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Asked: 2026-06-02T03:39:06+00:00

First of all, yes I’ve read documentation for DO statement :) http://www.postgresql.org/docs/9.1/static/sql-do.html So my

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First of all, yes I’ve read documentation for DO statement 🙂
http://www.postgresql.org/docs/9.1/static/sql-do.html

So my question:

I need to execute some dynamic block of code that contains UPDATE statements and calculate the number of all affected rows. I’m using Ado.Net provider.

In Oracle the solution would have 4 steps:

  1. add InputOutput parameter “N” to command
  2. add BEGIN … END; to command
  3. add :N := :N + sql%rowcount after each statement.
  4. It’s done! We can read N parameter from command, after execute it.

How can I do it with PostgreSQL? I’m using npgsql provider but can migrate to devard if it helps.

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1 Answer

  1. Editorial Team

    My solution is quite simple. In Oracle I need to use variables to calculate the sum of updated rows because command.ExecuteNonQuery() returns only the count of rows affected by the last UPDATE in the batch.

    However, npgsql returns the sum of all rows updated by all UPDATE queries. So I only need to call command.ExecuteNonQuery() and get the result without any variables. Much easier than with Oracle.

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