Question

I have the following T-SQL query to delete a record from a series of tables:

DELETE FROM config INNER JOIN config_profile ON config.config_id = config_profile.config_id
INNER JOIN config_page ON config_profile.config_profile_id = config_page.config_profile_id
INNER JOIN config_field ON config_page.config_page_id = config_field.config_page_id
INNER JOIN config_constraint ON config_field.config_field_id = config_constraint.config_field_id
INNER JOIN config_constraint_type ON config_constraint.config_constraint_type_id = config_constraint_type.config_constraint_type_id
WHERE config.config_name = 'ConfigName' AND config_profile.profile_name = 'ProfileName'

But it keeps throwing the error:

Msg 156, Level 15, State 1, Line 1
Incorrect syntax near the keyword 'INNER'.

Looking at it, I’m not sure what I’m missing. Any help is appreciated.

Answer 1

You need two FROMs I know its wierd

DELETE 
FROM CONfig 
FROM 
config 
INNER JOIN config_profile ON config.config_id = config_profile.config_id
INNER JOIN config_page ON config_profile.config_profile_id = config_page.config_profile_id
INNER JOIN config_field ON config_page.config_page_id = config_field.config_page_id
INNER JOIN config_constraint ON config_field.config_field_id = config_constraint.config_field_id
INNER JOIN config_constraint_type ON config_constraint.config_constraint_type_id = config_constraint_type.config_constraint_type_id
WHERE config.config_name = 'ConfigName' AND config_profile.profile_name = 'ProfileName'

If you look at the online help here’s the syntax

[ WITH <common_table_expression> [ ,...n ] ]
DELETE 
    [ TOP (expression ) [ PERCENT ] ] 
    [ FROM ] 
    { <object> | rowset_function_limited 
      [ WITH ( <table_hint_limited> [ ...n ] ) ]
    }
    [ <OUTPUT Clause> ]
    [ FROM <table_source> [ ,...n ] ] 
    [ WHERE { <search_condition> 
            | { [ CURRENT OF 
                   { { [ GLOBAL ] cursor_name } 
                       | cursor_variable_name 
                   } 
                ]
              }
            } 
    ] 
    [ OPTION ( <Query Hint> [ ,...n ] ) ] 
[; ]

<object> ::=
{ 

    [ server_name.database_name.schema_name. 
      | database_name. [ schema_name ] . 
      | schema_name.
    ]
    table_or_view_name 
}

The first from is

FROM Is an optional keyword that can
be used between the DELETE keyword and
the target table_or_view_name, or
rowset_function_limited.

The second From is

FROM Specifies an
additional FROM clause. This
Transact-SQL extension to DELETE
allows specifying data from
and deleting the
corresponding rows from the table in
the first FROM clause.

This extension, specifying a join, can
be used instead of a subquery in the
WHERE clause to identify rows to be
removed.

For more information, see FROM
(Transact-SQL).

As Tony points out you can optionally Drop the first FROM so its a bit more readable

DELETE 
   Config 
FROM 
   config ....