How Can I Remove Conditional Execution Tokens from MySQL Dumps While Preserving Genuine Comments?

Stripping Conditional Tokens from MySQL Dumps

In an attempt to generate a simple structure-only dump of a database, the use of mysqldump often returns unexpected results, including conditional-execution tokens that act as comments. These tokens can appear as:

/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;

While resembling comments, these tokens control execution based on the MySQL version. If the version is higher than or equal to the specified number, the server executes the statement.

To remove conditional-execution tokens, it's advisable to preserve genuine comments. This can be challenging because they share similar syntax. However, it's important to retain crucial information like:

-- MySQL dump 10.13  Distrib 5.1.41, for Win32 (ia32)

Instead of attempting to remove all comments, consider the following:

• These conditional tokens are essential and should not be removed.
• Genuine comments can be differentiated based on their start characters. For instance, "/*" indicates a block comment and "//" marks a single-line comment.

Utilizing these principles, you can safeguard valuable comments while streamlining the dumping process.

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