Source
Data type conversion
Users can explicitly convert a value from one data type to another. This is called explicit casting. In some situations, Snowflake converts a value to another data type automatically. This is called implicit casting or coercion.
SYSTEM$CAST_MULTI_PARTY_APPROVAL_VOTE
Casts a vote on a pending Multi - party Approval request. An approver calls this function with a decision of APPROVE or REJECT to vote on a request. A requester can call it with REJECT to cancel their own pending request before it is…
INVALID_NUMERIC_TYPE_CAST_COUNT (system data metric function)
Returns the count of non - NULL column values that cannot be parsed as numeric. Use this function to detect non - numeric data in columns that are expected to contain numbers (for example, after CSV imports or user input).
INVALID_NUMERIC_TYPE_CAST_PERCENT (system data metric function)
Returns the percentage of non - NULL column values that cannot be parsed as numeric. The percentage is computed over the total row count, including NULL values in the denominator.
Structured data types
You use structured types when accessing data from a structured type column in a table. You can cast a semi - structured ARRAY, OBJECT, or VARIANT value to a corresponding structured type (for example, an ARRAY value to an ARRAY value of…
SQL statement execution error - Failed to cast variant value to TIMESTAMP_TZ
Snowflake will attempt to implicitly cast the VARIANT type to the correct timestamp data type. However, depending on the format defined in the parameter TIMESTAMP_INPUT_FORMAT, the format is not recognized as a valid timestamp and will…
CAST , ::
Converts a value of one data type into another data type. The semantics of CAST are the same as the semantics of the corresponding TO_ datatype conversion functions. If the cast is not possible, an error is raised.
BOOLEAN to NUMBER cast: Result type follows the target NUMBER type (Pending)
When you cast a BOOLEAN value to a NUMBER type, Snowflake now resolves the result type the same way it does for other source types, such as VARCHAR and NUMBER. If you specify an explicit precision and scale, the result is typed as…
TRY_CAST
A special version of CAST , :: that is available for a subset of data type conversions. It performs the same operation (i.e. converts a value of one data type into another data type), but returns a NULL value instead of raising an error…
Teradata - CREATE TYPE
Teradata structured types in SYSUDTLIB (and similar) are translated when the definition includes a CAST FROM clause that allows reduction to a single Snowflake scalar type, or when the body is a simple attribute list without such a cast…