Snowflake alter column data type

Change column type snowflake

alter table TABLE_NAME add column TEMP_COLUMN TIMESTAMP_LTZ(9);

update TABLE_NAME t1
  set t1.TEMP_COLUMN = TO_TIMESTAMP_LTZ(t2.TIMESTAMP_NTZ_COLUMN_NAME)
  from TABLE_NAME t2
  where t1.TEMP_COLUMN = t2.TIMESTAMP_NTZ_COLUMN_NAME

// if you don't want troubles create a new copy of table and use SWAP WITH instead
alter table aws_config rename column TIMESTAMP_NTZ_COLUMN_NAME to TIMESTAMP_NTZ_COLUMN_NAME_OLD;
alter table aws_config rename column TEMP_COLUMN to TIMESTAMP_NTZ_COLUMN_NAME;

alter table aws_config drop column TIMESTAMP_NTZ_COLUMN_NAME_OLD

Snowflake alter column data type

alter table t1 alter c4 set data type varchar(50)

Source: docs.snowflake.com

Similar codes

1 vote194 views1 answer
Key validation sql
SQL
1 vote188 views2 answers
Oracle leftmost characters
SQL
0 vote191 views1 answer
Check constraint is violated
SQL
3 votes167 views1 answer
Only join in sql
SQL
7 votes164 views4 answers
What is my mysql version
SQL
1 vote193 views1 answer
Mysql view current queries
SQL
0 vote187 views1 answer
Python connect to mysql in settings.py
SQL
3 votes171 views1 answer
Laravel database Using Named Bindings
SQL
3 votes161 views1 answer
Oracle rollback
SQL
0 vote395 views1 answer
Sql datum formatieren
SQL