Is there a way to add a row only if it doesn't already exist?
136992
"Insert if not exists" statement in SQLite
129160
How to create an array if an array does not exist yet?
77779
Can't Remove Duplicate Rows
18879
How to set a default row for a query that returns no rows?
67433
Insert data only if record does not exist
13261
Return row only if value doesn't exist
100993
ADO.NET DataRow - check for column existence
67494
Simulate CREATE DATABASE IF NOT EXISTS for PostgreSQL?
49328
How to automatically insert a blank row after a group of data
36682
How to add a new row to datagridview programmatically
154568
Optimal way to ignore duplicate inserts?
20113
How to Select records that don't exist in Sql Server
102911
Select rows which are not present in other table
135734
How to add column if not exists on PostgreSQL?
155224
Selecting Non-existent Data With MySQL
89878
Only add to a dict if a condition is met
149756
Increment Record based on field