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. …

Coalesce in oracle

Posted by - Ashish Sahay May 21, 2020 Coalesce PLSQL SQL PLUGINS TEMPLATES

Coalesce in ORACLE COALESCE return first not null value out all the parameter passed into this function. NOTE: All the parameters have be same datatype 1DROP TABLE coalesce_func_test; 2 3CREATE TABLE coalesce_func_test 4( 5 id NUMBER, 6 col1 VARCHAR2 (10), 7 col2 VARCHAR2 (10), 8 col3 VARCHAR2 (10), 9 col4 NUMBER 10); …

Coalesce in oracle

Posted by - Ashish Sahay May 21, 2020 Coalesce PLSQL SQL PLUGINS TEMPLATES

Coalesce in ORACLE COALESCE return first not null value out all the parameter passed into this function. NOTE: All the parameters have be same datatype 1DROP TABLE coalesce_func_test; 2 3CREATE TABLE coalesce_func_test 4( 5 id NUMBER, 6 col1 VARCHAR2 (10), 7 col2 VARCHAR2 (10), 8 col3 VARCHAR2 (10), 9 col4 NUMBER 10); …

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 …

Pipelined Functions in Oracle

Posted by - Ashish Sahay Apr 12, 2020 PLSQL SQL PIPELINE

How to create Pipelined Functions in Oracle? Pipeline functions are used to return data in tabular format. It returns the data in the nested table type. Pipeline functions are useful to dump data derived from the complex queries. Create the types 1CREATE TYPE g_emp_row AS OBJECT 2( 3 empno NUMBER (4), 4 ename …