import type { NamedObjectInfo, RangeDefinition, TransformType } from 'dbgate-types';
export interface Select {
    commandType: 'select';
    from: FromDefinition;
    columns?: ResultField[];
    topRecords?: number;
    range?: RangeDefinition;
    distinct?: boolean;
    selectAll?: boolean;
    orderBy?: OrderByExpression[];
    groupBy?: Expression[];
    where?: Condition;
    having?: Condition;
}
export type UpdateField = Expression & {
    targetColumn: string;
};
export interface Update {
    commandType: 'update';
    fields: UpdateField[];
    from: FromDefinition;
    where?: Condition;
    alterTableUpdateSyntax?: boolean;
}
export interface Delete {
    commandType: 'delete';
    from: FromDefinition;
    where?: Condition;
    alterTableDeleteSyntax?: boolean;
}
export interface Insert {
    commandType: 'insert';
    fields: UpdateField[];
    targetTable: NamedObjectInfo;
    insertWhereNotExistsCondition?: Condition;
}
export interface AllowIdentityInsert {
    commandType: 'allowIdentityInsert';
    targetTable: NamedObjectInfo;
    allow: boolean;
}
export type Command = Select | Update | Delete | Insert | AllowIdentityInsert;
export interface UnaryCondition {
    expr: Expression;
}
export interface ExpressionCondition extends UnaryCondition {
    conditionType: 'expression';
}
export interface BinaryCondition {
    conditionType: 'binary';
    operator: '=' | '!=' | '<>' | '<' | '>' | '>=' | '<=';
    left: Expression;
    right: Expression;
}
export interface LikeCondition {
    conditionType: 'like' | 'notLike';
    left: Expression;
    right: Expression;
}
export interface NotCondition {
    conditionType: 'not';
    condition: Condition;
}
export interface TestCondition extends UnaryCondition {
    conditionType: 'isNull' | 'isNotNull' | 'isEmpty' | 'isNotEmpty';
}
export interface SpecificPredicateCondition extends UnaryCondition {
    conditionType: 'specificPredicate';
    predicate: string;
}
export interface CompoudCondition {
    conditionType: 'and' | 'or';
    conditions: Condition[];
}
export interface ExistsCondition {
    conditionType: 'exists';
    subQuery: Select;
}
export interface NotExistsCondition {
    conditionType: 'notExists';
    subQuery: Select;
}
export interface BetweenCondition {
    conditionType: 'between';
    expr: Expression;
    left: Expression;
    right: Expression;
}
export interface InCondition {
    conditionType: 'in';
    expr: Expression;
    values: any[];
}
export interface NotInCondition {
    conditionType: 'notIn';
    expr: Expression;
    values: any[];
}
export interface RawTemplateCondition {
    conditionType: 'rawTemplate';
    templateSql: string;
    expr: Expression;
}
export interface AnyColumnPassEvalOnlyCondition {
    conditionType: 'anyColumnPass';
    placeholderCondition: Condition;
}
export type Condition = BinaryCondition | NotCondition | TestCondition | CompoudCondition | LikeCondition | ExistsCondition | NotExistsCondition | BetweenCondition | InCondition | NotInCondition | RawTemplateCondition | AnyColumnPassEvalOnlyCondition | SpecificPredicateCondition | ExpressionCondition;
export interface Source {
    name?: NamedObjectInfo;
    alias?: string;
    subQuery?: Select;
    subQueryString?: string;
}
export type JoinType = 'LEFT JOIN' | 'INNER JOIN' | 'RIGHT JOIN' | 'CROSS JOIN';
export type Relation = Source & {
    conditions?: Condition[];
    joinType: JoinType;
};
export type FromDefinition = Source & {
    relations?: Relation[];
};
export interface ColumnRefExpression {
    exprType: 'column';
    columnName: string;
    source?: Source;
}
export interface ValueExpression {
    exprType: 'value';
    value: any;
    dataType?: string;
}
export interface PlaceholderExpression {
    exprType: 'placeholder';
}
export interface RawExpression {
    exprType: 'raw';
    sql: string;
}
export interface UnaryRawExpression {
    exprType: 'unaryRaw';
    expr: Expression;
    beforeSql?: string;
    afterSql?: string;
}
export interface CallExpression {
    exprType: 'call';
    func: string;
    args: Expression[];
    argsPrefix?: string;
}
export interface MethodCallExpression {
    exprType: 'methodCall';
    method: string;
    args: Expression[];
    thisObject: Expression;
}
export interface TranformExpression {
    exprType: 'transform';
    expr: Expression;
    transform: TransformType;
}
export interface RowNumberExpression {
    exprType: 'rowNumber';
    orderBy: OrderByExpression[];
}
export type Expression = ColumnRefExpression | ValueExpression | PlaceholderExpression | RawExpression | UnaryRawExpression | CallExpression | MethodCallExpression | TranformExpression | RowNumberExpression;
export type OrderByExpression = Expression & {
    direction: 'ASC' | 'DESC';
};
export type ResultField = Expression & {
    alias?: string;
};