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 votes144 views2 answers
Mysql all columns
SQL
3 votes163 views1 answer
Oracle revoke
SQL
0 vote278 views1 answer
Oracle convert int to date
SQL
0 vote142 views1 answer
Restore backup "text" postgresql command line
SQL
0 vote150 views1 answer
Database traccar
SQL
0 vote155 views1 answer
Foreign key type uniqu mysql
SQL
0 vote153 views2 answers
FIND OUT THE NAME HIGHEST SALARY SQL
SQL
0 vote163 views1 answer
Renommer schema sql
SQL
14 votes151 views3 answers
Sql trim from string
SQL
35 votes177 views5 answers
Sql alter column
SQL