1
vote
2answers
20 views

getting one day timestamp in mysql

Please consider the following stored procedure I have: ORIGINAL Stored Procedure: -- -------------------------------------------------------------------------------- -- Routine DDL -- Note: comments ...
0
votes
0answers
14 views

set error message on out variable in mysql stored procedure

I have a stored procedure: fill_DATA (serial varchar(20), OUT oError) I am doing an Insert operation here. so what I want is to SET value of oError for any error message in case the query fails to ...
-1
votes
1answer
30 views

prepare stmt is not working

set @sqlt = concat("select", @rowname_date," from syslog_data.syslogs_index_1 "); prepare stmt from @sqlt; execute stmt; deallocate prepare stmt; gives me a eeror 1064 in the prepare statement? Any ...
0
votes
0answers
31 views

how to use information table's result in a select statement

SELECT COLUMN_NAME into columnname_date FROM `INFORMATION_SCHEMA`.`COLUMNS` WHERE `TABLE_SCHEMA`='syslog_data' AND `TABLE_NAME`='syslogs_index_1' AND ordinal_position = forder_date+2; When I ...
7
votes
3answers
947 views

Store a formula in a table and use the formula in a function

I have a PostgreSQL 9.1 database where part of it handles agent commissions. Each agent has his/her own formula of calculation how much commission they get. I have a function to generate the amount of ...
0
votes
2answers
130 views

looping through a table type variable

I have a function that has one parameter of a table type, i want to loop through all the fields and return the column that has a null or empty value. CREATE OR REPLACE FUNCTION ...
2
votes
2answers
236 views

Proper use of NULL, and utilizing CHECK constraints for business logic vs stored procedures

This question regards the proper use of NULL and utilizing CHECK constraints for business logic vs stored procedures. I have the following tables setup. I normalized the tables to avoid using ...
2
votes
2answers
2k views

Primary Key on a View

While answering this question How to add a Primary Key on a Oracle view? A lot of questions popped in my mind. 1. Is it advisable to have primary key in a view. 2. Why anybody be intrested in ...
1
vote
1answer
274 views

What's the best paradigm or design pattern for exception handling in a mission-critical DB driven web application?

I want to design a bullet-proof, fault tolerant, DB driven web application and was wondering on how to architect it. the system will have a asp.net UI, web services middle tier and SQL2005 back end. ...
4
votes
4answers
2k views

Examples of SQL transaction procedures for sales tracking or a financial database

I am making a database for an accounting/sales type system similar to a car sales database and would like to make some transactions for the following real world actions: salesman creates new product ...