Seems to me that there is no need to EVER deal with the pseudokeys. (select house_id from houses where address = new.address)
Our current workaround is to execute the ALTER TABLE statement and ignore any 'duplicate column name' errors, just like this Python example (but. Unfortunately, SQLite doesn't support an IF NOT EXISTS clause on ALTER TABLE. Of course, if the table has already been altered, we want to leave it alone. Select (select name_id from names where name = new.name), This can be done with ALTER TABLE ADD COLUMN. With that statement, it will insert the new record if it doesn't already exists on your table. Insert or ignore into houses (address) select new.address where new.address is not null Insert or ignore into names (name) values (new.name) Select raise(ABORT, 'Name cannot be NULL') where new.name is null Where (peasants.name_id is null or peasants.name_id = names.name_id)Īnd (peasants.house_id is null or peasants.house_id = houses.house_id) Ĭreate trigger ins_person instead of insert into persons create table namesĪddress text not null collate nocase unique It is actually not needed for anything at all. If it does then you can perform a regular UPDATE, otherwise perform your standard INSERT.
#Sqlight insert if doesnt already exist mac
alternatively you could, instead, select a count of the records into a variable to determine if the MAC already exists. It also does not really matter what some excrement-head thinks "after the fact" - they can either accept the answer "I don't know" (which by the way is an incorrect answer - the correct answer would be "that information was not recorded").Īnd going back to the post to which you replied, it only appears to the uneducated that there is a need to know the pseudokey for the row. You could use INSERT OR REPLACE statement. Playing with pseudokeys will not be helpful in this regard. Unless the inserted record contains a timestamp of when it was inserted, there is no way to tell when the record was inserted. Well, that is a design flaw (failure to store needed information) and has nothing whatsoever to do with the question asked.
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