Does a WordPress database error occur when installing WordPress?
enter image description here This is a problem has occurred when I installing WordPress
Is it safe to delete unneeded WP user metadata?
I'm having performance issues with my Wordpress site, due to the number of registered users, the wp_usermeta table has almost 70 million rows. Users do not have access to modify their profile so I have thought about deleting the unnecessary…
Why does Javascript-PostgreSQL query return undefined?
I'm trying to connect my postgreSQL database to a node.js application but it keeps returning undefined whenever I try to log some of the data to the console using "node file_name". I have a table called "users" and I want…
How to add Auto Increment Id in MySQL table based on sorted sequence of another column?
I have a table where I want to add auto Incrementing Id which isn't there. The rows aren't sorted. I want to add ID column based on the lexicographical order of another column, As shown below: CURRENT TABLE AFTER ADDING…
Split column values on each occurrence of a pattern and put it in multiple rows in MySQL
I have to split a column in MySQL table on each occurrence of a pattern say ":" and "," into multiple rows. Here is how the column data looks :- Column_1 page1:message1,page2:message2,page3:message3,page4:message4 I want to show data like this :-…
PERSIST vs PERSIST_ONLY (MySQL)
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…
Mysql – I have an error after using php artisan migrate
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 =…
select all sales from specific day ? mysql , convert datetime to date
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…
Mysql – Explain, how `(SELECT "a" FROM users LIIMIT 1)=a` may confirm, that theres a table, named "users"?
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…
Postgresql – create_graph Function does not works
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=#…