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After creating a connection, you can use existing objects of Oracle SQL Developer or can create new also. Now let us see how to browse already existing objects. Browsing Objects in Oracle SQL Developer 1. Expand the newly added connection. You can use any object like tables, views, indexes,...
Indexes. They're one of the most powerful and misunderstood aspects of SQL performance. In this post we'll look at the purpose of an index, how to create and choose choose your index type. Then finish with a discussion of how to decide what to index and
Function ConvertBase34To10(Base34Number As String) As Long Dim X As Long, Total As Long, Digit As String For X = Len(Base34Number) To 1 Step -1 Digit = UCase(Mid(Base34Number, X, 1)) ConvertBase34To10 = ConvertBase34To10 + IIf(IsNumeric(Digit), Digit, Asc(Digit) -...
CREATE SEQUENCE ht_emp_seq start with 2 / CREATE OR REPLACE TRIGGER bi_ht_emp BEFORE INSERT ON ht_emp FOR EACH ROW BEGIN SELECT ht_emp_seq.nextval INTO :new.emp_id FROM DUAL; :new.rec_create_date := SYSDATE; END; / CREATE OR REPLACE TRIGGER bu_ht_emp ...
How to migrate MariaDB sequences ? MariaDB supports sequences which are not available in MySQL 8.0. We do not see many MariaDB users using this features. Let’s check if our source server is using sequences because we will have to manage these tables for the migration: ...
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Here,we’re combining the prepared statement approach and a whitelist used to sanitize theorderByargument. The final result is a safe string with the final SQL statement. In this simple example, we’re using a static set, but we could also have used database metadata functions to create it...
This tutorial describes how to create and deploy an application that tracks the assignment, status, and progress of issues related to a project. This tutorial walks you through all the steps necessary to create a robust issue tracking application. Before following the steps outlined in this chapter...
Yes sorry, the lines are being sent to the php server in order but the replies are being returned in random, depending on the time it takes to return. As per the last part of the post, the Successfully added Part ### is the actual line number being returned. ...