[英]Redshift won't change column type
I'm trying to change a column in Redshift from varchar to integer. I've already checked and the strings are all numbers so it should force fine.我正在尝试将 Redshift 中的一列从 varchar 更改为 integer。我已经检查过,字符串都是数字,所以它应该强制执行。
When I run:当我跑步时:
alter table schema.table_name alter column "id" type int;
I get the following error:我收到以下错误:
ERROR: target data type "int8" is not supported [SQL State=0A000]错误:不支持目标数据类型“int8”[SQL State=0A000]
I've checked the Redshift documentation and just to rule out a few potentials:我检查了Redshift 文档,只是为了排除一些可能性:
Any pointers would be amazing, thank you!任何指针都会很棒,谢谢!
Alter column type is for varchar types - "ALTER COLUMN column_name TYPE new_data_type -- A clause that changes the size of a column defined as a VARCHAR data type."更改列类型适用于 varchar 类型 - “ALTER COLUMN column_name TYPE new_data_type -- 更改定义为 VARCHAR 数据类型的列的大小的子句。” See: https://docs.aws.amazon.com/redshift/latest/dg/r_ALTER_TABLE.html请参阅: https://docs.aws.amazon.com/redshift/latest/dg/r_ALTER_TABLE.html
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