Mysql – SQL order by and then replace
How do you run an "order by" and then "replace" string, but keep the order? Context - I need the string "column_name" to be in the first line, hence using "zzz_column_name" to force it in the order by. And then…
Mysql – want to get each Groups latest row, group by multiple column
I need to get the latest row of each combinations of sender_id & receiver_id my messaging table: CREATE TABLE messaging ( msg_id SERIAL, sender_id BIGINT NOT NULL , receiver_id varchar(255) NOT NULL , msg text default NULL, media_link TEXT DEFAULT…
Mysql – MAX() slow query
I have this query to fetch most recent conversations grouped by phone number, however the query time is too slow. How can it be faster? SELECT * from messages WHERE id IN (SELECT max(id) from messages GROUP BY phone) AND…
How to delete duplicate rows in mysql with condition?
I have a table like this: Id email Active --------------------- 1 aaa 1 2 aaa 1 3 aaa 0 4 aaa 0 I want to delete duplicate row but if Active have 1/0 value keep 1 value and delete 0…
Mysql – Python, how do I retrieve the data in my list? this confuses me
crsr.execute("SELECT * FROM tblmob") res = crsr.fetchall() for i in res: nopol = i [2] print(nopol) and the ouput is row formating like this without the bullet B 9020 BCS B 9243 BQB B 9244 BQB B 9307 KXR B…
Mysql – MariaDB utf8mb4_0900_as_cs collation error
I'm trying to switch to MariaDB from mysql 8. I downloaded latest MariaDb 10.10.1 RC version, trying to import backup created from mysql using mysqldump and I get the following error Unknown collation 'utf8mb4_0900_as_cs' What is the equivalent collation in…
Mysql data extraction
I have a table called deals, it has records like this for example id deal_ref objectname status 1 1234 tom correct 2 1234 tom correct 3 1234 jerry wrong 4 1234 tom correct I need to identify all latest deals…
Mysql query by weekday
I want to query by weekday in a given table on a column storing dates. E.g. select * from MY_TABLE where date_column is 'Monday' I saw a DAYOFWEEK() function in mysql. But this only seems to manipulate the results of…
How to send a primary key as a foreign key to another table while submitting the form in Laravel vue?
I have these 2 tables: Table one(parties): public function up() { Schema::create('parties', function (Blueprint $table) { $table->id(); $table->string('full_name'); $table->string('ic_passport'); $table->string('nationality'); $table->string('income_tax_no'); $table->string('income_Tax_filing_branch'); $table->string('phone_no'); $table->string('email'); $table->timestamps(); }); } Table two(corraddresses): public function up() { Schema::create('corraddresses', function (Blueprint $table) { $table->id(); $table->unsignedBigInteger('party_id');…
Mysql – The Rows Holding the Group-wise Minimun of a Certain Column, but using an additional condition
From this dataset: mysql> SELECT * FROM document_signature; +----+-------------+-------------+---------+-------+-----------+ | id | document_id | employee_id | user_id | order | status | +----+-------------+-------------+---------+-------+-----------+ | 1 | 1 | 2 | NULL | 0 | SIGNED | | 2 | 1…