Update query: Difference between revisions
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**Double click on '''R_dc_treat'''TWICE | **Double click on '''R_dc_treat'''TWICE | ||
**You should see R_dc_treat in two columns in the FIELD box. | **You should see R_dc_treat in two columns in the FIELD box. | ||
**in the first column in the CRITERIA field type: "-1" | |||
**In the SECOND column, change to field name to the following: '''NewValue:''DC'' ''' | **In the SECOND column, change to field name to the following: '''NewValue:''DC'' ''' | ||
**Select DATASHEET VIEW. You will see in your first column what the value currently is and in the second column, what the value will be replaced with. | |||
**SAVE with a name of what this update query will do. | |||
**Go back to DESIGN VIEW. Make any changes if needed. | |||
==Part 2== | |||
You will now do the final steps to change this from a selection query to and Append query that will actually make the change you set up. | |||
**Go to TAB: Query Tools - Design | |||
**Select and SAVE as : Query Type - '''APPEND''' | |||
***you will notice that the symbol beside the query you named will be different. | |||
**you will also notice that the row that was labelled sort has not changed to: Update TO. | |||
==Final steps== | |||
in the first column in the Update to field, type in: "DC" | |||
*in the second column, first row, remove from the field NewValue: "DC" | |||
*Save again as a APPEND - query type. | |||
==Ready change data== | |||
Press the red ! run button. | |||
*query has done it job. | |||
Revision as of 15:38, 2015 January 9
This article explains how to write a bulk update query to a data field using Access in centralized front end (CFE).
The steps below use one example to demonstrate how to replace a specific item in a data field with another.
The example below:
- in the "R_dc_treat" field in "L_log", there are erroneous values of "-1" however, all of these values must be replace with the value "DC".
There are two parts in the process:
Part 1
Set up the selection query first
- this allows you to look if the update you're are planning is going to do what you need it to do before you actually proceed to part 2.
- Open CFE
- in the tool bar select the following:
- CREATE
- Select: Query Design. A list of tables will appear
- Select: L_Log
- Close the table box
- Scroll down and find R_dc_treat.
- Double click on R_dc_treatTWICE
- You should see R_dc_treat in two columns in the FIELD box.
- in the first column in the CRITERIA field type: "-1"
- In the SECOND column, change to field name to the following: NewValue:DC
- Select DATASHEET VIEW. You will see in your first column what the value currently is and in the second column, what the value will be replaced with.
- SAVE with a name of what this update query will do.
- Go back to DESIGN VIEW. Make any changes if needed.
Part 2
You will now do the final steps to change this from a selection query to and Append query that will actually make the change you set up.
- Go to TAB: Query Tools - Design
- Select and SAVE as : Query Type - APPEND
- you will notice that the symbol beside the query you named will be different.
- you will also notice that the row that was labelled sort has not changed to: Update TO.
Final steps
in the first column in the Update to field, type in: "DC"
- in the second column, first row, remove from the field NewValue: "DC"
- Save again as a APPEND - query type.
Ready change data
Press the red ! run button.
- query has done it job.