Changes the database context, all operations after this apply to that context
USE main
┌┤changed_db ├┐
│main │
└[changed_db ]┘
creates a table in a database. If no context is used, the default context of 'main' is used.
USE test;
create table test('id','first_name','last_name','email','gender','ip_address') file='/test/MOCK_DATA.csv'
┌┤create table ├┐
│1 │
└[create table ]┘removes a table from the database. It does not alter the data_file or the table configuration file.
USE test;
drop table test
┌┤dropped ├┐
│1 │
└[dropped ]┘list all tables in the system. ? maybe by database. But I think its all of them. #TODO FIX
show tables
┌┤database ├┬┤table ├┐
│main │test │
└[database ]┴[table ]┘list all of the columns of a given table
USE test;
show columns from test
┌┤table ├┬┤column ├┐
│test │id │
│test │first_name │
│test │last_name │
│test │email │
│test │gender │
│test │ip_address │
└[table ]┴[column ]┘- bring data back from the database
- nested querys are not supported
- "as like, not, is, or, and, where, from, order by,limit" are supported
- like '%x%' or like '%x' or like 'x%'
- operators are supported. Though casting isnt setup yet
- =, >, >=, <, <=, like, not, is
- selecting from columns in a table requires a from target
- selecting from functions does not require a table, they are calculated
- if a function is present and no table data is present, no data will be returned
- if a function is present and no columns are present, a single row will be returned
USE test;
SELECT database()
SELECT * FROM TEST LIMIT 10
SELECT * from test limit 5,10
SELECT id,first_name from test order by id limit 15,10
SELECT *,id AS ID2,database() AS db_name FROM test WHERE id >990 AND gender LIKE 'Ma%' or id=1 ORDER BY gender,id desc LIMIT 0,1000
SELECT DISTINCT *,id AS ID2,database() AS db_name FROM test WHERE id >990 AND gender LIKE 'Ma%' or id=1 ORDER BY gender,id desc LIMIT 0,1000
┌┤id ├┬┤first_nam├┬┤last_name├┬┤email ├┬┤gender ├┬┤ip_addres├┬┤ID2 ├┬┤db_name ├┐
│999 │Karlik │Terrett │kterrettrq@│Male │55.93.204.4│999 │main │
│998 │Calvin │Hedger │chedgerrp@g│Male │171.110.129│998 │main │
│995 │Peter │Oliff │poliffrm@si│Male │104.255.33.│995 │main │
│994 │Valentijn │Dentith │vdentithrl@│Male │171.49.46.7│994 │main │
│992 │Bernarr │Playle │bplaylerj@s│Male │201.5.16.21│992 │main │
│991 │Waite │Pettipher │wpettipherr│Male │236.2.105.1│991 │main │
│1 │Say │Murgatroyd │smurgatroyd│Male │35.226.127.│1 │main │
└[id ]┴[first_nam]┴[last_name]┴[email ]┴[gender ]┴[ip_addres]┴[ID2 ]┴[db_name ]┘
update a row in the database based on a standard where clause. If no data is matched in the where, nothing is updated
USE test;
UPDATE 'test' SET first_name='TEST_UPDATE' where id='1001' or id='1001'
┌┤updated ├┐
│0 │
└[updated ]┘insert a row of data into the database, columns can be orderd
USE test;
INSERT INTO test (id,first_name,last_name,email,gender,ip_address) values (10001,test_name1,'test_lname','sam@bob.com','male','0.0.0.0');
INSERT INTO test (ip_address,id,first_name,last_name,email,gender) values ('0.0.0.0',10002,test_name1,'test_lname','sam@bob.com','male');
INSERT INTO test (id,first_name,last_name,email,gender,ip_address) values (10003,test_name1,'test_lname','sam@bob.com','male','0.0.0.0');
┌┤inserted ├┐
│1 │
└[inserted ]┘remove a row from the database based on matching criteria
USE test;
DELETE FROM test where email like 'sam%'
┌┤deleted ├┐
│0 │
└[deleted ]┘-view table configuration
use test;
describe table test
┌┤option ├┬┤value ├┐
│active │True │
│table_name │test │
│database │main │
│data_file │ddb/test/MOCK_DATA.csv │
│type │Temp │
│config_file │ │
│data_starts_on │0 │
│field_delimiter │, │
│comments_visible │False │
│errors_visible │True │
│whitespace_visible │False │
└[option ]┴[value ]┘Change the properties of a table
update table test whitespace=true
┌┤update table ├┐
│1 │
└[update table ]┘