PostgreSQL Clob datatype
The clob data type is unsupported in Postgres. However, it can be easily defined as a synonym to the text type: create domain clob as text;
clob
Overcomplicated oracle jdbc BLOB handling
The update approach you mention in the first case can be rewritten using pure JDBC code and thus reduce your dependency on Oracle-specific classes. This could be helpful if your app needs to be database agnostic. public static void updateBlobColumn(Connection con, String table, String blobColumn, byte[] inputBytes, String idColumn, Long id) throws SQLException { PreparedStatement … Read more
Search for a particular string in Oracle clob column
Use dbms_lob.instr and dbms_lob.substr, just like regular InStr and SubstStr functions. Look at simple example: SQL> create table t_clob( 2 id number, 3 cl clob 4 ); Tabela zosta│a utworzona. SQL> insert into t_clob values ( 1, ‘ xxxx abcd xyz qwerty 354657 [] ‘ ); 1 wiersz zosta│ utworzony. SQL> declare 2 i number; … Read more
How to get size in bytes of a CLOB column in Oracle?
After some thinking i came up with this solution: LENGTHB(TO_CHAR(SUBSTR(<CLOB-Column>,1,4000))) SUBSTR returns only the first 4000 characters (max string size) TO_CHAR converts from CLOB to VARCHAR2 LENGTHB returns the length in Bytes used by the string.
Error : ORA-01704: string literal too long
What are you using when operate with CLOB? In all events you can do it with PL/SQL DECLARE str varchar2(32767); BEGIN str := ‘Very-very-…-very-very-very-very-very-very long string value’; update t1 set col1 = str; END; / Proof link on SQLFiddle
Most efficient solution for reading CLOB to String, and String to CLOB in Java?
Ok I will suppose a general use, first you have to download apache commons, there you will find an utility class named IOUtils which has a method named copy(); Now the solution is: get the input stream of your CLOB object using getAsciiStream() and pass it to the copy() method. InputStream in = clobObject.getAsciiStream(); StringWriter … Read more
How to query a CLOB column in Oracle
This works select DBMS_LOB.substr(myColumn, 3000) from myTable
ORA-00932: inconsistent datatypes: expected – got CLOB
You can’t put a CLOB in the WHERE clause. From the documentation: Large objects (LOBs) are not supported in comparison conditions. However, you can use PL/SQL programs for comparisons on CLOB data. If your values are always less than 4k, you can use: UPDATE IMS_TEST SET TEST_Category = ‘just testing’ WHERE to_char(TEST_SCRIPT) = ‘something’ AND … Read more
Disabling contextual LOB creation as createClob() method threw error
Disable this warning by adding property below. For Spring application: spring.jpa.properties.hibernate.temp.use_jdbc_metadata_defaults=false Normal JPA: hibernate.temp.use_jdbc_metadata_defaults=false
Difference between CLOB and BLOB from DB2 and Oracle Perspective?
BLOB is for binary data (videos, images, documents, other) CLOB is for large text data (text) Maximum size on MySQL 2GB Maximum size on Oracle 128TB