Honestly, I’ve always thought NOT NULL should be the default. NULL is the odd special case, and you should make a case for it whenever you use it. Plus it’s much easier to change a column from NOT NULL to nullable than it is to go the other way.
I’m a fan of SQL DBDiff, which is an open source tool you can use to compare tables, views, functions, users, etc. of two instances of SQL Server databases and generate a change script between the source and destination databases.
In your case, you consider “” to be the same as undefined (i.e.: when the string is empty, it’s like there’s no string at all). It’s implementable in Zod this way: import { z } from “zod”; import { strict as assert } from “node:assert”; // `myString` is a string that can be either optional … Read more
I would recommend the Semantic Versioning standard, which the Maven versioning system also appears to follow. Please check out, http://semver.org/ In short it is <major>.<minor>.<patch><anything_else>, and you can add additional rules to the anything else part as seems fit to you. eg. -<qualifier>-<build_number>.
Have you tried rake db:schema:dump? Essentially, make sure that your database.yml file is referencing the database you wish to dump, and then run the command. It’ll take all of the tables and indexes in said database and then write it out to schema.rb. Note that you should rename schema.rb once it contains the dump; otherwise, … Read more
olayforyou.com defines these skin tones alt text http://www.freeimagehosting.net/uploads/151ab0ddd7.jpg very fair fair olive dark very dark Any person using cosmetics regularly would understand these terms. These rest of us are just guessing 🙂
Your first schema will work just fine. When you put an index on the FullPath column, use either the case-sensitive BETWEEN operator for queries, or use LIKE with either COLLATE NOCASE on the index or with PRAGMA case_sensitive_like. Please note that this schema also stores all parents, but the IDs (the names) are all concatenated … Read more
The header and schema are separate things. Header: If the csv file have a header (column names in the first row) then set header=true. This will use the first row in the csv file as the dataframe’s column names. Setting header=false (default option) will result in a dataframe with default column names: _c0, _c1, _c2, … Read more
If you don’t see this option directly you have to: Click File and New model On the new model window which has been opened, click Database and Compare schemas.
Applying normalization to your problem, the solution is as given. Run and see it on SQL Fiddle. CREATE TABLE products ( product_id int AUTO_INCREMENT PRIMARY KEY, name varchar(20), description varchar(30) ); INSERT INTO products (name, description) VALUES (‘Rug’, ‘A cool rug’ ), (‘Cup’, ‘A coffee cup’); — ======================================== CREATE TABLE variants ( variant_id int AUTO_INCREMENT … Read more