[SQL] pgsql-sql@postgresql.org
I've a stored procedure I'd like to migrate from MS SqlServer
to Postgresql 7.2.1. How can I do ?
here is the stored procedure
CREATE PROCEDURE ws_doc_tree_new
@parent_node_id int,
@label varchar(50),
@publication varchar(32)
AS
DECLARE
@doc_exists int,
@new_node_id int,
@parent_doc_id int,
@parent_node_path varchar(250),
@parent_tree_level int
/* check if label does not already exists */
SELECT
@doc_exists = count(*)
FROM
ws_doc_tree
WHERE
ws_doc_tree.parent_node_id = @parent_node_id
AND ws_doc_tree.label = @label
IF (@doc_exists > 0)
BEGIN
RAISERROR ('Could not create child node, a folder with the same name
already exists',16,1)
RETURN 0
END
SELECT
@parent_node_path = ws_doc_tree.node_path + ws_doc_tree.label + '/',
@parent_tree_level = ws_doc_tree.tree_level
FROM
ws_doc_tree
WHERE
ws_doc_tree.node_id = @parent_node_id
BEGIN TRANSACTION
SELECT @new_node_id = max(ws_doc_tree.node_id) + 1 FROM ws_doc_tree
INSERT INTO ws_doc_tree
(node_id,
label,
node_path,
parent_node_id,
tree_level,
publication,
creation_dt)
VALUES
(@new_node_id,
@label,
@parent_node_path,
@parent_node_id,
@parent_tree_level +1,
@publication,
current_timestamp) COMMIT TRANSACTION
RETURN @new_node_id
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Re: [SQL] pgsql-sql@postgresql.org
because I'm a new to stored procedure
I gave only one store procedure, and I've 10 more to convert
an example would help me
-Message d'origine-
De : [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]De la part de Christopher
Kings-Lynne
Envoyé : mercredi 14 août 2002 10:43
À : philip johnson; [EMAIL PROTECTED]
Objet : Re: [SQL] [EMAIL PROTECTED]
Why not spend 5 minutes reading the documentation and trying to do it
yourself before asking us to do your job for you?
http://www.us.postgresql.org/users-lounge/docs/7.2/postgres/plpgsql.html
Chris
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED]]On Behalf Of philip johnson
> Sent: Wednesday, 14 August 2002 3:29 PM
> To: [EMAIL PROTECTED]
> Subject: [SQL] [EMAIL PROTECTED]
> Importance: High
>
>
> I've a stored procedure I'd like to migrate from MS SqlServer
> to Postgresql 7.2.1. How can I do ?
> here is the stored procedure
> CREATE PROCEDURE ws_doc_tree_new
> @parent_node_id int,
> @label varchar(50),
> @publication varchar(32)
> AS
>
> DECLARE
> @doc_exists int,
> @new_node_id int,
> @parent_doc_id int,
> @parent_node_path varchar(250),
> @parent_tree_level int
>
> /* check if label does not already exists */
> SELECT
>@doc_exists = count(*)
> FROM
>ws_doc_tree
> WHERE
>ws_doc_tree.parent_node_id = @parent_node_id
>AND ws_doc_tree.label = @label
>
> IF (@doc_exists > 0)
> BEGIN
> RAISERROR ('Could not create child node, a folder with the same name
> already exists',16,1)
> RETURN 0
> END
>
> SELECT
> @parent_node_path = ws_doc_tree.node_path +
> ws_doc_tree.label + '/',
> @parent_tree_level = ws_doc_tree.tree_level
> FROM
> ws_doc_tree
> WHERE
> ws_doc_tree.node_id = @parent_node_id
>
> BEGIN TRANSACTION
> SELECT @new_node_id = max(ws_doc_tree.node_id) + 1 FROM ws_doc_tree
>
> INSERT INTO ws_doc_tree
> (node_id,
>label,
>node_path,
>parent_node_id,
>tree_level,
>publication,
>creation_dt)
> VALUES
> (@new_node_id,
>@label,
>@parent_node_path,
>@parent_node_id,
>@parent_tree_level +1,
>@publication,
>current_timestamp) COMMIT TRANSACTION
>
> RETURN @new_node_id
>
>
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Re: [SQL] pgsql-sql@postgresql.org
thanks very much
-Message d'origine-
De : Stephan Szabo [mailto:[EMAIL PROTECTED]]
Envoye : mercredi 14 aout 2002 16:36
A : philip johnson
Cc : [EMAIL PROTECTED]
Objet : Re: [SQL] [EMAIL PROTECTED]
On Wed, 14 Aug 2002, philip johnson wrote:
> I've a stored procedure I'd like to migrate from MS SqlServer
> to Postgresql 7.2.1. How can I do ?
> here is the stored procedure
> CREATE PROCEDURE ws_doc_tree_new
> @parent_node_id int,
> @label varchar(50),
> @publication varchar(32)
Here, you'll need to do something like
create function ws_doc_tree_new(int, varchar(50), varchar(32))
returns int as '
To make the labels you'll need to declare aliases in the
declare section.
> DECLARE
> @doc_exists int,
> @new_node_id int,
> @parent_doc_id int,
> @parent_node_path varchar(250),
> @parent_tree_level int
It's probably best to remove the @'s on all the
variables. Also, I think you'll need to use
a record type for the select that gets parent_node_path
and parent_tree_level since I'm not sure that you can otherwise
select into multiple values.
I'm not sure if any of your variable names end up being
duplicates of columns you use without the tablename anywhere,
if so it'll give an error and you'll need to rename them.
And you'll need semicolons for each of those lines (rather
than commas or nothing). And a BEGIN.
> /* check if label does not already exists */
> SELECT
>@doc_exists = count(*)
> FROM
>ws_doc_tree
> WHERE
>ws_doc_tree.parent_node_id = @parent_node_id
>AND ws_doc_tree.label = @label
to do the assignment,
SELECT INTO doc_exists count(*) ...
Again you'll need a semicolon I believe as well.
> IF (@doc_exists > 0)
IF ... THEN
> RAISERROR ('Could not create child node, a folder with the same name
> already exists',16,1)
RAISE EXCEPTION ''...'';
> RETURN 0
> END
END IF;
>
> SELECT
> @parent_node_path = ws_doc_tree.node_path + ws_doc_tree.label +
'/',
> @parent_tree_level = ws_doc_tree.tree_level
> FROM
> ws_doc_tree
> WHERE
> ws_doc_tree.node_id = @parent_node_id
>
> BEGIN TRANSACTION
Can't start new transactions in here currently, just remove this and the
commit.
> SELECT @new_node_id = max(ws_doc_tree.node_id) + 1 FROM ws_doc_tree
>
> INSERT INTO ws_doc_tree
> (node_id,
>label,
>node_path,
>parent_node_id,
>tree_level,
>publication,
>creation_dt)
> VALUES
> (@new_node_id,
>@label,
>@parent_node_path,
>@parent_node_id,
>@parent_tree_level +1,
>@publication,
>current_timestamp) COMMIT TRANSACTION
>
> RETURN @new_node_id
END;' language 'plpgsql';
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