[jira] [Updated] (CASSANDRA-14706) Support "IF EXISTS/IF NOT EXISTS" for all clauses of "ALTER TABLE"

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-14706?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

ASF GitHub Bot updated CASSANDRA-14706:
---------------------------------------
    Labels: pull-request-available  (was: )

> Support "IF EXISTS/IF NOT EXISTS" for all clauses of "ALTER TABLE"
> ------------------------------------------------------------------
>
>                 Key: CASSANDRA-14706
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14706
>             Project: Cassandra
>          Issue Type: New Feature
>            Reporter: Dmitry Lazurkin
>            Priority: Minor
>              Labels: pull-request-available
>
> Like so:
> {noformat}
> ALTER TABLE <table> ALTER <column> TYPE <newtype>;
> ALTER TABLE [ IF EXISTS ] <table> ADD [ IF NOT EXISTS ] <coumn> <newtype>;
> ALTER TABLE [ IF EXISTS ] <table> ADD [ IF NOT EXISTS ] (<column> <newtype>,<column1> <newtype1>..... <column n> <newtype n>);
> ALTER TABLE [ IF EXISTS ] <table> DROP [ IF EXISTS ] <column>;
> ALTER TABLE [ IF EXISTS ] <table> DROP [ IF EXISTS ] ( <column>,<column1>.....<column n>);
> ALTER TABLE [ IF EXISTS ] <table> RENAME [ IF EXISTS ] <column> TO <column>;
> ALTER TABLE [ IF EXISTS ] <table> WITH <property> = <value>;
> {noformat}
> I think common IF EXISTS/IF NOT EXISTS clause for ADD/DROP better than clause for each column.



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