mysql alter table add unique constraint

mysql alter table add unique constraint

How to add mysql alter table add unique constraint in mysql table.

Thanks

View Answers

January 14, 2013 at 10:05 PM

Hi

Following query query can be used:

ALTER TABLE mytable
ADD CONSTRAINT uc_key1 UNIQUE (field1,field2);

Thanks









Related Tutorials/Questions & Answers:
mysql alter table add unique constraint
mysql alter table add unique constraint  How to add mysql alter table add unique constraint in mysql table. Thanks   Hi Following query query can be used: ALTER TABLE mytable ADD CONSTRAINT uc_key1 UNIQUE
mysql alter table add column
mysql alter table add column  Hi, What is the syntax of mysql alter table add column? Thanks   Hi, Here is mysql alter table add column example: ALTER TABLE employee ADD address VARCHAR(50); Read more at MySQL Add
Advertisements
Mysql Alter Unique Key
Mysql Alter Unique Key       Mysql Alter Unique is used to change the table structure and add... 'Employee'.  mysql> ALTER TABLE Employee ADD UNIQUE (ID
alter table add foreign key mysql
alter table add foreign key mysql  Hi, How to add foreign key in mysql using the query 'alter table add foreign key mysql' Thanks   Hi, We can use the following query: ALTER TABLE emp_address ADD FOREIGN KEY (emp_id
mysql alter table add multiple columns
mysql alter table add multiple columns  Hi, I have a table... for mysql alter table add multiple columns? Thanks   Hi, You can use following query: mysql> alter table employees -> add column city varchar(30
How alter table in MySQL?
How alter table in MySQL?  Hi, I have a table and I want to alter an int field into text field. How to alter the table in MySQL? Thanks   ... examples of alter table statements in MySQL. Thanks
Mysql Alter Constraint
'userform' and add ID as a Primary Key constraint. ALTER TABLE userform ADD ID... Mysql Alter Constraint     ... illustrate an example from 'Mysql Alter Constraint'. To understand the example
Mysql Alter Table
Mysql Alter Table       Mysql Alter Table is used to redefine the existing table. Understand with ExampleADS_TO_REPLACE_1 The Tutorial illustrate an example from 'Mysql Alter Table
Mysql Alter Table Syntax
Mysql Alter Table Syntax       Mysql Alter Table is used to redefine the existing table. ALTER TABLE tbl_name ADD [COLUMN] col_name column_definition
Mysql Alter Add Column
Mysql Alter Add Column       Mysql Alter Add Column is used to define the existing Table..._TO_REPLACE_1 The Tutorial demonstrate you 'Mysql Alter Add Column'. To understand
Mysql Alter Table Identity
Mysql Alter Table Identity       Mysql Alter Table Identity is used to change the existing structure... illustrate an example from 'Mysql Alter Table Identity'. To understand
alter table create index mysql
alter table create index mysql  Hi, What is the query for altering table and adding index on a table field? Thanks   Hi, Query is: ALTER TABLE account ADD INDEX (accounttype); Thanks
Mysql Alter Add Multiple Columns
Mysql Alter Add Multiple Columns       Mysql Alter Add Multiple Columns is used to modify... with ExampleADS_TO_REPLACE_1 The Tutorial illustrate an example from 'Mysql Alter Add
Mysql Alter Rename Table
Mysql Alter Rename Table       Mysql Alter Rename Table is used to redefine and rename the existing... from 'Mysql Alter Rename Table'. To understand this example we create a table
alter table create index mysql
alter table create index mysql  Hi, What is the query for altering table and adding index on a table field? Thanks
Mysql Alter Rename Table
Mysql Alter Rename Table       Mysql Alter Rename Table is used to modify and change the name... an example from 'Mysql Alter Rename Table'. To grasp this example , we create a table
Mysql Alter Table
Mysql Alter Table       Mysql Alter Table is used to redefine the existing table...: The Query Alter is used to modify the table 'employees' and add keywords is used
Mysql Alter Table Primary Key
Mysql Alter Table Primary Key       Mysql Alter Table Primary Key is used to remove... an example from 'Mysql Alter Table Primary Key'. To understand this example, we create
SQL UNIQUE Constraint
SQL UNIQUE Constraint       The UNIQUE constraint uniquely identifies each record in a database table... Table Stu_Class_10 create table Stu_Class_10( Stu_Id integer
SQL Alter Table Add Multiple Columns
SQL Alter Table Add Multiple Columns       Alter Table Add Multiple Columns in SQL... demonstrate Alter Table Add Multiple Columns. The SQL Query create a table 'Stu
Mysql Alter Command
below Query 'Alter Table' is used to modify the table  and add a unique column name. ALTER TABLE tablename add unique columnname... The Alter Table is used to modify table 'tablename' and add a primary key
Mysql Alter Autoincrement
Mysql Alter Autoincrement       Mysql Alter Autoincrement is used to modify the definition of  existing table and add autoincrement feature property to the primary key
SQL Alter Table Add Multiple Columns
SQL Alter Table Add Multiple Columns       Alter Table Add Multiple Columns in SQL... demonstrate Alter Table Add Multiple Columns. The SQL Query create a table 'Stu
how to count unique and duplicate values from one table in mysql?
how to count unique and duplicate values from one table in mysql?  I have use EMP table.I want to count unique and duplicate records from emp table and how to use in java program
Mysql Alter Column Default
