liu ming created TRAFODION-1901:
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Summary: allow more flexible column-definition in create table ddl
Key: TRAFODION-1901
URL: https://issues.apache.org/jira/browse/TRAFODION-1901
Project: Apache Trafodion
Issue Type: Improvement
Reporter: liu ming
Current Trafodion DDL syntax for CREATE TABLE is very strict to ANSI standard
about column-definition.
column-definition is:
column data-type
[DEFAULT default | NO DEFAULT]
[[CONSTRAINT constraint-name] column-constraint]
So constraint like 'NOT NULL' must follow the DEFAULT descriptor. In many other
databases, this is allowed. So if Trafodion make this more flexible, it will
help database migration.
Here is a test case:
CREATE TABLE TABLETEST1
(MARK_ID SMALLINT NOT NULL,
BEGIN_TIME DATE NOT NULL DEFAULT date'2008-01-01',
END_TIME DATE NOT NULL DEFAULT date'2018-01-01',
ACTIVE_FLAG SMALLINT,
MARK_NAME VARCHAR(20),
DESC_TXT VARCHAR(80),
primary key(MARK_ID, BEGIN_TIME, END_TIME)
);
*** ERROR[15001] A syntax error occurred at or before:
CREATE TABLE TABLETEST (MARK_ID SMALLINT NO
T NULL, BEGIN_TIME DATE NOT NULL DEFAULT date'2008-01-01', END
^ (134 characters from
start of SQL statement)
*** ERROR[8822] The statement was not prepared.
Trafodion support of above DDL will greatly simplify the database migration
from other databases into Trafodion.
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