What is the difference between double quotes and single quotes in Oracle

Double quotes and single quotes are used to surround string values ​​in Oracle. The main differences are: Purpose: Single quotes are used for string literals, double quotes are used for database object names, text containing single quotes, and are case-sensitive identifier. Identifier naming: case-insensitive within single quotes, case-sensitive within double quotes. Escape characters: The escape characters must be escaped with backslashes within single quotes, but they do not need to be escaped within double quotes.

The difference between double quotes and single quotes in Oracle

Double quotes and single quotes are used to surround characters in Oracle string value. The main difference between them is:

Usage:

• Single quote ('): is mainly used to specify string literals .

• Double quotation marks ("): Mainly used for the following purposes:

  • Specify the name of a database object (such as a table, column, constraint).
  • Contain text within single quotes (avoid escaping characters)
  • Case-sensitive identifiers

#Identifier naming:

Strings within single quotes are treated as string literals, and are not case sensitive.
• Strings within double quotes identify database objects. Case-sensitive

Escape characters:

In text within single quotes, escape characters (such as \n) must be used. Backslash() is used for escaping.
• In text within double quotes, backslashes are not required for escaping characters.

##Example:

Single quotes: SELECT * FROM 'EMPLOYEES';

• Double quotes: SELECT * FROM "Employees";
• ##Notes:

In Oracle SQL queries, single quotes are typically used to surround string literals

Double quotes are used only in specific situations, such as case-sensitive identifiers. characters or text within single quotes
• .

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