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GowthamRaj K
2021-07-29 08:16:47 +05:30
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@@ -653,4 +653,11 @@ There are different types of joins available in SQL −
- A field with a NULL value is a field with no value. - A field with a NULL value is a field with no value.
- It is very important to understand that a NULL value is different than a zero value or a field that contains spaces. - It is very important to understand that a NULL value is different than a zero value or a field that contains spaces.
CREATE TABLE CUSTOMERS(
ID INT NOT NULL,
NAME VARCHAR (20) NOT NULL,
AGE INT NOT NULL,
ADDRESS CHAR (25) ,
SALARY DECIMAL (18, 2),
PRIMARY KEY (ID)
);