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import type { CasingCache } from "../casing.cjs";
import { entityKind } from "../entity.cjs";
import type { SelectResult } from "../query-builders/select.types.cjs";
import { Subquery } from "../subquery.cjs";
import type { Assume, Equal } from "../utils.cjs";
import type { AnyColumn } from "../column.cjs";
import { Column } from "../column.cjs";
import { Table } from "../table.cjs";
/**
 * This class is used to indicate a primitive param value that is used in `sql` tag.
 * It is only used on type level and is never instantiated at runtime.
 * If you see a value of this type in the code, its runtime value is actually the primitive param value.
 */
export declare class FakePrimitiveParam {
    static readonly [entityKind]: string;
}
export type Chunk = string | Table | View | AnyColumn | Name | Param | Placeholder | SQL;
export interface BuildQueryConfig {
    casing: CasingCache;
    escapeName(name: string): string;
    escapeParam(num: number, value: unknown): string;
    escapeString(str: string): string;
    prepareTyping?: (encoder: DriverValueEncoder<unknown, unknown>) => QueryTypingsValue;
    paramStartIndex?: {
        value: number;
    };
    inlineParams?: boolean;
    invokeSource?: 'indexes' | undefined;
}
export type QueryTypingsValue = 'json' | 'decimal' | 'time' | 'timestamp' | 'uuid' | 'date' | 'none';
export interface Query {
    sql: string;
    params: unknown[];
}
export interface QueryWithTypings extends Query {
    typings?: QueryTypingsValue[];
}
/**
 * Any value that implements the `getSQL` method. The implementations include:
 * - `Table`
 * - `Column`
 * - `View`
 * - `Subquery`
 * - `SQL`
 * - `SQL.Aliased`
 * - `Placeholder`
 * - `Param`
 */
export interface SQLWrapper {
    getSQL(): SQL;
    shouldOmitSQLParens?(): boolean;
}
export declare function isSQLWrapper(value: unknown): value is SQLWrapper;
export declare class StringChunk implements SQLWrapper {
    static readonly [entityKind]: string;
    readonly value: string[];
    constructor(value: string | string[]);
    getSQL(): SQL<unknown>;
}
export declare class SQL<T = unknown> implements SQLWrapper {
    readonly queryChunks: SQLChunk[];
    static readonly [entityKind]: string;
    _: {
        brand: 'SQL';
        type: T;
    };
    private shouldInlineParams;
    constructor(queryChunks: SQLChunk[]);
    append(query: SQL): this;
    toQuery(config: BuildQueryConfig): QueryWithTypings;
    buildQueryFromSourceParams(chunks: SQLChunk[], _config: BuildQueryConfig): Query;
    private mapInlineParam;
    getSQL(): SQL;
    as(alias: string): SQL.Aliased<T>;
    /**
     * @deprecated
     * Use ``sql<DataType>`query`.as(alias)`` instead.
     */
    as<TData>(): SQL<TData>;
    /**
     * @deprecated
     * Use ``sql<DataType>`query`.as(alias)`` instead.
     */
    as<TData>(alias: string): SQL.Aliased<TData>;
    mapWith<TDecoder extends DriverValueDecoder<any, any> | DriverValueDecoder<any, any>['mapFromDriverValue']>(decoder: TDecoder): SQL<GetDecoderResult<TDecoder>>;
    inlineParams(): this;
    /**
     * This method is used to conditionally include a part of the query.
     *
     * @param condition - Condition to check
     * @returns itself if the condition is `true`, otherwise `undefined`
     */
    if(condition: any | undefined): this | undefined;
}
export type GetDecoderResult<T> = T extends Column ? T['_']['data'] : T extends DriverValueDecoder<infer TData, any> | DriverValueDecoder<infer TData, any>['mapFromDriverValue'] ? TData : never;
/**
 * Any DB name (table, column, index etc.)
 */
export declare class Name implements SQLWrapper {
    readonly value: string;
    static readonly [entityKind]: string;
    protected brand: 'Name';
    constructor(value: string);
    getSQL(): SQL<unknown>;
}
/**
 * Any DB name (table, column, index etc.)
 * @deprecated Use `sql.identifier` instead.
