What are the Rules for Creating Valid Table Names in SQLite?

Valid table name in SQLite database

When creating table names in a SQLite database, specific naming rules need to be followed. Unlike some other database systems, SQLite table names must meet the following conditions:

Character combination:

• Table names must consist of alphanumeric characters (A-Z, a-z, and 0-9).
• The first character cannot be a number.

Reserved words and symbols:

• Certain reserved words and symbols cannot be used as table names, such as "AUTOINCREMENT", "PRIMARY KEY", or symbols such as ".." or "*".

Case sensitivity:

• Table names are not case-sensitive, meaning "example_table" and "EXAMPLE_TABLE" are considered the same table.

Valid example:

• CREATE TABLE my_table (...)

Invalid example:

• CREATE TABLE 123table (...) (starts with a number)

Allowed delimiters:

While alphanumeric characters form the basis of valid table names, SQLite allows certain delimiters in quoted names. These delimiters include:

• Hyphen "-" (e.g., CREATE TABLE "123abc-ABC.txt" (...))
• The period "." (for example, CREATE TABLE "123abc.txt" (...))

Quote:

SQLite supports various citation styles to accommodate table names that may violate naming rules. These styles include:

• Double quotes: "this_is_a_valid_name"
• Single quote: 'this_is_also_a_valid_name'
• Square brackets: [this_is_another_valid_name]
• Backticks: this_is_yet_another_valid_name

These quoting mechanisms allow developers to create table names that would otherwise be invalid due to reserved words, symbols, or character combinations.

By adhering to these guidelines, developers can ensure that table names in their SQLite database are both valid and easily identifiable.

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