What is TEXTIMAGE_ON [PRIMARY]?

Question

I worked on many tables and all had this thing:

CREATE TABLE Persons(
    [id] [int] IDENTITY(1,1) NOT NULL,
    [modified_on] [datetime] NULL,
    [modified_by]         


        

Answer 1

From the MSDN

TEXTIMAGE_ON { filegroup | "default" }

Indicates that the text, ntext, image, xml, varchar(max), nvarchar(max), varbinary(max), and CLR user-defined type columns (including geometry and geography) are stored on the specified filegroup.

TEXTIMAGE_ON is not allowed if there are no large value columns in the table. TEXTIMAGE_ON cannot be specified if is specified. If "default" is specified, or if TEXTIMAGE_ON is not specified at all, the large value columns are stored in the default filegroup. The storage of any large value column data specified in CREATE TABLE cannot be subsequently altered.

NOTE: In this context, default is not a keyword. It is an identifier for the default filegroup and must be delimited, as in TEXTIMAGE_ON "default" or TEXTIMAGE_ON [default]. If "default" is specified, the QUOTED_IDENTIFIER option must be ON for the current session. This is the default setting.