Unique Index¶
Unique Index¶
Netezza Syntax | Syntax After Migration |
|---|---|
CREATE TABLE prod
(
prod_no number(6) not null unique,
prod_name national character varying(32) not null,
prod_desc clob
)
DISTRIBUTE ON (prod_no)
ORGANIZE ON (prod_no, prod_name)
;
----------
CREATE TABLE prod
(
prod_no number(6) not null
CONSTRAINT UQ_prod unique,
prod_name national character varying(32) not null,
prod_desc clob
)
DISTRIBUTE ON (prod_no)
ORGANIZE ON (prod_no, prod_name)
;
----------
CREATE TABLE prod
(
prod_no number(6) not null PRIMARY KEY,
prod_name national character varying(32) not null,
prod_desc clob
)
DISTRIBUTE ON (prod_no)
ORGANIZE ON (prod_no, prod_name)
;
----------
CREATE TABLE prod
(
prod_no number(6) not null,
prod_name national character varying(32) not null,
prod_desc clob,
constraint uq_prod UNIQUE (prod_no)
)
DISTRIBUTE ON (prod_no)
ORGANIZE ON (prod_no, prod_name)
;
----------
CREATE TABLE prod
(
prod_no number(6) not null,
prod_name national character varying(32) not null,
prod_desc clob
)
DISTRIBUTE ON (prod_no)
ORGANIZE ON (prod_no, prod_name)
;
ALTER TABLE prod
ADD constraint uq_prod UNIQUE (prod_no);
| CREATE TABLE prod
(
prod_no number(6) not null /* unique */,
prod_name national character varying(32) not null,
prod_desc clob
) WITH(ORIENTATION=COLUMN)
DISTRIBUTE BY HASH (prod_no)
/* ORGANIZE ON (prod_no, prod_name) */
;
----------
CREATE TABLE prod
(
prod_no number(6) not null
/* CONSTRAINT UQ_prod unique */,
prod_name national character varying(32) not null,
prod_desc clob
) WITH(ORIENTATION=COLUMN)
DISTRIBUTE BY HASH (prod_no)
/* ORGANIZE ON (prod_no, prod_name) */
;
----------
CREATE TABLE prod
(
prod_no number(6) not null /* PRIMARY KEY */,
prod_name national character varying(32) not null,
prod_desc clob
) WITH(ORIENTATION=COLUMN)
DISTRIBUTE BY HASH (prod_no)
/* ORGANIZE ON (prod_no, prod_name) */
;
----------
CREATE TABLE prod
(
prod_no number(6) not null,
prod_name national character varying(32) not null,
prod_desc clob /*,
constraint uq_prod UNIQUE (prod_no) */
) WITH(ORIENTATION=COLUMN)
DISTRIBUTE BY HASH (prod_no)
/* ORGANIZE ON (prod_no, prod_name)*/
;
----------
CREATE TABLE prod
(
prod_no number(6) not null,
prod_name national character varying(32) not null,
prod_desc clob
)
DISTRIBUTE BY HASH (prod_no)
/*ORGANIZE ON (prod_no, prod_name)*/
;
/*
ALTER TABLE prod
ADD constraint uq_prod UNIQUE (prod_no);
*/
|
Note
This feature is applicable only for COLUMN store. For ROW store, Unique Index should not be commented.