RelationalQueryableExtensions.FromSql Method
Definition
Important
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Overloads
| FromSql<TEntity>(DbSet<TEntity>, FormattableString) |
Creates a LINQ query based on an interpolated string representing a SQL query. |
| FromSql<TEntity>(IQueryable<TEntity>, FormattableString) |
Obsolete.
Creates a LINQ query based on an interpolated string representing a SQL query.
If the database provider supports composing on the supplied SQL, you can compose on top of the raw SQL query using
LINQ operators -
As with any API that accepts SQL it is important to parameterize any user input to protect against a SQL injection
attack. You can include interpolated parameter place holders in the SQL query string. Any interpolated parameter values
you supply will automatically be converted to a DbParameter -
|
| FromSql<TEntity>(IQueryable<TEntity>, RawSqlString, Object[]) |
Obsolete.
Creates a LINQ query based on a raw SQL query.
If the database provider supports composing on the supplied SQL, you can compose on top of the raw SQL query using
LINQ operators -
As with any API that accepts SQL it is important to parameterize any user input to protect against a SQL injection
attack. You can include parameter place holders in the SQL query string and then supply parameter values as additional
arguments. Any parameter values you supply will automatically be converted to a DbParameter -
This overload also accepts DbParameter instances as parameter values. This allows you to use named
parameters in the SQL query string -
|
| FromSql<TEntity>(IQueryable<TEntity>, String, Object[]) |
Creates a LINQ query based on a raw SQL query.
If the database provider supports composing on the supplied SQL, you can compose on top of the raw SQL query using
LINQ operators -
As with any API that accepts SQL it is important to parameterize any user input to protect against a SQL injection
attack. You can include parameter place holders in the SQL query string and then supply parameter values as additional
arguments. Any parameter values you supply will automatically be converted to a DbParameter -
You can also construct a DbParameter and supply it to as a parameter value. This allows you to use named
parameters in the SQL query string -
|
FromSql<TEntity>(DbSet<TEntity>, FormattableString)
Creates a LINQ query based on an interpolated string representing a SQL query.
public static System.Linq.IQueryable<TEntity> FromSql<TEntity> (this Microsoft.EntityFrameworkCore.DbSet<TEntity> source, FormattableString sql) where TEntity : class;static member FromSql : Microsoft.EntityFrameworkCore.DbSet<'Entity (requires 'Entity : null)> * FormattableString -> System.Linq.IQueryable<'Entity (requires 'Entity : null)> (requires 'Entity : null)<Extension()>
Public Function FromSql(Of TEntity As Class) (source As DbSet(Of TEntity), sql As FormattableString) As IQueryable(Of TEntity)Type Parameters
- TEntity
The type of the elements of source.
Parameters
- source
- DbSet<TEntity>
An IQueryable<T> to use as the base of the interpolated string SQL query (typically a DbSet<TEntity>).
The interpolated string representing a SQL query with parameters.
Returns
An IQueryable<T> representing the interpolated string SQL query.
Remarks
If the database provider supports composing on the supplied SQL, you can compose on top of the raw SQL query using LINQ operators.
As with any API that accepts SQL it is important to parameterize any user input to protect against a SQL injection attack. You can include interpolated parameter place holders in the SQL query string. Any interpolated parameter values you supply will automatically be converted to a DbParameter.
See Executing raw SQL commands with EF Core for more information and examples.
Applies to
FromSql<TEntity>(IQueryable<TEntity>, FormattableString)
Caution
For returning objects from SQL queries using plain strings, use FromSqlRaw instead. For returning objects from SQL queries using interpolated string syntax to create parameters, use FromSqlInterpolated instead. Call either new method directly on the DbSet at the root of the query.
Creates a LINQ query based on an interpolated string representing a SQL query.
If the database provider supports composing on the supplied SQL, you can compose on top of the raw SQL query using
LINQ operators - context.Blogs.FromSql("SELECT * FROM dbo.Blogs").OrderBy(b => b.Name).
As with any API that accepts SQL it is important to parameterize any user input to protect against a SQL injection
attack. You can include interpolated parameter place holders in the SQL query string. Any interpolated parameter values
you supply will automatically be converted to a DbParameter -
context.Blogs.FromSql($"SELECT * FROM [dbo].[SearchBlogs]({userSuppliedSearchTerm})").
public static System.Linq.IQueryable<TEntity> FromSql<TEntity> (this System.Linq.IQueryable<TEntity> source, FormattableString sql) where TEntity : class;[System.Obsolete("For returning objects from SQL queries using plain strings, use FromSqlRaw instead. For returning objects from SQL queries using interpolated string syntax to create parameters, use FromSqlInterpolated instead. Call either new method directly on the DbSet at the root of the query.", true)]
public static System.Linq.IQueryable<TEntity> FromSql<TEntity> (this System.Linq.IQueryable<TEntity> source, FormattableString sql) where TEntity : class;static member FromSql : System.Linq.IQueryable<'Entity (requires 'Entity : null)> * FormattableString -> System.Linq.IQueryable<'Entity (requires 'Entity : null)> (requires 'Entity : null)[<System.Obsolete("For returning objects from SQL queries using plain strings, use FromSqlRaw instead. For returning objects from SQL queries using interpolated string syntax to create parameters, use FromSqlInterpolated instead. Call either new method directly on the DbSet at the root of the query.", true)>]
static member FromSql : System.Linq.IQueryable<'Entity (requires 'Entity : null)> * FormattableString -> System.Linq.IQueryable<'Entity (requires 'Entity : null)> (requires 'Entity : null)<Extension()>
Public Function FromSql(Of TEntity As Class) (source As IQueryable(Of TEntity), sql As FormattableString) As IQueryable(Of TEntity)Type Parameters
- TEntity
The type of the elements of source.
