Cómo obtener una lista de tablas sin restricción de clave principal en la base de datos de SQL Server - Tutorial de SQL Server / T-SQL, parte 58

Escenario:

Solución:

Select
   Table_CataLog as DatabaseName,
   Table_Schema as TableSchema,
   Table_Name as TableName      
from
   information_schema.tables T     
where
   Not Exists(
      Select
         1 
      from
         information_Schema.Table_Constraints C     
      where
         Constraint_Type='PRIMARY KEY'     
         and C.Table_Name=T.Table_Name     
         and C.Table_Schema=T.Table_Schema
   )     
   and Table_Type='BASE TABLE'