show database tables:
table1
table2
describe table:
col1	Nullable(String)					
col2	Nullable(Int64)					
col1	Nullable(Int64)					
col2	Nullable(String)					
describe table:
CREATE TABLE SQLite.table1\n(\n    `col1` Nullable(String),\n    `col2` Nullable(Int64)\n)\nENGINE = SQLite
CREATE TABLE SQLite.table2\n(\n    `col1` Nullable(Int64),\n    `col2` Nullable(String)\n)\nENGINE = SQLite
select *:
line1	1
line2	2
line3	3
1	text1
2	text2
3	text3
test insert:
line4	4
4	text4
after delete:
after detach:
line1	1
line2	2
line3	3
1	text1
2	text2
3	text3