Sql Query Assignment

Some examples of Column Names are First Name and Last Name.

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For example, we could use the Team’s names as a unique ID and begin joining to other Tables specific to that team.

In this way, we can create powerful relational databases.

SQL was initially developed by IBM in the early 1970s (Date 1986).

The initial version, called (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM’s quasi-relational database management system, System R.

Many of the data types have a size such as CHAR(35) or Numeric(8,2).

Bit –Integer data with either a 1 or 0 value Int –Integer (whole number) data from -2^31 (-2,147,483,648) through 2^31 – 1 (2,147,483,647) Smallint –Integer data from 2^15 (-32,768) through 2^15 – 1 (32,767) Tinyint –Integer data from 0 through 255 Decimal –Fixed precision and scale numeric data from -10^38 -1 through 10^38 Numeric –A synonym for decimal Timestamp –A database-wide unique number Uniqueidentifier –A globally unique identifier (GUID) Money – Monetary data values from -2^63 (-922,337,203,685,477.5808) through 2^63 – 1 ( 922,337,203,685,477.5807), with accuracy to one-ten-thousandth of a monetary unit Smallmoney –Monetary data values from -214,748.3648 through 214,748.3647, with accuracy to one-ten-thousandth of a monetary unit Float –Floating precision number data from -1.79E 308 through 1.79E 308 Real –Floating precision number data from -3.40E 38 through 3.40E 38 Datetime –Date and time data from January 1, 1753, to December 31, 9999, with an accuracy of one-three-hundredths of a second, or 3.33 milliseconds Smalldatetime –Date and time data from January 1, 1900, through June 6, 2079, with an accuracy of one minute Char –Fixed-length non-Unicode character data with a maximum length of 8,000 characters Varchar –Variable-length non-Unicode data with a maximum of 8,000 characters Text –Variable-length non-Unicode data with a maximum length of 2^31 – 1 (2,147,483,647) characters Binary –Fixed-length binary data with a maximum length of 8,000 bytes Varbinary –Variable-length binary data with a maximum length of 8,000 bytes Image – Variable-length binary data with a maximum length of 2^31 – 1 (2,147,483,647) bytes The Optional Column Constraints are NULL, NOT NULL, UNIQUE, PRIMARY KEY and DEFAULT, used to initialize a value for a new record.If SQL Server SELECT contains multiple assignments, SQLWays converts them to multiple assignment operators in Oracle.(SQL) is a database language designed for managing data held in a relational database management system.To illustrate, we will use the SQL statement CREATE TABLE EMPLOYEES to create the employees table with 16 attributes or fields.USE SW CREATE TABLE EMPLOYEES ( Employee No CHAR(10) NOT NULL UNIQUE, Department Name CHAR(30) NOT NULL DEFAULT “Human Resources”, First Name CHAR(25) NOT NULL, Last Name CHAR(25) NOT NULL, Category CHAR(20) NOT NULL, Hourly Rate CURRENCY NOT NULL, Time Card LOGICAL NOT NULL, Hourly Salaried CHAR(1) NOT NULL, Emp Type CHAR(1) NOT NULL, Terminated LOGICAL NOT NULL, Exempt Code CHAR(2) NOT NULL, Supervisor LOGICAL NOT NULL, Supervisor Name CHAR(50) NOT NULL, Birth Date DATE NOT NULL, College Degree CHAR(5) NOT NULL, CONSTRAINT Employee_PK PRIMARY KEY(Employee No ); The first field is Employee No with a field type of CHAR.Learn how to use SQL to store, query, and manipulate data.SQL is a special-purpose programming language designed for managing data in a relational database, and is used by a huge number of apps and organizations.The SQL statement CREATE is used to create the database and table structures.Example: CREATE DATABASE SW A new database named SW is created by the SQL statement CREATE DATABASE SW.I first download the Premier League Table and populate it into an Excel file as shown below. I then create an empty list, and split this string at every new line character.I then split the line further at each specified comma in the string, and append to my f List. Here I can see I have a nested list, with the first element of f List representing the columns, the second element representing the team occupying first place and so forth. Firstly, by starting with an Excel file, we can transform this into a Database table amenable to querying in a database management system.

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