Constraint sql

create table etc(
  numeric (4) anything constraint Gives_name_to_a_restriction primary key);

Sql constarint

It creates a new constraint on an existing table, which is used to specify
rules for any data in the table.
Example: Adds a new PRIMARY KEY constraint named ‘user’ on columns
ID and SURNAME.
ALTER TABLE users
ADD CONSTRAINT user PRIMARY KEY (ID, SURNAME);

Constraint

print("hello world");
alert(print);

-1

Similar codes

0 vote315 views1 answer
Print sum of values sql
SQL
8 votes341 views1 answer
Oracle add month
SQL
0 vote343 views1 answer
Sql server count all tables rows
SQL
0 vote317 views1 answer
Connection error in mysql workbench
SQL
2 votes374 views2 answers
Mysql count rows returned
SQL
0 vote409 views1 answer
How to find date from date table in sql
SQL
5 votes370 views1 answer
AND OR NOT operators sql
SQL
0 vote404 views3 answers
Characters found after end of sql statement
SQL
0 vote335 views2 answers
Android sqlite tutorial for beginners
SQL
0 vote338 views1 answer
Não é possível executar uma operação DML dentro de uma consulta
SQL