add_key($key[, $primary = FALSE])

Table MetaData These functions let you fetch table information. List the Tables in Your Database

Query Basics Regular Queries To submit a query, use the query function:

get_compiled_delete([$table = ''[, $reset = TRUE]])

class CI_DB_query_builder reset_query()

count_all([$table = ''])

last_row([$type = 'object'])

db_select([$database = ''])

select_avg([$select = ''[, $alias = '']])

elapsed_time([$decimals = 6])