How do I check if a table exists in sqlite3 c++ API? [duplicate]

Answer 1

Execute the following SQL:

select 1 from sqlite_master where type='table' and name='TABLE_NAME_TO_CHECK'

If you get a row then the table exists. If the result set is empty then it doesn't.

Answer 2

It looks like you're missing a right parenthesis in the SQL. It should be:

const char* sql = "CREATE TABLE IF NOT EXISTS blocks(id text primary_key,length numeric);";

Answer 3

Variation on another given answer:

select count(type) from sqlite_master where type='table' and name='TABLE_NAME_TO_CHECK';

Will return 0 if table does not exist, 1 if it does.