it working so far. The function is called, but migrations.CreateModel()
has no impact when called from the function: the table is not created.
Migration script:
...ANSWER
Answered 2021-Jun-14 at 16:41migrations.CreateModel
does not create a model in the database upon instantiation. It is supposed to be present in the operations
list where the migrations system will then use it to create the model. Furthermore you shouldn't be writing this migration manually anyway! Just write the code for the model in models.py
:
QUESTION
I have been trying to update a record in the database in window form but each time I click the update button I get this error.
System.Data.Entity.Infrastructure.DbUpdateException: 'An error occurred while updating the entries. See the inner exception for details.' SqlException: Violation of PRIMARY KEY constraint 'PK_ad_gb_rsm'. Cannot insert duplicate key in object 'dbo.ad_gb_rsm'. The duplicate key value is (100001). The statement has been terminated.
Below is the LINQ code I am using
...ANSWER
Answered 2021-Jun-11 at 11:11The inner exception says everything:
SqlException: Violation of PRIMARY KEY constraint 'PK_ad_gb_rsm'. Cannot insert duplicate key in object 'dbo.ad_gb_rsm'. The duplicate key value is (100001)
Your code tried to perform an INSERT
operation, but failed because it violates the unique constraint of the primary key.
The root cause of your problem is the following line:
QUESTION
In my code, multiprocessing Process is being used to spawn multiple impdp jobs (imports) simultaneously and each job generates a log file with the dynamic name:
...'/DP_IMP_' + DP_PDB_FULL_NAME[i] + '' + DP_WORKLOAD + '' + str(vardate) + '.log'
ANSWER
Answered 2021-Jun-11 at 22:34You should create some kind of structure where you store the needed variables and process handles. Block with join after that loop until all subprocesses are finished and then work with the resulted files.
QUESTION
I am using the CVXR
modelling package to solve a convex optimization problem. I know for sure that the problem is convex and that it follows the DCP rules, but if I check the DCP rules using CVXR
it returns False
. However, if I take the exact same problem and check it using CVXPY
it returns True
(as expected)
What is happening here? I attach a minimal reproducible example of this behavior in R and Python:
R code usingCVXR
...ANSWER
Answered 2021-Jun-07 at 18:48The problem is the negative eigenvalue in the R matrix. If you fix that by setting it to zero, say, then it satisfies the dcp condition. I have also fixed the syntax errors in the code in the question and removed the redundant :: . Another possibility (not shown) is to use nearest_spd
in the pracma package to adjust the R matrix.
QUESTION
mongodump
was used long time ago to create a backup, now in order to restore the database for a Meteor app, this command was used:
ANSWER
Answered 2021-Jun-03 at 17:21When you run mongorestore
as is, it will connect to the mongo instance running on port 27017 on your local machine (if any). That's what you would use in production. Since the restore succeeded, it must be that you have such an instance running. In that case, run mongo ais2
to connect to that instance and db.
In development, meteor runs its own mongo instance on port 3001 (assuming you used meteor on the default port 3000). When you run meteor mongo
that is the instance your shell will connect to. If you want to restore into that, then rerun your command with the port specified:
QUESTION
I've used Mongoose for a couple of my projects, but once I attempted to create the Database this time with Mongoose, it shares no errors but does not create the intended "user" database.
As an example,
...ANSWER
Answered 2021-Jun-03 at 01:23I think the problem is because you forgot two things in the configuration.
- You forgot the: useCreateIndex: true
- useFindAndModify: false
So the final code should look like this:
QUESTION
I use Azure SQL DB (Single DB, Basic, DTU, Provisioned).
There are two different DBs, say, DB-1
and DB-2
.
For DB-1
, I have Admin access.
For DB-2
, I have read-only access. (No access to create new table.)
The two DBs have no links. I access them using SSMS.
The requirement:
- In
DB-2
, there is a table[EMP]
with 1000 rows. - Only 250 of them to be exported and inserted into a new table in
DB-1
(with all columns).
How can I achieve in SSMS?
Thanks in advance!
...ANSWER
Answered 2021-Jun-01 at 22:15There is no way to do this in only SSMS. If this is an ad-hoc project, I would query the records, copy and paste them into Excel, configure them in Excel for an insert statement, then paste them into an insert statement against DB-1.
If this is something that will need to be sustainable, I'd recommend looking into Azure Data Factory.
QUESTION
I have a role with this permission:
path-prefix[/mydb] and (method[PUT] or method[POST] or method[GET])
I'm trying to create a collection in this database following this doc: https://restheart.org/docs/mgmt/dbs-collections/
So, I wrote using postman this:
method: PUT url: https://myhost.mydomain/mydb/newcollection
User and password are ok. The user has this role. GET works.
But the PUT return 403 (not 401, 403).
RestHeart (v6).
Any tips to solve this?
...ANSWER
Answered 2021-May-31 at 11:35Solved.
The version 6 changed somethings in security. Now some permissions have to be set explicitly, in this case, to allow management requests:
QUESTION
I'm begging you for help guys as I am facing a really serious issue here. I have a simple code to export ms access (2016\2013) queries results into excel spreadsheets that has worked just fine for years.
This is the code (not posting all variables definitions I've on top of it):
...ANSWER
Answered 2021-May-20 at 15:23I just ran into this exact issue yesterday. The webpage for a Windows Update that was installed yesterday had a clue in it. It seems a new security related registry key was added to Jet/ACE to prevent connections to remote sources. Not sure why crosstab queries in a TransferSpreadsheet Export are affected (must be behind the scenes in how transfer spreadsheet works), but I can successfully run my command with this update uninstalled.
Here's the link to the update. It was distributed within an office security update (KB4493206).
QUESTION
I have following json in my Cosmos DB:
...ANSWER
Answered 2021-May-28 at 21:12Here's the query:
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