2023-03-27 02:49:26
If you have 2 tables in mysql. One table for group and another table for contacts. The 2 tables have many relationships. What is the | vay to link the two table then storing data?
CREATE TABLE group_contacts (
group_id INT NOT NULL,
contact_id INT NOT NULL,
PRIMARY KEY (group_id, contact_id),
FOREIGN KEY (group_id) REFERENCES groups (id),
FOREIGN KEY (contact_id) REFERENCES groups (id),
);
When you got this error, this is generally dut to you referred the data source itself in a formula. Preview.Error: The current preview value is too complex to display. Details: Expression.Error:
Below shows a code sample that aligns a button center. <div class="d-flex justify-content-center"> <button type="submit" class="btn btn-default btn-block my-3" style="backg
There are plenty of technologies to collect, process and analyze data, such as Excel,Power BI, Access, Python, MySQL, etc. But how to choose the right technology beween above mentioned technologies is
I was bitten by mosquitoes last night, and I didn't sleep all night. In the morning, I thought I would work, but Xampp had a problem. Phenomenon MySQL stops automatically after a few seconds of star
Windows PC environment Win10 256 GB SSD Install macOS 10.13 High Sierra Speed after installation: very smooth Problems: (1)font is blur: although it's still acceptable, but the font is a l