# Which Problems Are Solved
Systems running with PostgreSQL before Zitadel v2.39 are likely to have
a wrong type for the `in_tx_order` column in the `eventstore.event2`
table. The migration at the time used the `event_sequence` as default
value without typecast, which results in a `bigint` type for that
column. However, when creating the table from scratch, we explicitly
specify the type to be `integer`.
Starting from Zitadel v2.67 we use a Pl/PgSQL function to push events.
The function requires the types from `eventstore.events2` to the same as
the `select` destinations used in the function. In the function
`in_tx_order` is also expected to by of `integer` type.
CochroachDB systems are not affected because `bigint` is an alias to the
`int` type. In other words, CockroachDB uses `int8` when specifying type
`int`. Therefore the types already match.
# How the Problems Are Solved
Retrieve the actual column type currently in use. A template is used to
assign the type to the `ordinality` column returned as `in_tx_order`.
# Additional Changes
- Detailed logging on migration failure
# Additional Context
- Closes#9180
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Co-authored-by: Silvan <27845747+adlerhurst@users.noreply.github.com>
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