Parameters
- source
- IQueryable<TEntity>
An IQueryable<T> to use as the base of the interpolated string SQL query (typically a DbSet<TEntity>).
The interpolated string representing a SQL query.
Returns
An IQueryable<T> representing the interpolated string SQL query.
- Attributes
Applies to
FromSql<TEntity>(IQueryable<TEntity>, RawSqlString, Object[])
Caution
For returning objects from SQL queries using plain strings, use FromSqlRaw instead. For returning objects from SQL queries using interpolated string syntax to create parameters, use FromSqlInterpolated instead. Call either new method directly on the DbSet at the root of the query.
Creates a LINQ query based on a raw SQL query.
If the database provider supports composing on the supplied SQL, you can compose on top of the raw SQL query using
LINQ operators - context.Blogs.FromSql("SELECT * FROM dbo.Blogs").OrderBy(b => b.Name).
As with any API that accepts SQL it is important to parameterize any user input to protect against a SQL injection
attack. You can include parameter place holders in the SQL query string and then supply parameter values as additional
arguments. Any parameter values you supply will automatically be converted to a DbParameter -
context.Blogs.FromSql("SELECT * FROM [dbo].[SearchBlogs]({0})", userSuppliedSearchTerm).
This overload also accepts DbParameter instances as parameter values. This allows you to use named
parameters in the SQL query string -
context.Blogs.FromSql("SELECT * FROM [dbo].[SearchBlogs]({@searchTerm})", new SqlParameter("@searchTerm", userSuppliedSearchTerm))
public static System.Linq.IQueryable<TEntity> FromSql<TEntity> (this System.Linq.IQueryable<TEntity> source, Microsoft.EntityFrameworkCore.RawSqlString sql, params object[] parameters) where TEntity : class;[System.Obsolete("For returning objects from SQL queries using plain strings, use FromSqlRaw instead. For returning objects from SQL queries using interpolated string syntax to create parameters, use FromSqlInterpolated instead. Call either new method directly on the DbSet at the root of the query.", true)]
public static System.Linq.IQueryable<TEntity> FromSql<TEntity> (this System.Linq.IQueryable<TEntity> source, Microsoft.EntityFrameworkCore.RawSqlString sql, params object[] parameters) where TEntity : class;static member FromSql : System.Linq.IQueryable<'Entity (requires 'Entity : null)> * Microsoft.EntityFrameworkCore.RawSqlString * obj[] -> System.Linq.IQueryable<'Entity (requires 'Entity : null)> (requires 'Entity : null)[<System.Obsolete("For returning objects from SQL queries using plain strings, use FromSqlRaw instead. For returning objects from SQL queries using interpolated string syntax to create parameters, use FromSqlInterpolated instead. Call either new method directly on the DbSet at the root of the query.", true)>]
static member FromSql : System.Linq.IQueryable<'Entity (requires 'Entity : null)> * Microsoft.EntityFrameworkCore.RawSqlString * obj[] -> System.Linq.IQueryable<'Entity (requires 'Entity : null)> (requires 'Entity : null)<Extension()>
Public Function FromSql(Of TEntity As Class) (source As IQueryable(Of TEntity), sql As RawSqlString, ParamArray parameters As Object()) As IQueryable(Of TEntity)Type Parameters
- TEntity
The type of the elements of source.
Parameters
- source
- IQueryable<TEntity>
An IQueryable<T> to use as the base of the raw SQL query (typically a DbSet<TEntity>).
- sql
- RawSqlString
The raw SQL query. NB. A string literal may be passed here because RawSqlString is implicitly convertible to string.
- parameters
- Object[]
The values to be assigned to parameters.
Returns
An IQueryable<T> representing the raw SQL query.
- Attributes
Applies to
FromSql<TEntity>(IQueryable<TEntity>, String, Object[])
Creates a LINQ query based on a raw SQL query.
If the database provider supports composing on the supplied SQL, you can compose on top of the raw SQL query using
LINQ operators - context.Blogs.FromSql("SELECT * FROM dbo.Blogs").OrderBy(b => b.Name).
As with any API that accepts SQL it is important to parameterize any user input to protect against a SQL injection
attack. You can include parameter place holders in the SQL query string and then supply parameter values as additional
arguments. Any parameter values you supply will automatically be converted to a DbParameter -
context.Blogs.FromSql("SELECT * FROM [dbo].[SearchBlogs]({0})", userSuppliedSearchTerm).
You can also construct a DbParameter and supply it to as a parameter value. This allows you to use named
parameters in the SQL query string -
context.Blogs.FromSql("SELECT * FROM [dbo].[SearchBlogs]({@searchTerm})", new SqlParameter("@searchTerm", userSuppliedSearchTerm))
public static System.Linq.IQueryable<TEntity> FromSql<TEntity> (this System.Linq.IQueryable<TEntity> source, string sql, params object[] parameters) where TEntity : class;static member FromSql : System.Linq.IQueryable<'Entity (requires 'Entity : null)> * string * obj[] -> System.Linq.IQueryable<'Entity (requires 'Entity : null)> (requires 'Entity : null)<Extension()>
Public Function FromSql(Of TEntity As Class) (source As IQueryable(Of TEntity), sql As String, ParamArray parameters As Object()) As IQueryable(Of TEntity)Type Parameters
- TEntity
The type of the elements of source.
Parameters
- source
- IQueryable<TEntity>
An IQueryable<T> to use as the base of the raw SQL query (typically a DbSet<TEntity>).
- sql
- String
The raw SQL query.
- parameters
- Object[]
The values to be assigned to parameters.
Returns
An IQueryable<T> representing the raw SQL query.
Applies to
Entity Framework