Delete From Pl/Sql Table
Delete From Pl/Sql Table. Parameters or arguments schema_name the name of the schema that owns the table. Delete(n) and delete(m, n) let you prune a pl/sql table.
For example, where column_name = value. Notice the where clause in the delete statement. Begin delete product_category where upper(category_description) like '%book%'
The Where Clause Is Important Here.
Usinng unrecoverable option as we would loose rows that are inserted after creating a temp table from the existing one. The conditions that must be met for the records to be deleted. For example, where column_name = value.
But It Does Not Free The Space Containing By The Table.
If you omit the where clause, the statement will remove all rows in the table. Select @query = ' delete from '+ quotename(@tablename) +' where '+ @empid +' not like %'+cast(employeeid as varchar(3)) +'%' from some_table; There are two forms of delete operations based on what is specified in the where clause:
The Delete Statement Only Deletes The Rows From The Table Based On The Condition Defined By Where Clause Or Delete All The Rows From The Table When Condition Is Not Specified.
In this example, we are going to see how to perform dml operations in pl/sql. The sql statement that removes all the records in the table and also destroys the table at the same time. You could use pl/sql to return the rows you delete into a collection that could then be inserted into your other table.
B) Delete Duplicate Rows Using An Intermediate Table.
Since ours is a continuouslu updated table we could not follow approach 1 , i.e. The syntax for the delete statement in oracle/plsql is: Syntax the syntax for the delete from statement is as follows:
Be Careful When Deleting Records In A Table!
Parameters or arguments table the table that you wish to delete records from. I am working on deleting rows from this table (my.table_job_status) that are old and with a lot of lines. Alter table drop column oracle.
Post a Comment for "Delete From Pl/Sql Table"