sql tag

625 questions

1 answers
103 views
0

I am inquiring about mysql join. I want to make sure that it doesn't print as many numbers as it does.

I'm a beginner, so I don't know the exact keyword of the question.table_studenttable_student_infoselect t1.student_id, t1.student_name, t2.email from student as t1 join student_info as t2 on t1.studen...

mysql join

2 years ago

1 answers
79 views
0

It is a problem to create a window program by linking with mysql using Anaconda's spider. It works normally in mysql, but if you run it in the spider, you will get a grammar error. (Long sentence caution)

import sysimport pymysqlfrom PyQt5.QtWidgets import *def connectDB(): host = localhost user = root pw = **** db = world conn = pymysql.connect( host= host, user = user, password = pw, db = db) return(...

python anaconda mysql

2 years ago

2 answers
41 views
0

Count by date and time

There is a document that shows the time by date.I want to convert it to hourly data by date!Help me.I want to write an if sentence, but I have no idea.

python mysql

2 years ago

1 answers
123 views
0

I have a question regarding the JSP mapper condition.

I'm developing a shopping mall web. I'd like to add a page-nation function to the page that displays the latest products.Then condition in the mapper is I think we need to add 2 more. <select id=na...

sql mybatis jsp java

2 years ago

1 answers
40 views
0

mysql overall ranking.

CREATE TABLE `user_data` ( `u_id` int NOT NULL, `nick_name` varchar(255) NOT NULL, `kor` int NOT NULL, `eng` int NOT NULL, `math` int NOT NULL, `date` date NOT NULL)SELECT * FROM (SELECT u_id, nick_na...

mysql

2 years ago

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