ORACLE

Table Blob to Oracle Directory

Posted by - Vikas Pandey Jun 28, 2020 ORACLE PLSQL SQL Directory

How to save table images to oracle directory? Files from table to Oracle directory 1DECLARE 2 l_file UTL_FILE.file_type; 3 l_buffer RAW (32767); 4 l_amount BINARY_INTEGER := 32767; 5 l_position INTEGER := 1; 6 l_blob_length INTEGER; 7BEGIN 8 FOR l_cnt IN (SELECT filename, product_image FROM demo_product_info) 9 LOOP 10 …

Oracle NULLIF() Function

Posted by - Vikas Pandey Jun 9, 2020 ORACLE PLSQL SQL NULLIF

Oracle NULLIF() Function: The Oracle NULLIF() function accepts only two arguments. If the both arguments are equal it returns a null value. In case the arguments are not equal, the NULLIF() function returns the first argument and if any arguments will null then function return an error. Syntax of the NULLIF() …

Oracle NVL2 Function

Posted by - Vikas Pandey Jun 4, 2020 ORACLE PLSQL SQL NVL2

Oracle NVL2 Function: NVL2() function is an extend version of the NVL() function with different options based on whether a NULL value exists. Oracle NVL2() function allow three parameters. If the first parameter is not null, then it returns the second parameter. In case the second parameter is null, then it returns the …

Oracle Decode Function

Posted by - Vikas Pandey Jun 3, 2020 ORACLE PLSQL Function SQL

Oracle Decode Function: Oracle DECODE() function compares the first argument with the second argument. IF they are equal, the function returns the third argument otherwise return default value. The Oracle/PLSQL DECODE function has the functionality of an IF-THEN-ELSE statement: 1SELECT DECODE (1, 1, 'ONE', …

Oracle NVL Function

Posted by - Vikas Pandey Jun 3, 2020 ORACLE PLSQL SQL NVL

Oracle NVL Function: The NVL function allow you to replace null values with a default value. If the first parameter is null, the function returns the second parameter. If the first parameter have some value then always return first value. Note := NVL function replaces null value with same type data. Syntax of the …

Oracle NULL-Related Functions

Posted by - Vikas Pandey Jun 3, 2020 ORACLE PLSQL SQL

Oracle NULL-Related Functions. There are different type of null related function in oracle. NVL 1NVL function will check whether the first input parameter is null, if its null value, 2 it returns the second parameter value. DECODE 1The Oracle/PLSQL DECODE function has the functionality of an IF-THEN-ELSE statement. …

NULL in ORACLE

Posted by - Ashish Sahay May 12, 2020 PLSQL SQL ORACLE NULL

NULL in Oracle NULL = NULL ? 1SELECT CASE 2 WHEN NULL = NULL THEN 'NULL Equals to NULL' 3 ELSE 'NULL is NOT Equals to NULL' 4 END NULL_ 5 FROM DUAL; NULL_ NULL is NOT Equals to NULL COUNT with NULLs 1WITH tab 2 AS (SELECT 10 a FROM DUAL 3 UNION ALL 4 SELECT NULL a FROM DUAL 5 UNION ALL 6 …

Cursors in PL/SQL

Posted by - Ashish Sahay Apr 30, 2020 ORACLE PLSQL SQL

What is cursor: Pointer to the memory location where the information about sql stmt or DML statement got executed. There are two types of cursors − Implicit Cursor:= Any Select Stmt Or Any SQL Stmt Executed By Oracle Is Through Cursor And User Don’t Have Controlled On Implicit Cursor But Use Can Get Information …

Reading File From Oracle Directory

Posted by - Ashish Sahay Mar 29, 2020 ORACLE PLSQL SQL

How to read Files from Oracle Directory using PL/SQL? File Structure ACCOUNTING RESEARCH SALES OPERATIONS 3 Records 5 Records 6 Records 0 Records How to generate files into Oracle Directory? 1 2DECLARE 3 l_file UTL_FILE.file_type; 4 l_read VARCHAR2 (32767); 5BEGIN 6 l_file := UTL_FILE.fopen ('MY_DIR', …

Writing File to Oracle Directory

Posted by - Vikas Pandey Mar 27, 2020 UTL_FILE ORACLE PLSQL SQL

How to write file to ORACLE Directory using PL/SQL? Creating directory 1GRANT CREATE ANY DIRECTORY TO apex_19_2; 2CREATE OR REPLACE DIRECTORY my_dir AS 'C:\App\MY_DIR'; Writing File To Directory 1DECLARE 2 l_file UTL_FILE.file_type; 3BEGIN 4 l_file := UTL_FILE.fopen ('MY_DIR', …