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日期:2025-04-29
Example - Using EXISTS Clause You can also perform more complicated updates in Oracle. You may wish to ......
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日期:2025-04-22
The SQL standard for DML UPDATE statements can be complex and convoluted and there are best practices ......
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UPDATE ACCOUNT SET ACCOUNT_STATUS = CASE WHEN ACCOUNT_STATUS = '004460721' THEN 5 WHEN ACCOUNT_STATUS ......
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日期:2025-04-28
This Oracle tutorial explains how to use the Oracle/PLSQL CASE statement with syntax and examples. The Oracle/PLSQL CASE statement has the functionality of an IF-THEN-ELSE statement. Starting in Oracle 9i, you can use the CASE statement within a SQL ......
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日期:2025-04-27
This article steps administrators through updating an Oracle Solaris 11 system with software packages that are provided with an active Oracle support agreement, covering some of the basics that administrators should know to ensure the update goes successf...
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CASE WHEN statement with variable : Case « PL SQL « Oracle PL / SQL ... SQL> SQL> SQL> CREATE TABLE lecturer ( 2 id NUMBER(5) PRIMARY KEY, 3 first_name VARCHAR2(20), 4 last_name VARCHAR2(20), 5 major VARCHAR2 ......
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DECODE EXAMPLE: SELECT supplier_code, decode(supplier_id, 10000, 'IBM', 10001, 'Microsoft', 10002, 'Hewlett Packard', 'Gateway') supplier_name FROM suppliers; The DECODE() function accepts a field name to evaluate, then allows you to specify what result ....
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日期:2025-04-24
Rename case when column : Case Query « Select Query « Oracle PL / SQL ... SQL> SQL> create table emp 2 ( empno NUMBER(4) constraint E_PK primary key 3 , ename VARCHAR2(8) 4 , init VARCHAR2(5) 5 , job VARCHAR2(8) 6 ......