oracle clob functions

From csdn ======================================================== In Oracle, four lobs types are available: blob, clob, bfile, and nclob. The following is a brief introduction to the lob data type. L BLOB: Binary lob, Which is binary data. It can

Some people often talk about reading and writing BLOB fields. I have been writing something recently. I have made some comparisons on the data types and functions of common databases, and I have also written a lot of tests.Code, The following are

Clob is saved as a local xml file. After modification, it is uploaded. clobxml I wrote a small program with my friends over the past two days. The functions are as follows: First, save the database clob as a local xml file, modify the xml file, and

Clob and BLOB fields in Oracle have been developed to meet the requirements of storing oversized content, but in some simple uses it often brings trouble. A pointer is stored in the CLOB and cannot be taken directly to the actual value. and the Text

This article will introduce some interesting functions that trisi often uses in daily life, or which are rarely used. There are two types of introduction: Famous functions-frequently used functions Non-famous functions-although rarely used, they are

Oracle SQL clob queries duplicate data. Multi-field COMPARE function data clob fields cannot be group by or distinct during query. Therefore, it is very troublesome to find duplicate data based on clob, most people on the Internet propose to use

The general step to add a non-empty column is to add a column that can be empty first, and then update that column to a value (such as 0) and finally modify the typeBut it's not going to meet the type CLOB. In modify this step times wrong: ora-22296:

This article will introduce some of the functions that are often used in everyday life, or that are very interesting, though they are rarely used. It is divided into two kinds of introductions, namely: Famous letters-functions that are often

This article is not ready to introduce all of the Oracle functions, in the current situation, I do not have this time, need to learn too much, to spend most of the time on learning to use the technical aspects:), so if you are ready to learn all the

If you have been in contact with MySQL, you must be familiar with MySQL text and Blob. in MySQL, you can directly operate on text and blob. However, in Oracle, it regards lob as a special field and cannot perform operations directly-for example, it