I connected RStudio to Amazon Athena, and the database connection was successful. con <- dbConnect(noctua::athena(), aws_access_key_id = "***", ...
Tag: sql
SQL Server: select records, not linked to another table
I have a table: and a linked table: Relationship between these 2 tables: I want to select all records from CollectionSiteAddress, which are not linked to CollectionSite (neither AddressId nor RemittanceId). Which request should I use? I tried: but it selects all records from CollectionSiteAddress Answer You are missing this WHERE clause: because you want all the unmatched rows of
SQL query to fetch data based on column value
Is it possible to get entire data in one attempt for this scenario? I have this query where I need retrieve product name from another table. SELECT T1.CASE_ID, T2.PRODUCT_ID, T2….
SQLAlchemy: Filter the Objects From Relationship When Accessed
Query Statement: Get Children that have their Names start with ‘A’. Link Them With their Parents. Schema: I Have a One-to-Many Relationship. Parent(id, Name, children(rel->child)) -> Child(id, …
Naming a default constraint
I’m trying to create a default constraint here, but the system is generating a weird name for it. If I want to name it df_MY_TABLE_GUID or something, how could I specify that name be used? Answer Just specify the constraint name with the full syntax, like the UNIQUE in your example: As a matter of routine, I always prefer and
Summarize aggregations into friendly text
This is my table in SQL Server : and I want this output in SQL Server (return this Text with Query not function): Does anyone know how I can do this? Answer Modern Versions If on SQL Server 2017 or better, you can also do it this way (and this prevents you from having to know in advance and hard-code
How to query and obtain a result set containing at minimum the SET of values submitted
WITH fData AS ( SELECT 1001 AS lookupID, ‘A’ AS LookUpValue UNION ALL SELECT 1001 AS lookupID, ‘B’ AS LookUpValue UNION ALL SELECT 1001 AS lookupID, ‘C’ AS LookUpValue UNION ALL SELECT …
group by along with totals in the same query
I have the below query select role, count(*) as cases from ( select CASE WHEN r.id = 30 THEN r.name ELSE r.name || ‘ ‘ || u.member_id END AS role from case_inventory ci, users u, roles r …
Is it possible to get this PostgreSQL query down from 50ms to the order of a few ms?
I have a query that I want to make as fast as possible. It’s this: I get the following plan: Which is not terrible, I guess. But the actual query is more involved + I’ll be running this query in parallel on different shards. So I’m really focussed on getting this lightning quick. Is there anything I’m missing, or is
Can someone suggest a way to do this query using Doctrine (QueryBuilder) with multiple “where” clause?
I’m new to the QueryBuilder and I’m trying to do a POST request (with a JSON) to retrieve some informations in my database. I’m using array because each property can have several values. Here’s the JSON I’m currently sending : Here’s my database : The request I would like to have : And what I have currently done in Symfony,