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Chapter 6 - Apex DML and Database Methods >

Delete | Apex DML Standalone Statement

Delete | Apex DML Standalone Statement

Ex: Delete Duplicate Contacts

List<Contact> conList = [select firstname, lastname from contact];

Map<String, ID> mMap = new Map<String, ID>();

for(Contact c: conList)




List<Contact> uniqList = new List<Contact>();

List<Contact> delList = new List<Contact>();

Set<String> sSet = mMap.keySet();

Set<ID> uniqSet = new Set<ID>;

for(String s: sSet)




for(Contact c1: conList)







delete delList;

Note: Use isDeleted=true & ALL ROWS keyword to get the deleted records from the recycle bin using SOQL.

Note: ALL ROWS keyword cannot be used in the query editor but can be used in the apex class or function while querying record in [].

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