CREATE UNIQUE INDEX <someuniquename> on H1 (...the unique columns...).
Primary key is (except for the INTEGER PRIMARY KEY in a rowid table) and in WITHOUT ROWID tables where it is the key of the b-tree, just semantic sugar for a UNIQUE index ... --- The fact that there's a Highway to Hell but only a Stairway to Heaven says a lot about anticipated traffic volume. >-----Original Message----- >From: sqlite-users [mailto:sqlite-users- >boun...@mailinglists.sqlite.org] On Behalf Of Peng Yu >Sent: Wednesday, 10 April, 2019 06:11 >To: SQLite mailing list >Subject: [sqlite] Does sqlite3 support alter table add primary key? > >Hi, > >I got the following error. Does sqlite3 support alter table add >primary key? > >sqlite> alter table mytab add primary key (h1); >Error: near "primary": syntax error > >https://www.tutorialspoint.com/sqlite/sqlite_primary_key.htm > >-- >Regards, >Peng >_______________________________________________ >sqlite-users mailing list >sqlite-users@mailinglists.sqlite.org >http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users _______________________________________________ sqlite-users mailing list sqlite-users@mailinglists.sqlite.org http://mailinglists.sqlite.org/cgi-bin/mailman/listinfo/sqlite-users
