T-SQL UPPER(): Change an all lowercase string to uppercase

The T-SQL UPPER() command allows you to change a lowercase string to an uppercase string.

For example, it will allow you to change the word hello to HELLO.

Example 1:

Declare @MyVar varchar(50);
Set @Myvar=’hello’;
Select UPPER(@MyVar)   => Output will be HELLO in uppercase.

You can use the T-SQL UPPER() command with other commands to Capitalize only the first letter of a word.

For example, change florida to Florida.

Example2:

DECLARE @MyVar varchar(50);
SET @Myvar=’florida’;
SELECT UPPER(LEFT(@MyVar,1)) +SUBSTRING(@MyVar,2,49)

Since my string is of length 50, notice that I am selecting the first letter and converting it to upper case and concatenating with the rest 49 letters that are already in lowercase starting with the second position in the string.

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