Re: Automating PostgreSql table partition using triggers

when creating dynamic query try to store it completey as string because you will not be able to change tableName (i
haventbeen doing that for a long time , so possibly i can be wrong).<br />to "exec" or "execute" command you have to
passthe query as parameter.<br /> it would look like this<br /><br />declare sql as varchar;<br />Field2=new.
testing_name;<br/>Field1=new.testing_id;<br />sql:='insert into tableName'||id||' (testing_id,testing_name) values
('||Field1||','||quote_literal(Field2)||')';<br/> exec(sql);<br /><br /><div class="gmail_quote">On Thu, Jan 27, 2011
at6:50 PM, Amitabh Kant <span dir="ltr"><<a href="mailto:amitabhkant@gmail.com">amitabhkant@gmail.com</a>></span>
wrote:<br/><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204);
padding-left:1ex;"> Hi<br /><br />I am trying to write a function which is being called from a trigger used for
partitioninga large table. The partitioning is to happen based on an integer field (testing_id). A simplified structure
ofwhat I am trying to do is written below.<br /><br />Create Table tbltesting(<br /> testing_id int not null,<br
/> testing_namecharacter varying(255));<br /><br />Create table tbltesting1(check(testing_id = 1))
inherits(tbltesting);<br/>Create table tbltesting2(check(testing_id = 2)) inherits(tbltesting);<br /><br />CREATE OR
REPLACEFUNCTION partition_insert_trigger()<br />RETURNS TRIGGER AS $$<br />DECLARE id integer ;<br />BEGIN<br />    id
:=NEW.testing_id; <br />    <br />    INSERT INTO tbltesting'||id||' VALUES (NEW.*);   //Problem line, not sure what
syntaxto use here<br /><br />    RETURN NULL;<br />END;<br />$$<br />LANGUAGE plpgsql;<br /><br /><br />CREATE TRIGGER
partition_trigger<br/>    BEFORE INSERT ON tbltesting<br />    FOR EACH ROW EXECUTE PROCEDURE
partition_insert_trigger();<br/><br />Creating tables or child tables is not a problem and the trigger works fine if
thefunction has static definitions. What I am trying to achieve is use the new testing_id to create a table name for
usein the insert statement. If I am able to use the variable in the table name, I would not have to re-declare the
functioneach time with modified conditions for each separate testing_id.<br /><br /><br />With regards<br /><font
color="#888888"><br/>Amitabh<br /><br /></font></blockquote></div><br /><br clear="all" /><br />-- <br
/>---------------------------------------<br/>Viktor Bojović<br />---------------------------------------<br />Wherever
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