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

2 votes112 views1 answer
Postgresql drop primary key constraint
SQL
0 vote104 views1 answer
What is the use of index in mysql table
SQL
0 vote110 views1 answer
Rabbitmq ui not working
SQL
0 vote123 views1 answer
Calculer pourcentage mysql
SQL
0 vote166 views1 answer
How to find the most occuring in SQL
SQL
14 votes103 views3 answers
Alter foreign key
SQL
0 vote101 views1 answer
Excute raw query
SQL
0 vote109 views1 answer
Remove mysql from centos 7
SQL
0 vote112 views1 answer
Modifier une valeur sql
SQL
-2 votes110 views1 answer
Modify column name in tsql
SQL