table.select()

DOCS • API • DQL • Table • table.select()

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Programmatically perform an SELECT query.

See also ➞ SELECT

Syntax

table.select(
    fields?: Field[],
    modifiers?: QueryOptions | LimitClause | Callback,
): Promise<QueryResult>;

table.select(
    arg?: {
        fields?: Field[];
    } & QueryOptions | LimitClause | Callback
): Promise<QueryResult>;

Param	Interfaces	Description
fields?	Field	List of fields to select. Defaults to all fields if omitted.
modifiers?	QueryOptions LimitClause	Additional query modifiers. Can be Callback—a callback function that recieves the SelectStatement instance for building.
arg?	Field QueryOptions LimitClause	Argument for a single parameter pattern. Can be Callback—a callback function that recieves the SelectStatement instance for building.

└ QueryOptions

interface QueryOptions {
    where?: WhereClause;
    orderBy?: OrderByClause;
    groupBy?: GroupByClause;
    limit?: LimitClause;
}

Param	Interfaces	Description
where?	WhereClause	The WHERE clause.
orderBy?	OrderByClause	The ORDER BY clause.
groupBy?	GroupByClause	The GROUP BY clause.
limit?	LimitClause	The LIMIT clause.

└ QueryResult

type QueryResult = Array<object> | object;

Type	Interfaces	Description
Array<object>	-	An array of objects—the default query result.
object	-	A single object—the result of find by ID.

Usage

Call Patterns

Two-parameter call pattern:

/**
 * SELECT first_name, last_name, email
 * LIMIT 4
 */
const result = await table.select(['first_name', 'last_name', 'email'], 4);

Single-parameter call pattern:

/**
 * SELECT first_name, last_name, email
 */
const result = await table.select(['first_name', 'last_name', 'email']);

/**
 * SELECT *
 * LIMIT 4
 */const result = await table.select(4);

/**
 * SELECT first_name, last_name, email
 * LIMIT 4
 */
const result = await table.select({
    fields: ['first_name', 'last_name', 'email'],
    limit: 4
});

Zero-parameter call pattern:

/**
 * SELECT *
 */
const result = await table.select();

Find By ID

Find by ID—with actual ID name automatically figured by Linked QL:

/**
 * SELECT *
 * WHERE automatically_figured_primary_key_name = 4
 */
const result = await table.select({ where: 1 });
console.log(result); // single result object