Delete Data In Multiple Table With The Same Id In MySQL?

Feb 11, 2012

This is the Query:

DELETE FROM patientpersonal,patientmedical,patientdental
WHERE patientpersonal.'" & dpatientid & "' = patientmedical.'" &
dpatientid & "' AND patientpersonal.'" & dpatientid & "' = patientdental.'"

[code].....

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I have a data logging application that stores data in a table in a MySQL database. Data with a TimeStamp is logged into the table anytime the data from the sensor changes. This means that there maybe 2 seconds between data points or there maybe 20 seconds between points depending on how the data is changing.

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Imports MySql.Data.MySqlClient
Imports System.Data.Sql
Imports System
Imports System.Data

[code]....

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vb.net
Dim conn As MySqlConnection
'connect to DB

[Code].....

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Im trying to fumble my way through selecting data from a mysql table and populating it to a combo box. I feel Im almost there, could someone look over my code and see whats going wrong?

Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
Dim con As New MySqlConnection

[Code].....

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I'm adding records to the table which goes fine until... I want to delete a row. The first time it said that the row was "read only" now I'm getting:

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I wish to delete the contains of multiple tables, and I also wish to append the contain of table1 to table2 (both table1 and table 2 have the same exact fields and type).For the Delete, I have tried the following code and I have undefined errors for SqlCommand and CommandType.This is my code for deleting the contains of a table:

Dim queryString
As
String =
"DELETE FROM Buffer Table 1"[code].....

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[Code]...

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How to store TIME types to Variables or Control;

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i'm developing a clinic management system, while doctor may give few medicines to patient,therefore i hope inside my database,the data will look like

[Code].....

this is my 2 tables, i hope when storing data ,the recordID will not increase based on how many ItemID inserted.

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This is my code for deleting:

Private Sub tranc()
Try
Dim dbconn As OleDbConnection
Dim dbcom As New OleDbCommand
dbconn = New OleDbConnection(cnnstring())

[CODE]...

I used access database on it. when i run my prog. i got this error "Invalid SQL statement; expected 'delete','insert.... or 'update'.

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'Check for appraisal period-----------------------------------------------------------------------
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[CODE]................

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On Error Goto LblErr
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[Code]....

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[Code].....

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I am combining data from multiple tables into one table for a presentation software. I am doing a select statement and running a loop. Inside that loop I have multiple selects and I build a datatable an enter the data into the main table. There is a ton of records and it takes forever.

'Requisition Demands
InsertStr =
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[code].....

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