How to create a table with two unique columns
How to create a table with two unique columns. I use the following syntax below and I get the error message such unique or primary key already exists.create the table COPQ_WORKCELL_GOAL
(
Type_id varchar2 (4) NOT NULL UNIQUE,
Tyle_Location varchar2 (30) NOT NULL UNIQUE,
Type_Description varchar2 (20).
KEY elementary SCHOOL (Type_id)
);
Use 1 or the other column type_id;
create table COPQ_WORKCELL_GOAL
(
Type_id varchar2(4),
Tyle_Location varchar2(30) NOT NULL UNIQUE,
Type_Description varchar2(20),
PRIMARY KEY (Type_id)
);
Table created
drop table COPQ_WORKCELL_GOAL;
Table dropped
create table COPQ_WORKCELL_GOAL
(
Type_id varchar2(4) primary key,
Tyle_Location varchar2(30) NOT NULL UNIQUE,
Type_Description varchar2(20)
);
Table created
Tags: Database
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