Why Does Parameterizing Table Names Fail in Prepared Statements?

Resolving Parameter Errors in Prepared Statements: The Case of Table Names

Database queries using prepared statements require careful parameter handling. A common error occurs when trying to use a parameter to specify the table name itself.

The error message, "Microsoft Parameter 'Pa_RaM000' specified where a table name is required," highlights this limitation. Prepared statements excel at parameterizing data values (numbers, strings, etc.), but they cannot handle parameterized table names.

The solution is straightforward: embed the table name directly into the SQL query. Avoid using a parameter placeholder for the table name. Instead, concatenate the table name into the query string.

Here's the corrected code:

<code class="language-sql">private String query1 = "SELECT plantID, edrman, plant, vaxnode FROM [" + reportDate + "]";</code>

This revised approach directly incorporates reportDate into the FROM clause, eliminating the parameter substitution error and allowing the prepared statement to execute correctly.

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