Creating a Auto Generation ID with Prefix in MySQL Without Using Trigger
Creating a Auto Generation ID with Prefix in MySQL Without Using Trigger I need Creating a Employee Id with Prefix and Without Using Trigger in MySQL.
Postgresql – Is there a way to update 2 values each time calculating data on each row?
I have the following table: CREATE TABLE IF NOT EXISTS import.dre ( idmov integer, companynumber integer, idproduct integer, dtdate date, nrtank integer, dailybalance numeric, startbalance numeric, endbalance numeric ) Populated with the following query (10 first lines only): INSERT INTO…
Postgresql – Select only one row for a user when there are multiple rows for that user based on a condition
I have a multi column table that I have derived by joining other tables UserId. Attempts. quizno First 1 assd. First 2 ffjfjf. Second 1 cbcbc. Second 2 tititi. Second 3 cncncn. I want a table that returns the row…
Reactjs – i'm trying to sanitize but it doesn't work
i'm trying to sanitize html string before sending it into database, i'm using sanitize-html npm package but it doesn't work if (noteContent) { const resultContent = sanitize(noteContent); console.log(resultContent); } else { setErrorMessages((prevState) => ["note content cannot be empty"]); } here…
PostgreSQL query slow when where clause is not on an ID
I'm using a postgresql (15.5) database with the following logic: We have "meters" who measure electrical consumption. We have "computer meters" who are calculation of the measurements of different meters. For exemple "computedMeterA" = "meterA" + "meterB" I have classical…
Mysql – How can I optimize this simple join query? It takes a long time
I am not sure on how to begin optimizing this High Latency SQL query that my platform runs. Other than reducing the datasets, what are some things that I can do? SELECT ctm.* FROM compound_transaction_map ctm JOIN bustransaction_map btm ON…
How to optimize MySQL query for matching multiple comma-separated values in a single column?
I am working with a MySQL database and I have a column (let's call it status_column) which contains comma-separated values. The possible values in this column are 'NA', 'NON_NA', 'PSG_REQUIRED', or any combination of these, such as 'NA,PSG_REQUIRED' or 'PSG_REQUIRED,NON_NA',…
MongoDB use $geonear to compare points (vehicle trajectory) with other points (trajectories)
I am trying to benchmark MongoDB using berlinMOD data and queries. To represent a single vehicle's trip (trajectory), I'm using multiple documents (point based representation). a Sample: [{ "_id": 3, "tripid": 11, "geom_lnglat": { "type": "Point", "coordinates": [ 4.306468999999999, 50.873466799999974…
Im goining to connect Mysql using Spring boot Java. but i gave errors. im new for this
Caused by: org.hibernate.exception.GenericJDBCException: Unable to open JDBC Connection for DDL execution [Access denied for user 'root'@'localhost' (using password: YES)] [n/a] Caused by: org.hibernate.exception.GenericJDBCException: Unable to open JDBC Connection for DDL execution [Access denied for user 'root'@'localhost'@'localhost' (using password: YES)] [n/a]…
Redis – How to keep membership in sync in a multi tenant architecture with per tenant database?
I'm working on a project where we aim to have a separate database for each tenant. In our setup, there is a central database (and API) containing a "users" table that stores usernames and passwords for all users. Additionally, this…