"SELECT * FROM tblTest"
"SELECT SupplierID, CompanyName FROM dbo.Suppliers;"
"SELECT AuthorID, LastName, FirstName FROM Authors"
"SELECT * FROM tblUsers WHERE UserId=" + Convert::ToString(UserId)
WHERE

Multiple SELECT’s

"SELECT SomeColumnName, SomeOtherColumnName FROM SomeTableName WHERE ...

SELECT AS

"SELECT SomeColumnName AS 'The Name I Want To Use' FROM SomeTableName WHERE ...

Multiple WHERE’s

"SELECT * FROM SomeTableName WHERE SomeColumnName=24 AND SomeColumnName=15"

NULL Records

"SELECT * FROM tblUsers WHERE DeletedDateTime IS NULL ORDER BY UserName ASC";
"SELECT * FROM tblUsers WHERE DeletedDateTime IS NOT NULL ORDER BY UserName ASC";

DateDiff

SqlCommand1->CommandText = "SELECT * FROM tblRecordings WHERE DATEDIFF(second, EndDateTime, '" + StartDateTime->ToString() + "') = 0"; //Datediff seems to work for days etc, but this example just doesn't work for some reason

Matches A Value In A List Of Values

"WHERE MyColumnName IN (1,3,6,8)"
"WHERE MyColumnName IN ('Monday','Wednesday','Saturday')"
"WHERE MyColumnName NOT IN ('Monday','Wednesday','Saturday')"