alter table oracle
ALTER TABLE tablename MODIFY columnname varchar2(100)alter table oracle
ALTER TABLE tablename MODIFY columnname varchar2(100)pls sql update
UPDATE table
SET column1 = expression1,
column2 = expression2,
...
column_n = expression_n
[WHERE conditions];update table syntax in oracle
{
UPDATE table-Name [[AS] correlation-Name]
SET column-Name = Value
[ , column-Name = Value} ]*
[WHERE clause] |
UPDATE table-Name
SET column-Name = Value
[ , column-Name = Value ]*
WHERE CURRENT OF
}oracle update with
UPDATE mytable t -- Update using WITH statement
SET value3 = (
WITH comp AS (
SELECT id, value1
FROM mytable t
WHERE value2 > 10
)
SELECT c.value1
FROM comp c
WHERE c.id = t.id
);alter table oracle
ALTER TABLE table_name
ADD CONSTRAINT constraint_name
FOREIGN KEY (column1, column2, ... column_n)
REFERENCES parent_table (column1, column2, ... column_n);Copyright © 2021 Codeinu
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