The PL/SQL language is tightly integrated with SQL.
You do not have to translate between SQL and PL/SQL datatypes; a variable in PL/SQL.
Often this problem is solved with a select statement and then an IF statement, eg: declare v_exists varchar2(1) := ' F'; begin begin select ' T' into v_exists from employee where employee_id := i_employee_id; exception when no_data_found then null; end; if v_exists = ' T' then update employee set ... When coding a procedure, you should try and get an idea of how the procedure will be used.
where employee_id = i_employee_id else insert ( ... In this case, the question to ask whether the procedure will mostly be used to update existing employee records, or insert new ones.
For Example: The price of a product changes constantly.
It is important to maintain the history of the prices of the products.
These information links are available to the TIBCO Spotfire users to retrieve or manipulate data.
If the procedure is expected to mostly insert new records and rarely update existing ones, then use the following pattern (assuming there are unique constraints on the database to prevent duplicate employees being created): This code relies of the database to tell you the record already exists based on the integrity constraints on the table, which is much more efficient and less error prone that attempting to do it yourself.If the more likely case is that existing records will be updated, the code below is better: begin update employees set ....where employee_id = i_employee_id; if sql%rowcount = 0 then -- no rows were updated, so the record does not exist insert into employees ( ... ); end if; end; When any SQL statement is executed in PLSQL, the SQL%ROWCOUNT variable will contain the number of rows affected (in this case updated) by the most recent query. The MERGE statement takes a list of records which are usually in a staging table, and adds them to a master table.Then you configure a complete information link with one or more combinations of procedures and columns from other tables.that is older than the same X minutes and delete it (or run an ASP page from the Web server instead)? When you sign in to comment, IBM will provide your email, first name and last name to DISQUS.