How Can I Prevent SQL*Plus from Prompting for Ampersand Substitutions?

Disable ampersand substitution prompt in SQL Plus scripts

When executing a SQL script in SQL Plus, you may encounter a prompt asking you to enter a replacement value for a string containing the ampersand. This can cause problems, especially if the & symbol is part of a comment and is not intended to trigger a replacement.

In order to disable this feature and allow SQL Plus to ignore the ampersand, consider the following:

1. Use the "SET DEFINE OFF" command:

You can instruct SQL Plus to suppress substitution prompts for bind variables by executing SET DEFINE OFF. This will prevent any string prefixed with & from being interpreted as a replacement argument.

<code class="language-sql">SET DEFINE OFF</code>

2. Make sure the ampersand is at the end of the string:

If SET DEFINE OFF is not possible, you can make sure the ampersand is at the end of the string. This will prevent SQL Plus from treating it as a bind variable prefix.

<code class="language-sql">'StackOverflow &' || ' you'</code>

By implementing one of these solutions, you can run SQL scripts from SQL Plus without encountering replacement prompts for ampersands in comments.

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