 */
export declare function name(value: string): Name;
export interface DriverValueDecoder<TData, TDriverParam> {
    mapFromDriverValue(value: TDriverParam): TData;
}
export interface DriverValueEncoder<TData, TDriverParam> {
    mapToDriverValue(value: TData): TDriverParam | SQL;
}
export declare function isDriverValueEncoder(value: unknown): value is DriverValueEncoder<any, any>;
export declare const noopDecoder: DriverValueDecoder<any, any>;
export declare const noopEncoder: DriverValueEncoder<any, any>;
export interface DriverValueMapper<TData, TDriverParam> extends DriverValueDecoder<TData, TDriverParam>, DriverValueEncoder<TData, TDriverParam> {
}
export declare const noopMapper: DriverValueMapper<any, any>;
/** Parameter value that is optionally bound to an encoder (for example, a column). */
export declare class Param<TDataType = unknown, TDriverParamType = TDataType> implements SQLWrapper {
    readonly value: TDataType;
    readonly encoder: DriverValueEncoder<TDataType, TDriverParamType>;
    static readonly [entityKind]: string;
    protected brand: 'BoundParamValue';
    /**
     * @param value - Parameter value
     * @param encoder - Encoder to convert the value to a driver parameter
     */
    constructor(value: TDataType, encoder?: DriverValueEncoder<TDataType, TDriverParamType>);
    getSQL(): SQL<unknown>;
}
/** @deprecated Use `sql.param` instead. */
export declare function param<TData, TDriver>(value: TData, encoder?: DriverValueEncoder<TData, TDriver>): Param<TData, TDriver>;
/**
 * Anything that can be passed to the `` sql`...` `` tagged function.
 */
export type SQLChunk = StringChunk | SQLChunk[] | SQLWrapper | SQL | Table | View | Subquery | AnyColumn | Param | Name | undefined | FakePrimitiveParam | Placeholder;
export declare function sql<T>(strings: TemplateStringsArray, ...params: any[]): SQL<T>;
export declare namespace sql {
    function empty(): SQL;
    /** @deprecated - use `sql.join()` */
    function fromList(list: SQLChunk[]): SQL;
    /**
     * Convenience function to create an SQL query from a raw string.
     * @param str The raw SQL query string.
     */
    function raw(str: string): SQL;
    /**
     * Join a list of SQL chunks with a separator.
     * @example
     * ```ts
     * const query = sql.join([sql`a`, sql`b`, sql`c`]);
     * // sql`abc`
     * ```
     * @example
     * ```ts
     * const query = sql.join([sql`a`, sql`b`, sql`c`], sql`, `);
     * // sql`a, b, c`
     * ```
     */
    function join(chunks: SQLChunk[], separator?: SQLChunk): SQL;
    /**
     * Create a SQL chunk that represents a DB identifier (table, column, index etc.).
     * When used in a query, the identifier will be escaped based on the DB engine.
     * For example, in PostgreSQL, identifiers are escaped with double quotes.
     *
     * **WARNING: This function does not offer any protection against SQL injections, so you must validate any user input beforehand.**
     *
     * @example ```ts
     * const query = sql`SELECT * FROM ${sql.identifier('my-table')}`;
     * // 'SELECT * FROM "my-table"'
     * ```
     */
    function identifier(value: string): Name;
    function placeholder<TName extends string>(name: TName): Placeholder<TName>;
    function param<TData, TDriver>(value: TData, encoder?: DriverValueEncoder<TData, TDriver>): Param<TData, TDriver>;
}
export declare namespace SQL {
    class Aliased<T = unknown> implements SQLWrapper {
        readonly sql: SQL;
        readonly fieldAlias: string;
        static readonly [entityKind]: string;
        _: {
            brand: 'SQL.Aliased';
            type: T;
        };
        constructor(sql: SQL, fieldAlias: string);
        getSQL(): SQL;
    }
}
export declare class Placeholder<TName extends string = string, TValue = any> implements SQLWrapper {
    readonly name: TName;
    static readonly [entityKind]: string;
    protected: TValue;
    constructor(name: TName);
    getSQL(): SQL;
}
/** @deprecated Use `sql.placeholder` instead. */
export declare function placeholder<TName extends string>(name: TName): Placeholder<TName>;
export declare function fillPlaceholders(params: unknown[], values: Record<string, unknown>): unknown[];
export type ColumnsSelection = Record<string, unknown>;
export declare abstract class View<TName extends string = string, TExisting extends boolean = boolean, TSelection extends ColumnsSelection = ColumnsSelection> implements SQLWrapper {
    static readonly [entityKind]: string;
    _: {
        brand: 'View';
        viewBrand: string;
        name: TName;
        existing: TExisting;
        selectedFields: TSelection;
    };
    readonly $inferSelect: InferSelectViewModel<View<Assume<TName, string>, TExisting, TSelection>>;
    constructor({ name, schema, selectedFields, query }: {
        name: TName;
        schema: string | undefined;
        selectedFields: ColumnsSelection;
        query: SQL | undefined;
    });
    getSQL(): SQL<unknown>;
}
export declare function isView(view: unknown): view is View;
export declare function getViewName<T extends View>(view: T): T['_']['name'];
export type InferSelectViewModel<TView extends View> = Equal<TView['_']['selectedFields'], {
    [x: string]: unknown;
}> extends true ? {
    [x: string]: unknown;
} : SelectResult<TView['_']['selectedFields'], 'single', Record<TView['_']['name'], 'not-null'>>;

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