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How to get ERD diagram for an existing database?
...ings (also called referential integrity constraints) in a graph style. The table nodes and relations are layed out automatically, with a number of layout modes available. The resulting graph is unique as it displays all information in an optimal and readable layout.
from its site
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SQL Server insert if not exists best practice
I have a Competitions results table which holds team member's names and their ranking on one hand.
8 Answers
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Flask-SQLAlchemy import/context issue
... id = db.Column(db.Integer, primary_key=True)
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# Create the database tables.
db.create_all()
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# start the flask loop
app.run()
I just splitted one app.py to app.py and model.py without using Blueprint. In that case, the above answer dosen't work. A line code is needed to work.
before:
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Copy/duplicate database without using mysqldump
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You can duplicate a table without data by running:
CREATE TABLE x LIKE y;
(See the MySQL CREATE TABLE Docs)
You could write a script that takes the output from SHOW TABLES from one database and copies the schema to another. You should be abl...
How to set a default entity property value with Hibernate
...ld not recommend using columnDefinition for this situation, this is not portable from a database to another, and you need to know the specific SQL language of your server.
– pdem
Sep 20 '16 at 7:30
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Apply style to only first level of td tags
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This style:
table tr td { border: 1px solid red; }
td table tr td { border: none; }
gives me:
this http://img12.imageshack.us/img12/4477/borders.png
However, using a class is probably the right approach here.
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How to Get True Size of MySQL Database?
...SQL database use, in order to select a web host.
I found the command SHOW TABLE STATUS LIKE 'table_name' so when I do the query, I get something like this:
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resizes wrong; appears to have unremovable `min-width: min-content`
...nge the display property of the fieldset to one of the following values:
table-cell (recommended)
table-column
table-column-group
table-footer-group
table-header-group
table-row
table-row-group
Of these, I recommend table-cell. Both table-row and table-row-group prevent you from changing width, ...
Select datatype of the field in postgres
How do I get datatype of specific field from table in postgres ?
For example
I have the following table,
student_details (
stu_id integer,
stu_name varchar(30 ),
joined_date timestamp
);
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How to take backup of a single table in a MySQL database?
...sqldump takes the backup of an entire database. I need to backup a single table in MySQL. Is it possible? How do I restore it?
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