Re: Avoiding SQL injection in Dynamic Queries (in plpgsql)

2010/3/17 Allan Kamau :
> When writing dynamic commands (those having "EXECUTE 'some SQL
> query';), is there a way to prevent interpretation of input parameters
> as pieces of SQL commands? Does quote_literal() function implicitly
> protect against this unwanted behaviour.

quote_literal, quote_identif are enough, but USING clause is better
and faster. Sometimes you have to use a combination:

execute 'select foo from ' || tabname::regclass || ' WHERE a = $1' USING value;

Pavel



>
> Allan.
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