Windows DatabaseebooksStatistical Information

LLE10221 : Howto use variables in the tables with pl/pgsql and postgres

Symptom:

You want to create variable table or function names in postgresql

Cause:

none

Solution:

In the case of executing dynamic sql commands, you can use the execute command in pl/pgsql.

e.g.

CREATE  FUNCTION somefunction(name varchar, language varchar)
  RETURNS void AS
$BODY$
DECLARE
    table_cmd;     --the command that we build to execute
    tablename    text;
BEGIN

    tablename := $1 || 'suffix'; --naming convention
    
    table_cmd :=     'create table ' ||  tablename
            || ' ( ' || primkey || ' serial unique,'
            || 'Title        varchar(255) not null,'
            || 'Symptom        varchar(1500) not null,'
            || 'Cause        varchar(1500) default ''the'');'

    raise notice 'table_cmd is %', table_cmd; --show some information when run
    --EXECUTE table_cmd; --comment this out to create the table

END;
$BODY$
  LANGUAGE 'plpgsql' VOLATILE;

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