4,327 questions
2
votes
1
answer
47
views
Do explicit locks in postgresql CTEs lock every row even with a cursor?
Let's say I have a table
CREATE TABLE mytable (
user_id bigint,
someval text
)
In my application, I want to lock and fetch every row for some given user_id e.g. 123 to do some additional ...
- 119
3
votes
2
answers
78
views
Cumulative Stock Query without the participation of an Initial Stock Table
I'm designing a stock management program, here I have an Incoming Table like below:
id (integer)
date (date)
type (varchar)
warehouse_id (tinyint)
goods_id (integer)
quantity (decimal)
price (decimal)...
- 145
3
votes
1
answer
205
views
How to implement this SQL query with CTE in Exposed DSL?
I have a SQL query that uses a Common Table Expression (CTE) with window functions, and I need to implement it using Kotlin's Exposed DSL. Since Exposed doesn't have built-in CTE support, I'm looking ...
user31219547
2
votes
0
answers
41
views
Attempting to understand CTE behaviour in clickhouse with ReplacingMergeTrees and FINAL
We Have the following table in clickhouse:
CREATE TABLE db.user
(
`id` String,
`name` String,
`version` UInt64 DEFAULT 0,
)
ENGINE = ReplicatedReplacingMergeTree('/clickhouse/tables/{uuid}/{shard}',...
0
votes
1
answer
78
views
Why OPENQUERY fails with multiple CTEs with a where clause in some cases but not others
I have a query that contains two CTEs, one based on a linked Oracle server (from a SQL Server) that fails. I can fix it by doing any of the following: add a select limit (e.g. TOP 1000) to the SELECT ...
4
votes
5
answers
184
views
Query to find the product name which has a continuous increase in sales every year
Product table with columns - PRODUCT_ID PRODUCT_NAME
PRODUCT_ID
PRODUCT_NAME
100
NOKIA
200
IPHONE
300
SAMSUNG
400
OPPO
Sales table with columns - SALE_ID PRODUCT_ID YEAR QUANTITY Price
SALE_ID
...
2
votes
1
answer
75
views
Recursive SQL query to hierarchyId
I currently have the problem that I get performance problems when migrating a large amount of data, the more data is migrated. As I cannot query the assignments of children to the TeamIds directly via ...
- 67
0
votes
0
answers
185
views
How do I programmatically build a WITH 'ALIAS' AS (SELECT ...) CTE in sqlglot?
I'm trying to build a Common Table Expression (CTE) like this using the sqlglot Python library:
WITH A AS (
SELECT * FROM my_table
)
SELECT * FROM A
When I attempt to build this with the ...
0
votes
4
answers
132
views
Recursive CTE to insert an entry for every day
Consider the following:
IF OBJECT_ID('tempdb..#TetstData') IS NOT NULL
DROP TABLE #TetstData
CREATE TABLE #TetstData
(
Id INT NOT NULL,
PurchaseDate DATE NOT NULL,
DepreciationRate ...
- 7,873
1
vote
1
answer
118
views
How to use a recursive CTE in a JOIN statement
I'm working on converting an old database and queries to recursive CTEs. In the current code, I'm storing hierarchical data as a dash separated list of 0 padded strings. So as an example, I may have ...
- 3,220
4
votes
5
answers
132
views
Cannot update postgres table from cte, value goes missing
I have a Postgres Timescaledb table (mysolar) in which I collect energyvalues (time,energy) from my solarpanels. Sometimes, for whatever reason, I get a ‘zero-value’ reading. (see example table). I ...
- 61
0
votes
2
answers
138
views
SQL query returns `ERROR: syntax error at or near "union"`
I am a beginner in SQL. What is the syntax issue with the query shown here?
I just needed the random rows to be present n number of times.
with recursive cte1 as
(
select 1 as idx, company_id, ...
- 21
3
votes
2
answers
149
views
Recursive query for nomenclature like table with parent contains sum of all cost from children
I have a table like this:
COMPOSANT
COMPOSE
QTE
PA
COST
LEVEL
PARENT1
CHILD1
24
0
PARENT1
CHILD2
2
0
CHILD1
CHILD11
10
1
CHILD1
CHILD12
4
3
12
1
CHILD11
CHILD111
100
1
100
2
CHILD2
CHILD21
5
10
50
1
...
- 33
1
vote
3
answers
98
views
SQL query to aggregate and count non-null values across multiple columns
I have the following database schema. It looks at shoppers and how many orders they have made from three websites in a network.
ID
Name
Country
website1_Orders
website2_Orders
website3_Orders
123
...
- 11
1
vote
3
answers
122
views
Postgres CTE with insert and update of same row
I have a table with auto generated id like below :
CREATE TABLE wf_policy
(
id BIGSERIAL PRIMARY KEY,
name TEXT NOT NULL,
time BIGINT,
ver BIGINT ...
- 3,577