Struct TableFieldSchema

pub struct TableFieldSchema {
    pub categories: Option<TableFieldSchemaCategories>,
    pub collation: Option<String>,
    pub default_value_expression: Option<String>,
    pub description: Option<String>,
    pub fields: Option<Vec<TableFieldSchema>>,
    pub max_length: Option<i64>,
    pub mode: Option<String>,
    pub name: Option<String>,
    pub policy_tags: Option<TableFieldSchemaPolicyTags>,
    pub precision: Option<i64>,
    pub scale: Option<i64>,
    pub type_: Option<String>,
}

There is no detailed description.

This type is not used in any activity, and only used as part of another schema.

Fields

categories: Option<TableFieldSchemaCategories>

[Optional] The categories attached to this field, used for field-level access control.

collation: Option<String>

Optional. Collation specification of the field. It only can be set on string type field.

default_value_expression: Option<String>

Optional. A SQL expression to specify the default value for this field. It can only be set for top level fields (columns). You can use struct or array expression to specify default value for the entire struct or array. The valid SQL expressions are: - Literals for all data types, including STRUCT and ARRAY. - Following functions: - CURRENT_TIMESTAMP - CURRENT_TIME - CURRENT_DATE - CURRENT_DATETIME - GENERATE_UUID - RAND - SESSION_USER - ST_GEOGPOINT - Struct or array composed with the above allowed functions, for example, [CURRENT_DATE(), DATE ‘2020-01-01’]

description: Option<String>

[Optional] The field description. The maximum length is 1,024 characters.

fields: Option<Vec<TableFieldSchema>>

[Optional] Describes the nested schema fields if the type property is set to RECORD.

max_length: Option<i64>

[Optional] Maximum length of values of this field for STRINGS or BYTES. If max_length is not specified, no maximum length constraint is imposed on this field. If type = “STRING”, then max_length represents the maximum UTF-8 length of strings in this field. If type = “BYTES”, then max_length represents the maximum number of bytes in this field. It is invalid to set this field if type ≠ “STRING” and ≠ “BYTES”.

mode: Option<String>

[Optional] The field mode. Possible values include NULLABLE, REQUIRED and REPEATED. The default value is NULLABLE.

name: Option<String>

[Required] The field name. The name must contain only letters (a-z, A-Z), numbers (0-9), or underscores (_), and must start with a letter or underscore. The maximum length is 300 characters.

policy_tags: Option<TableFieldSchemaPolicyTags>

no description provided

precision: Option<i64>

[Optional] Precision (maximum number of total digits in base 10) and scale (maximum number of digits in the fractional part in base 10) constraints for values of this field for NUMERIC or BIGNUMERIC. It is invalid to set precision or scale if type ≠ “NUMERIC” and ≠ “BIGNUMERIC”. If precision and scale are not specified, no value range constraint is imposed on this field insofar as values are permitted by the type. Values of this NUMERIC or BIGNUMERIC field must be in this range when: - Precision (P) and scale (S) are specified: [-10P-S + 10-S, 10P-S - 10-S] - Precision (P) is specified but not scale (and thus scale is interpreted to be equal to zero): [-10P + 1, 10P - 1]. Acceptable values for precision and scale if both are specified: - If type = “NUMERIC”: 1 ≤ precision - scale ≤ 29 and 0 ≤ scale ≤ 9. - If type = “BIGNUMERIC”: 1 ≤ precision - scale ≤ 38 and 0 ≤ scale ≤ 38. Acceptable values for precision if only precision is specified but not scale (and thus scale is interpreted to be equal to zero): - If type = “NUMERIC”: 1 ≤ precision ≤ 29. - If type = “BIGNUMERIC”: 1 ≤ precision ≤ 38. If scale is specified but not precision, then it is invalid.

scale: Option<i64>

[Optional] See documentation for precision.

type_: Option<String>

[Required] The field data type. Possible values include STRING, BYTES, INTEGER, INT64 (same as INTEGER), FLOAT, FLOAT64 (same as FLOAT), NUMERIC, BIGNUMERIC, BOOLEAN, BOOL (same as BOOLEAN), TIMESTAMP, DATE, TIME, DATETIME, INTERVAL, RECORD (where RECORD indicates that the field contains a nested schema) or STRUCT (same as RECORD).

Trait Implementations

impl Clone for TableFieldSchema

fn clone(&self) -> TableFieldSchema

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TableFieldSchema

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for TableFieldSchema

fn default() -> TableFieldSchema

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TableFieldSchema

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TableFieldSchema

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Part for TableFieldSchema