Обсуждение: Procedure for adding a column
I need to add a column to a table. This table holds several thousand records, has several indexes, and serves as the parent table to a few child tables. When I've done this in the past, it has taken quite a long time for the ALTER TABLE command to complete. So, what is the correct procedure for adding a column? Drop the indexes, add the column, and recreate the indexes? Thanks. -David
On Thu, 2003-10-09 at 11:05, David Shadovitz wrote: > I need to add a column to a table. This table holds several thousand > records, has several indexes, and serves as the parent table to a few > child tables. > > When I've done this in the past, it has taken quite a long time for > the ALTER TABLE command to complete. > > So, what is the correct procedure for adding a column? Drop the > indexes, add the column, and recreate the indexes? Can you be more explicit about "quite a long time". -- ----------------------------------------------------------------- Ron Johnson, Jr. ron.l.johnson@cox.net Jefferson, LA USA "Whatever may be the moral ambiguities of the so-called demoratic nations and however serious may be their failure to conform perfectly to their democratic ideals, it is sheer moral perversity to equate the inconsistencies of a democratic civilization with the brutalities which modern tyrannical states practice." Reinhold Nieburhr, ca. 1940
By "quite a long time" I meant at least a few hours. -David ron.l.johnson@cox.net (Ron Johnson) wrote in message news:<1065896503.24193.53.camel@haggis>... > On Thu, 2003-10-09 at 11:05, David Shadovitz wrote: > > I need to add a column to a table. This table holds several thousand > > records, has several indexes, and serves as the parent table to a few > > child tables. > > > > When I've done this in the past, it has taken quite a long time for > > the ALTER TABLE command to complete. > > > > So, what is the correct procedure for adding a column? Drop the > > indexes, add the column, and recreate the indexes? > > Can you be more explicit about "quite a long time". > > ----------------------------------------------------------------- > Ron Johnson, Jr. ron.l.johnson@cox.net > Jefferson, LA USA