alter+column+datatype+in+snowflake

2025-05-26 10:55:31

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ALTER TABLE … ALTER COLUMN | Snowflake Documentation

ALTERTABLEt1ALTERCOLUMNc1DROPNOTNULL;ALTERTABLEt1MODIFYc2DROPDEFAULT,c3SETDEFAULTseq5.nextval;ALTERTABLEt1ALTERc4SETDATATYPEVARCHAR(50),COLUMNc4DROPDEFAULT;ALTERTABLEt1ALTERc5COMMENT'50 character column';DESCTABLEt1;+---+---+---+---+---+---+---+---+---+---+| name | type | kind | ...
ALTER TABLE | Snowflake Documentation

002023 (22000): SQL compilation error: Expression type does not match column data type, expecting DATE but got VARCHAR(8) for column C6 For additional details about table column actions, see: CREATE TABLE CREATE | ALTER TABLE … CONSTRAINT CREATE MASKING POLICY CREATE TAG ADD COLUMN operations...
ALTER TABLE … ALTER COLUMN | Snowflake Documentation

ALTERTABLEt1ALTERCOLUMNc1DROPNOTNULL;ALTERTABLEt1MODIFYc2DROPDEFAULT,c3SETDEFAULTseq5.nextval;ALTERTABLEt1ALTERc4SETDATATYPEVARCHAR(50),COLUMNc4DROPDEFAULT;ALTERTABLEt1ALTERc5COMMENT'50 character column';DESCTABLEt1;+---+---+---+---+---+---+---+---+---+---+| name | type | kind | ...