Updating xml clob in oracle
Updating xml clob in oracle - Chatroulette100
What you want to do when a kid doesn’t have a wishlist list (indeed hard to imagine) is do an outerjoin. First lets add an extra kid to our XML who doesn’t have a wishlist: SELECT extractvalue (value (kids), '*/name') childname , extractvalue (value (wl), '*/artno') Article_number , extractvalue (value (wl), '*/description') description , extractvalue (value (wl), '*/price') price FROM t , TABLE (xmlsequence (extract (wishlist, '*/child'))) kids , TABLE (xmlsequence (extract (value (kids), '*/wishlist/article')))( ) wl WHERE id = 2And that’s all there is to it…You can refer to attributes using an xpath-expression.
Our Sinterklaas is probably derived from the same legend as Santa Clause. They are eagerly anticipating the arrival of Sinterklaas. Because it is not possible to properly format code in the comments section, I put it up here.
DECLARE dest_clob CLOB; src_clob BFILE := BFILENAME(‘EXAMPLE_LOB_DIR’, ‘filter.xml’); dst_offset number := 1 ; src_offset number := 1 ; lang_ctx number := DBMS_LOB.
DEFAULT_LANG_CTX; warning number; BEGIN DBMS_OUTPUT. ENABLE(100000); — ———————————————————————– — THE FOLLOWING BLOCK OF CODE WILL ATTEMPT TO INSERT / WRITE THE CONTENTS — OF AN XML FILE TO A CLOB COLUMN. Load CLOBFrom File() API WHICH *DOES* SUPPORT MULTI-BYTE — CHARACTER SET DATA.
And there you have it, going from a single XML to filling two tables with a Master-Detail relation (sometimes called a Parent-Child relation, where the Parent table in this example is the KIDS table.) in a single SQL statement.
As I am using a Oracle 10r2 database on my laptop, there is also a different kind of syntax you can use.
The Detail data is the actual wishlist, the toys that the child would like to get from Santa Clause.
Let assume for now only one child can be in the XML.
To learn more about xpath expressions, I highly recommend
First I’ll create another entry in the T-table with a thing in the article tag which contains the attributes we’re interested in.
Which of the articles should be shown when you only have a single record?
Should it be the Keyboard, the Crane or the Crime Investigation Game? What is needed is a way to create multiple records from this single XML.
In my case, I copied the text (XML) from the source column in the source database and pasted it to a file.