[ https://issues.apache.org/jira/browse/IMPALA-7832?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Fredy Wijaya resolved IMPALA-7832. ---------------------------------- Resolution: Fixed Fix Version/s: Impala 3.2.0 > Support IF NOT EXISTS in alter table add columns > ------------------------------------------------ > > Key: IMPALA-7832 > URL: https://issues.apache.org/jira/browse/IMPALA-7832 > Project: IMPALA > Issue Type: New Feature > Components: Frontend > Affects Versions: Impala 3.1.0 > Reporter: Thomas Tauber-Marshall > Assignee: Fredy Wijaya > Priority: Minor > Labels: ramp-up > Fix For: Impala 3.2.0 > > > alter table <table_name> add [if not exists] columns (<name> <type> [, <name> > <type>...]) > would add the column only if a column of the same name does not already exist > Probably worth checking out what other databases do in different situations, > eg. if the column already exists but with a different type, if "replace" is > used instead of "add", etc. -- This message was sent by Atlassian JIRA (v7.6.3#76005)