String Functions

String Functions

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+/*
+
+Today's Topic: String Functions - TRIM, LTRIM, RTRIM, Replace, Substring, Upper, Lower
+
+*/
+
+--Drop Table EmployeeErrors;
+
+
+CREATE TABLE EmployeeErrors (
+EmployeeID varchar(50)
+,FirstName varchar(50)
+,LastName varchar(50)
+)
+
+Insert into EmployeeErrors Values 
+('1001  ', 'Jimbo', 'Halbert')
+,('  1002', 'Pamela', 'Beasely')
+,('1005', 'TOby', 'Flenderson - Fired')
+
+Select *
+From EmployeeErrors
+
+-- Using Trim, LTRIM, RTRIM
+
+Select EmployeeID, TRIM(employeeID) AS IDTRIM
+FROM EmployeeErrors 
+
+Select EmployeeID, RTRIM(employeeID) as IDRTRIM
+FROM EmployeeErrors 
+
+Select EmployeeID, LTRIM(employeeID) as IDLTRIM
+FROM EmployeeErrors 
+
+
+
+
+
+-- Using Replace
+
+Select LastName, REPLACE(LastName, '- Fired', '') as LastNameFixed
+FROM EmployeeErrors
+
+
+-- Using Substring
+
+Select Substring(err.FirstName,1,3), Substring(dem.FirstName,1,3), Substring(err.LastName,1,3), Substring(dem.LastName,1,3)
+FROM EmployeeErrors err
+JOIN EmployeeDemographics dem
+	on Substring(err.FirstName,1,3) = Substring(dem.FirstName,1,3)
+	and Substring(err.LastName,1,3) = Substring(dem.LastName,1,3)
+
+
+
+-- Using UPPER and lower
+
+Select firstname, LOWER(firstname)
+from EmployeeErrors
+
+Select Firstname, UPPER(FirstName)
+from EmployeeErrors