expressions sql_order_by.ts

100% Statements 13/13

100% Branches 1/1

100% Functions 1/1

100% Lines 13/13

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1x import {Expression, plus, opt, alt, seq, altPrio} from "../combi";
import {IStatementRunnable} from "../statement_runnable";
import {Dynamic} from "./dynamic";
import {SQLFieldName} from "./sql_field_name";
 
export class SQLOrderBy extends Expression {
  public getRunnable(): IStatementRunnable {
    const ding = alt("ASCENDING", "DESCENDING");
    const ofields = plus(seq(SQLFieldName, opt(ding), opt(",")));
    const order = seq("ORDER BY", altPrio("PRIMARY KEY", Dynamic, ofields));
    return order;
  }
}