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https://issues.apache.org/jira/browse/CASSANDRA-14706?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benjamin Lerer updated CASSANDRA-14706:
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Resolution: Duplicate
Status: Resolved (was: Open)
> 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
> Components: CQL/Interpreter, CQL/Syntax, Legacy/CQL
> Reporter: Dmitry Lazurkin
> Priority: Low
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> 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/RENAME better than
> clause for each column.
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