Mark,
Thursday, September 19, 2002, 12:24:45 PM, you wrote:
MC> Can I change the data type of a column in a table from varchar(10) to
MC> smallint(5) unsigned zerofill. The column that is set to varchar(10) is
MC> populated with values from a primary key column in another table that has a
MC> datatype smallint(5) unsigned zerofill and I need to make them both the
MC> same. I administer my MySQL database from the command line and just need to
MC> know
MC> the syntax for changing data types. Also, can I do this without affecting
MC> the data that is currently in the varchar(10) column (this data has came
MC> from a column of the data type that I wish to change to)?
Yes, you can do it with ALTER TABLE .. MODIFY .. . If varchar(10) column
contains allowable values for SMALLINT(5) UNSIGNED ZEROFILL, there
shoudn't be a problem:
http://www.mysql.com/doc/en/ALTER_TABLE.html
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