Struct QueryDataParams 

pub struct QueryDataParams {
    pub data: String,
    pub sql: String,
    pub format: Option<String>,
    pub table_name: Option<String>,
    pub schema: Option<Value>,
}

Schema override shape shared by query_data, query_file, load_data, and load_file. Documented here once so all four tools can reference it without duplicating the prose in every field doc.

Pass a JSON object mapping column name → Hyper type string, for example:

{ "year": "INT", "population": "BIGINT", "entity": "TEXT" }

Override semantics (applied inside ingest):

• Keys are matched to columns by name (case-sensitive). Column ordering in the JSON object does not need to match the file; the inferred order from the file is preserved.
• Columns not listed in the override keep their inferred type — you only need to specify the columns you want to correct.
• Types are the Hyper SQL type spellings: INT, BIGINT, NUMERIC(38,0), DOUBLE PRECISION, TEXT, BOOL, DATE, TIMESTAMP.
• If you get a SchemaMismatch with suggestion to widen an integer column, the typical fix is { "col": "BIGINT" } or { "col": "NUMERIC(38,0)" }.

Before ingesting an unfamiliar file, prefer calling inspect_file first — it returns the inferred schema plus per-column min / max / null_count so you can build a minimal, correct override in one shot.

Parameters for the query_data one-shot tool.

Fields

data: String

JSON array of objects or CSV text.

sql: String

SQL query to run against the data. Reference the table by table_name (default data).

format: Option<String>

Data format: "json" or "csv". Auto-detected from the first byte when omitted ([/{ → JSON, otherwise CSV).

table_name: Option<String>

Table name exposed to the SQL query (default: data).

schema: Option<Value>

Partial schema override keyed by column name: {"col": "BIGINT", ...}. Only the listed columns are overridden; the rest keep their inferred type. See the struct-level docs on QueryDataParams and the inspect_file tool for type choices and diagnostics.

Trait Implementations

impl Debug for QueryDataParams

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for QueryDataParams

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for QueryDataParams

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.