Gbase8s database into external clause

INTO EXTERNAL Clause to unload the query results into an external table , Create a default external table description , When you reload later

These files can be used .

Use SELECT INTO EXTERNAL Of the statement Table Options Clause to specify the format of the data unloaded in the external table .

INTO EXTERNAL The clause will CREATE EXTERNAL TABLE . . . SAMEAS And INSERT INTO . . .

SELECT The functions of statements are grouped together .

INTO EXTERNAL Clause override in EXTERNAL Any pre-existing row in the table .

The following table describes the keywords that apply to offload data . If you want to specify additional table options in the external table description for reloading the table later

term , Please refer to Table Options .

stay SELECT … INTO EXTERNAL In the sentence , You can specify in addition to the fixed formatting options CREATE

EXTERNAL TABLE Statement .

When the format type of the created data file or delimited text （ If you use DELIMITED Key words ） or GBase

8s Internal data format text （ If you use GBASEDBT Key words ） when , You can use it. INTO

EXTERNAL Clause . You cannot use it for fixed format uninstallation .

keyword effect

DELIMITER Specifies the characters that separate fields in delimited text files

ESCAPE Indicates that the database server recognizes that the ASCII The fields in the text data file are embedded as separators

In ASCII Special characters . Immediately after DELIMITER designated field_delimiter Delimited

The default escape character before any instance , The character here is the letter value in the data . perhaps

You include or you omit ESCAPE keyword , By default , This feature is enabled , perhaps

You can specify ESCAPE ON Keywords to make your SQL Readers of the code have a better understanding of enabling

This feature . To prevent letters in the data field_delimiter The delimiter character is escaped , you

Must specify ESCAPE OFF keyword .

By default ,ESCAPE The key word is in the field_delimiter An escape inserted before a character

The character is a backslash （\） character . But if it will DEFAULTESCCHAR The configuration parameters are set to single

Character value , Replace the backslash of the delimiter character with that character （\） Use as letter , When specifying

ESCAPE or ESCAPE ON when .

FORMAT Specify the format of the data in the data file

RECORDEND Specifies the characters that separate records in delimited text files

To get more information about external tables , see also CREATE EXTERNAL TABLE sentence .