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CREATE TABLE IF NOT EXISTS `new_record` ( `id` int(11) NOT NULL AUTO_INCREMENT, `trn_date` datetime NOT NULL, `name` varchar(50) NOT NULL, `age`int(11) NOT NULL, `submittedby` varchar(50) NOT NULL, PRIMARY KEY (`id`) );

Question

CREATE TABLE IF NOT EXISTS new_record ( id int(11) NOT NULL AUTO_INCREMENT, trn_date datetime NOT NULL, name varchar(50) NOT NULL, ageint(11) NOT NULL, submittedby varchar(50) NOT NULL, PRIMARY KEY (id) );

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Solution

This is a SQL command to create a new table in a database. The table is named new_record and it has five columns: id, trn_date, name, age, and submittedby.

Here's a step-by-step explanation:

  1. CREATE TABLE IF NOT EXISTS 'new_record': This command creates a new table named new_record if it doesn't already exist in the database.

  2. ( 'id' int(11) NOT NULL AUTO_INCREMENT: This creates a column named id that stores integers up to 11 digits. NOT NULL means this column can't be left empty, and AUTO_INCREMENT means the value in this column will automatically increase by 1 for each new record.

  3. 'trn_date' datetime NOT NULL: This creates a column named trn_date that stores date and time. NOT NULL means this column can't be left empty.

  4. 'name' varchar(50) NOT NULL: This creates a column named name that stores strings of characters, with a maximum length of 50. NOT NULL means this column can't be left empty.

  5. 'age' int(11) NOT NULL: This creates a column named age that stores integers up to 11 digits. NOT NULL means this column can't be left empty.

  6. 'submittedby' varchar(50) NOT NULL: This creates a column named submittedby that stores strings of characters, with a maximum length of 50. NOT NULL means this column can't be left empty.

  7. PRIMARY KEY ('id'): This sets the id column as the primary key of the table. A primary key is a unique identifier for each record in the table.

  8. );: This marks the end of the command.

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