Update column.md

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filimonov 2021-03-24 00:04:54 +01:00 committed by GitHub
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@ -144,7 +144,7 @@ This query changes the `name` column properties:
- TTL - TTL
For examples of columns TTL modifying, see [Column TTL](../../engines/table_engines/mergetree_family/mergetree.md#mergetree-column-ttl). For examples of columns TTL modifying, see [Column TTL](../../engines/table_engines/mergetree_family/mergetree.md#mergetree-column-ttl).
If the `IF EXISTS` clause is specified, the query wont return an error if the column doesnt exist. If the `IF EXISTS` clause is specified, the query wont return an error if the column doesnt exist.