Re: Using Insert - Default in a condition expression ??

>> >
>> > I'm trying to write an INSERT INTO statement that will use a DEFAULT
>> > value when an input parameter is null.
>> >
>> Neither of my 2 methods are pretty.
>> 1) Use a trigger.
>> 2) Grab and cast the default value from the information_schema.columns
>> view and plug it in.
>>
>> Another option is to build your insert sql as a string and then execute it.
>
> Another option:
>
> rewrite your function:
>
> CREATE OR REPLACE FUNCTION "name_add" (p_name varchar, p_created_date
> date) RETURNS integer AS $$ BEGIN case when $2 is null then INSERT INTO
> names(name, created_date) values (p_name,  default); else insert into
> names values ($1, $2); end case; return 1; end; $$ language plpgsql;
>
> Andreas Kretschmer

Again, this approach works for a simple example.  But for a larger
function with any number of input params and multiple columns with
default values, it's not practical for an ORM code generator.