how can I create second table in mysql? 1050 error - mysql

Question

i'm creating second table in HEIDI SQL, but it doesn't work.
it shows 1050 error: user1 aleady exists.
I aleady created user1 table and I try to create user2 table. However it doesn't
#2. TABLE
CREATE TABLE user1(
user_id INT,
name VARCHAR(20),
email VARCHAR(30),
age INT(3),
rdata DATE
);
# TABLE 2
CREATE TABLE user2(
user_id INT PRIMARY KEY AUTO_INCREMENT,
name VARCHAR(20) NOT NULL,
email VARCHAR(30) UNIQUE NOT NULL,
age INT(3) DEFAULT 30,
rdate TIMESTAMP
);

Answer 1

You can run this script, which will avoid this error "1050 error: user1 aleady exists.":
CREATE TABLE IF NOT EXISTS `user1 ` (
user_id INT,
name VARCHAR(20),
email VARCHAR(30),
age INT(3),
rdata DATE
);
NB: your user1 table doesn't have a primary key and for the age column, it's advisable to store the date of birth because the age can be calculated.

Answer 2

I would advise you to write the script using drop table if exists:
DROP TABLE IF EXISTS user1;
CREATE TABLE user1 (
user_id INT,
name VARCHAR(20),
email VARCHAR(30),
age INT(3),
rdata DATE
);
# TABLE 2
DROP TABLE IF EXISTS;
CREATE TABLE user2(
user_id INT PRIMARY KEY AUTO_INCREMENT,
name VARCHAR(20) NOT NULL,
email VARCHAR(30) UNIQUE NOT NULL,
age INT(3) DEFAULT 30,
rdate TIMESTAMP
);
CREATE TABLE IF NOT EXISTS will leave the previous version of the table -- which is troublesome if you make changes to the definitions. Using such constructs, I have spent a fair amount of time debugging code when the structure of a table didn't change.