Made FindPublisher return unique list of publishers

Author: umerfaruk

src/Adapters/Database/MySql/Repositories/Library/BookRepository.cs

@@ -237,7 +237,7 @@ public async Task<Page<string>> FindPublishers(int libraryId, string query, int
                 Offset = pageSize * (pageNumber - 1),
             };
 
-            var sql = @"Select Publisher 
+            var sql = @"Select DISTINCT Publisher 
                             From Book
                             Where LibraryId = @LibraryId
                             AND Publisher Like @Query
@@ -248,7 +248,7 @@ ORDER BY Publisher
 
             var result = await connection.QueryAsync<string>(command);
 
-            var sql2 = @"Select Count(*) 
+            var sql2 = @"Select COUNT(DISTINCT Publisher) 
                             From Book
                             Where LibraryId = @LibraryId
                             AND Publisher Like @Query";

src/Adapters/Database/SqlServer/Repositories/Library/BookRepository.cs

@@ -169,7 +169,7 @@ public async Task<Page<string>> FindPublishers(int libraryId, string query, int
                             PageSize = pageSize,
                         };
 
-            var sql = @"Select Publisher 
+            var sql = @"Select DISTINCT Publisher 
                             From Book
                             Where LibraryId = @LibraryId
                             AND Publisher Like @Query
@@ -181,8 +181,8 @@ ORDER BY Publisher
 
             var result = await connection.QueryAsync<string>(command);
 
-            var sql2 = @"Select Count(*) 
-                            From Book
+            var sql2 = @"Select COUNT(DISTINCT Publisher) 
+                            FROM Book
                             Where LibraryId = @LibraryId
                             AND Publisher Like @Query";