How Should I Escape Apostrophes in MySQL Queries?

Escaping Apostrophes in MySQL: A Dilemma Resolved

The MySQL documentation suggests using backslash () to escape apostrophes (single quotes), while in practice, double apostrophes ('') seem to work equally well. This discrepancy has raised questions about the recommended approach.

Closer examination of the documentation reveals that double apostrophes are indeed an acceptable alternative to backslash escaping. The documentation states that "A ‘'’ inside a string quoted with ‘'’ may be written as ‘''’."

Furthermore, the PostgreSQL documentation recommends against using backslash escaping for security reasons, as it can create vulnerabilities. The preferred method is to double the single-quote character ('').

However, the optimal approach may vary depending on the specific context, including the programming language, SQL database version, and query framework being used. If no specific constraints are known, it is advisable to use double apostrophes for better compatibility and security.

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