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Delete record(s) using a variable with Android SQLite

Posted on 2013-11-28
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Last Modified: 2013-11-29
I can delete row(s) using known TEXT like 'Bill'
db.delete("mytable", "name = 'Bill'", null); ... this works

I want to delete row(s) from a table using a VARIABLE ... what is the syntax ?
The following 3 attempts do not work :
String FirstName = "Bill";
db.delete("mytable", "name = FirstName", null);
db.delete("mytable", "name = String.valueOf(FirstName)", null);
db.delete("mytable", "name=?", FirstName);

Is there a SIMPLE solution ?
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Question by:Danimal-K
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3 Comments
 
LVL 11

Accepted Solution

by:
Manish earned 2000 total points
ID: 39684716
Try this
String firstName = "Bill";
String columnName="name";

db.delete("mytable", columnName+"="+firstName, null);
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LVL 11

Expert Comment

by:Manish
ID: 39684725
or check this
db.delete("mytable", columnName+"=? ", new String[] { firstName });
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Author Comment

by:Danimal-K
ID: 39685492
String firstName = "Bill";
String columnName="name";
db.delete("mytable", columnName+"="+firstName, null);
 
firstName needs to be in single quotes so I tweeked the where statement

db.delete("mytable", columnName+"="+'"+firstName+"', null);

Now it works !!!!
Thank you so much Karanw
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