DbMigration.CreateTable creates shared sequence (generator) for any identity
column
-----------------------------------------------------------------------------------
Key: DNET-855
URL: http://tracker.firebirdsql.org/browse/DNET-855
Project: .NET Data provider
Issue Type: Bug
Components: ADO.NET Provider
Affects Versions: 6.3.0.0
Environment: .NET framework 4.6.1, VS 2017
Reporter: robsonwk
Assignee: Jiri Cincura
Using DbMigration, method CreateTable with column Identity set to true,
generates one, common sequence for any table, any column.
Result sql code is as following:
EXECUTE BLOCK
AS
BEGIN
if (not exists(select 1 from rdb$generators where
rdb$generator_name = 'GEN_IDENTITY')) then
begin
execute statement 'create sequence GEN_IDENTITY';
end
END;
and trigger
CREATE OR ALTER TRIGGER "ID_USERS_ID" ACTIVE BEFORE INSERT ON "USERS"
AS
BEGIN
if (new."ID" is null) then
begin
new."ID" = next value for GEN_IDENTITY;
end
END;
Proposal:
For table "Users", column "ID", migration sql could be:
EXECUTE BLOCK
AS
BEGIN
if (not exists(select 1 from rdb$generators where
rdb$generator_name = 'GEN_IDENTITY_USERS_ID')) then
begin
execute statement 'create sequence
GEN_IDENTITY_USERS_ID';
end
END;
and trigger
CREATE OR ALTER TRIGGER "ID_USERS_ID" ACTIVE BEFORE INSERT ON "USERS"
AS
BEGIN
if (new."ID" is null) then
begin
new."ID" = next value for GEN_IDENTITY_USERS_ID;
end
END;
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