20 lines
577 B
C#
20 lines
577 B
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using Microsoft.EntityFrameworkCore;
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namespace DataLayer
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{
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public static class RemoveOrphansCommand
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{
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public static int RemoveOrphans(this LibationContext context)
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=> context.Database.ExecuteSqlRaw(@"
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delete c
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from Contributors c
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left join BookContributor bc on c.ContributorId = bc.ContributorId
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left join Books b on bc.BookId = b.BookId
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where bc.ContributorId is null
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");
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}
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}
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