I read Syntax for Persisting System Variables in MySQL documentation about PERSIST and PERSIST_ONLY as shown below: To persist a global system variable to the mysqld-auto.cnf option file in the data directory, precede the variable name by the PERSIST keyword…
Here is the message I got after the migration. IlluminateDatabaseQueryException SQLSTATE[HY000] [2002] No connection could be made because the target machine actively refused it. (SQL: select * from information_schema.tables where table_schema = econnect and table_name = migrations and table_type =…
how to convert the DateTime column to date? I need something like the select * from sales where date = = "2022-09-18"; I need to get all sales from a specific day I tried this How can I convert datetime…
I'm learning blind SQLi from website "portswigger" and play labs there.Unfortunately, i don't understand, how SELECT "a" FROM users LIMIT 1 can return column "a", if there isn't any column, named "a"(may be i don understand something). And why is…
I have done: test=# SET search_path = ag_catalog, "$user", public; But still I can not use create_graph function directly. test=# create_graph('university'); ERROR: syntax error at or near "create_graph" LINE 1: create_graph('university'); Why I need to do this using ag_catalog: test=#…
I have a question about this error that I have in my code. So, the app should show a list of products read from firebase. This is the code placed in the screen where I want to show Products: import…
I have a MYSQL InnoDB table table with the following columns (table and column names changed): date (PK, DATE) var_a (PK, FK, INT) var_b (PK, FK, INT) rel_ab (DECIMAL) where rel_ab is a column that describes a relationship between 2…
I'm using a Livewire component, why is it still showing "cannot be null" even though all fields in the form have been filled out? I want the data that I fill in the form to be inserted into the database.…
I'm practicing with queries optimization. In particular, tuning work_mem parameter. There's the DB diagram: https://postgrespro.com/docs/postgrespro/12/apks02. I have a sql function get_passengers_and_flights: CREATE FUNCTION get_passengers_and_flights(d timestamptz) RETURNS TABLE(passenger_name text, flight_no text) AS $$ SELECT t.passenger_name, f.flight_no FROM tickets t JOIN ticket_flights…
Members, Hope you and yours are keeping safe and well. Am an end user not a coder as in we use software written on Postgres and just hoping for some information comment about a issue we have. We have a…