Different databases use different name quote

Source: Do different databases use different name quote?

The standard SQL language uses double-quotes for delimited identifiers:

SELECT * FROM "my table";

MySQL uses back-quotes by default. MySQL can use standard double-quotes:

SELECT * FROM `my table`;
SET SQL_MODE=ANSI_QUOTES;
SELECT * FROM "my table";

Microsoft SQL Server and Sybase uses brackets by default. They can both use standard double-quotes this way:

SELECT * FROM [my table];
SET QUOTED_IDENTIFIER ON;
SELECT * FROM "my table";

InterBase and Firebird need to set the SQL dialect to 3 to support delimited identifiers.

Most other brands of database use double-quotes correctly.

This use of quotes is called delimited identifiers. It’s an important part of SQL because otherwise you can’t use identifiers (e.g. table names and column names) that:

• Include whitespace: “my table”
• Include special characters and punctuation: “my-table”
• Include international characters: “私のテーブル”
• Are case-sensitive: “MyTable”
• Match SQL keywords: “table”