Hello,
You can not currently change the data type with alter table.
J
Ying Lu wrote:
Hi,
I have a question about alter a column's type in a postgreSQL table.
For example, I have 10, 000 records in a table name "test", I'd like to change column "machineID" type from integer to varchar. I am looking for something like:
alter table test alter column machineID ... ... varchar
Thanks in advance,
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TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match
