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plurals

PO
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Id
20808056
data
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0
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1
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CreationDate
2013-12-27T21:27:28.620
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2017-02-04T18:23:15.597
LastEditDate
2017-05-23T12:24:23.243
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-1
OwnerUserId
939860
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20798800
PostTypeId
2
Score
1
ViewCount
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LastEditorDisplayName
text
Body
Actually, you cannot use <code>FOUND</code> with <code>EXECUTE</code>. <a href="http://www.postgresql.org/docs/current/interactive/plpgsql-statements.html#PLPGSQL-STATEMENTS-DIAGNOSTICS" rel="nofollow noreferrer">The manual</a>: <blockquote> Note in particular that <code>EXECUTE</code> changes the output of <code>GET DIAGNOSTICS</code>, but does not change <code>FOUND</code>. </blockquote> There are a couple of other things that might be improved. First of all, your original is open to SQL injection. I suggest: <pre><code>CREATE OR REPLACE FUNCTION my_schema.sp_delete_row_table(table_name regclass , id_column text , id_value int , OUT del_ct int) AS $func$ BEGIN EXECUTE format ('DELETE FROM %s WHERE %I = $1', table_name, id_column); USING id_value; -- assuming integer columns GET DIAGNOSTICS del_ct = ROW_COUNT; -- directly assign OUT parameter EXCEPTION WHEN OTHERS THEN del_ct := 0; END $func$ LANGUAGE plpgsql; </code></pre> <a href="http://www.postgresql.org/docs/current/interactive/functions-string.html#FUNCTIONS-STRING-OTHER" rel="nofollow noreferrer"><code>format()</code></a> requires Postgres 9.1 or later. You can replace it with string concatenation, but be sure to use escape the column name properly with <a href="https://stackoverflow.com/questions/10705616/table-name-as-a-postgresql-function-parameter/10711349#10711349"><code>quote_ident()</code></a>! The rest works for 8.4 as well. Closely related answers: <ul> <li><a href="https://stackoverflow.com/questions/8449011/dynamic-sql-execute-as-condition-for-if-statement/8449341#8449341">Dynamic SQL (EXECUTE) as condition for IF statement</a> </li> <li><a href="https://stackoverflow.com/questions/10705616/table-name-as-a-postgresql-function-parameter/10711349#10711349">Table name as a PostgreSQL function parameter</a></li> </ul>
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1. POCount rows affected by DELETE
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1. USErwin Brandstetter
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1. COYes Erwin Brandstetter, I use EXECUTE and after GET DIAGNOSTICS. I use only FOUN for INSERT, UPDATE, DELETE sentences.
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 USAron Elias Herrera Ponte

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