A default value is entered if the column has a DEFAULT constraint, if a default is bound to the column, or if a default is bound to the underlying user-defined data type.When you specify values for only some of the columns in the column_list, one of three things can happen to the columns that have no values: If an INSERT statement violates a constraint, default or rule, or if it is the wrong data type, the statement fails and SQL Server displays an error message.These strings are truncated to a single space. All trailing spaces are removed from data inserted into varchar columns, except in strings that contain only spaces.All char columns are right-padded to the defined length. ![]() ![]() Inserting an empty string (‘ ‘) into a varchar or text column inserts a single space.When inserting rows with the INSERT statement, these rules apply: INSERT Table_name | view name ĭEFAULT VALUES | values_list | select statement We can use the SELECT statement to generate an employee phone list from the Employees table as follows: It is processed according to the following sequence: The SELECT statement, or command, allows the user to extract data from tables, based on specific criteria. Lower case letters are used to represent user-defined words.Upper case letters are used to represent reserved words. ![]()
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