Mysql Alter Column Default is used to modify the table... | +----+----------+---------+----------------------+-------+ Alter the table 'userform' and add column to set default: The Query Alter is used to modify table 'usertable' and add
SQL Alter Table Syntax
table structure and add constraint on Primary Key. Alter Table Name ... operations: Alter Table Name  ADD [COLUMN] col_name column_definition... using FIRST and AFTER modifiers. Alter Table Name  | ADD [COLUMN
MySQL Add Column
MySQL Add Column       MySQL Add Column tutorial explains you to add the column to the existing table. The table structure can be changed using 'Alter table' query. You can now
SQL Alter Table
TO vendors; - Add Column ALTER TABLE supplier ADD ( supplier_name varchar2(50...SQL Alter Table  What is alter table statement in sql? Can u please show me an example of SQL Alter Table?? Thanks!   ALTER TABLE
Mysql Alter Column Datatype
Mysql Alter Column Datatype       Mysql Alter Column Datatype is used to modify the table... The Tutorial illustrate an example from 'Mysql Alter Column  Datatype
Mysql Alter Column Size
Mysql Alter Column Size       Mysql Alter Column Size is used to change the data size... illustrate an example from 'Mysql Alter Column Size'. To understand example we create
Mysql Alter Rename Column
Mysql Alter Rename Column       Mysql Alter Rename Column is used to modify the table..._TO_REPLACE_1 The Tutorial illustrate an example from 'Mysql Alter Rename Column
Mysql Alter Remove Column
Mysql Alter Remove Column       Mysql Alter Remove Column is used to redefine the table... The Tutorial illustrate an example from 'Mysql Alter Remove Column
MySQL Add Column
MySQL Add Column       MySQL Add Column is used to add the column to the existing table. The Alter table... | +----+------------------------+----------------------+--------+ The Alter Table employee is used to modify the table 'employee' and add
MySQL Add Column
MySQL Add Column       MySQL Add Column is used to add the column to the existing table. The Alter table keyword is used to modify the table structure and add 
Mysql Alter Data Type
Mysql Alter Data Type     ... cover an example on 'Mysql Alter Date Type'.To understand this example we... Table "userform": The Query  Alter is used to modify the Table
Mysql Alter Not Null
Mysql Alter Not Null       Mysql Alter Not Null is used to perform when we want records... with ExampleADS_TO_REPLACE_1 The Tutorial illustrate an example from 'Mysql Alter Not Null
Mysql Alter Drop
Mysql Alter Drop       Mysql Alter Drop is used to modify the table definition and delete... illustrate an example from 'Mysql Alter Drop'. To understand this example, we
Mysql Alter Multiple Columns
Mysql Alter Multiple Columns       Mysql Alter Multiple Columns is used to modify the table..._TO_REPLACE_1 The Tutorial illustrate an example from 'Mysql Alter Multiple
SQL Alter Table Name
SQL Alter Table Name       SQL Alter Table Name is used to change or modify  name... into statement add records or rows to the table 'Stu_Table'. The inserted
Drop constraint of table in oracle without specifying constraint name
Drop constraint of table in oracle without specifying constraint name  I create my table in oracle with check constraint but I forgot constraint name.Now I want to drop constraint of my table without specifying constraint name
MySql Alter User
MySql Alter User This example illustrates how to alter user table. In this example we alter user table in which add a column by query "ALTER TABLE user ADD COLUMN userid INT". In the first table we can see there is only three
JDBC: Alter Table Example
You can add new field -  sql= " ALTER TABLE student ADD location...(); String sql = "ALTER TABLE student add location varchar(30...JDBC: Alter Table Example This tutorial describe how to alter existing table
MySQL Alter Tutorial, Database MySQL MySQL Crash Tutorial Tutorial
Key Mysql Alter Unique is used to change the table structure and add... into a table.    Mysql Alter View View...; Mysql alter add column Mysql Alter Add Column is used to define
Mysql Alter Column
; Mysql Alter Column is used to redefine the table and change... from 'Mysql Alter Column', we create a table 'employee1' with required fieldname... employee1: The Query Alter keyword in Mysql is used to redefine the table
SQL Alter Table
; Query Alter given below is used to modify the existing table 'Stu' and add id... Alter Table Stu add primary key (id) ; Describe Stu... SQL Alter Table      
Mysql Alter Allow Null
Mysql Alter Allow Null       Mysql Alter Allow Null is used to change the Null Type of a column..._TO_REPLACE_1 The section of Tutorial illustrate an example from 'Mysql Alter Allow Null
Mysql Alter Column
Mysql Alter Column       Mysql Alter Column is used to modify table and  change... The Tutorial illustrate an example from 'Mysql Alter Column'. To understand example ,we
Mysql Alter Column Primary Key
Mysql Alter Column Primary Key       Mysql Alter Column Primary Key is used to modify table..._TO_REPLACE_1 The Tutorial illustrate an example from 'Mysql Alter Column Primary
SQL Alter Table Primary Key
is created.ADS_TO_REPLACE_4 ALTER TABLE table_name ADD... SQL Alter Table Primary Key       Alter a Table Primary Key in SQL modifies the existing table
SQL Alter Table Name
SQL Alter Table Name       SQL Alter Table Name is used to change or modify  name... into statement add records or rows to the table 'Stu_Table'. The inserted

Ads