finished building all LiteDb features

Author: veiled-coder

mysqlite/my_sqlite_cli.rb

@@ -14,7 +14,7 @@ def queryUserInput
     result=''
 case query
 
-when 'exit'
+when 'quit'
     puts 'exiting sqlte cli'
     break
 when /^(\s*(SELECT|select)\s+([\w\s*,]+)\s+(FROM|from)\s+(\S+)\s*(?:(JOIN|join)\s+(\S+)\s+(on|ON)\s+(\S+))?(?:(WHERE|where)\s+(.*?))?\s*)$/
@@ -48,6 +48,11 @@ def queryUserInput
     where_conditions=$3
     request=runUpdateQuery(table_name,values,where_conditions).run
 
+when /^\s*(DELETE|delete)\s+(FROM|from)\s+(\w+)\s+(where|WHERE)\s+(.+)/
+
+    table_name="#{$3}.csv"
+     where_conditions=$5
+     request=runDeleteQuery(table_name,where_conditions,request).run
 
 
 else
@@ -141,6 +146,14 @@ def runUpdateQuery(table_name,values,where_conditions)
 request
 end
 
+def runDeleteQuery(table_name,where_conditions,request)
+request = MySqliteRequest.new
+request = request.delete
+request =request.from(table_name)
+request = processWhereConditions(where_conditions,request)
+request
+end
+
 def processWhereConditions(conditions,request)
     splitted_conditions=conditions.split(",")
 
@@ -154,36 +167,15 @@ def processWhereConditions(conditions,request)
     return request
 end
 MySQLite.new
-# UPDATE nba_player_data SET name = 'Bill Renamed', year_start = '2330' WHERE name = 'Bill Zopf',year_start='1971'
-
-# request = MySqliteRequest.new
-# request = request.update('nba_player_data.csv')
-# request = request.values('name' => 'Alaa Renamed2','year_start'=>'2023')
-# request = request.where('name', 'Alaa Renamed')
-# request = request.where('year_start', '1991')
-
-# the values were received as [{"name"=>"Alaa Renamed2", "year_start"=>"2023"}]
-
-# INSERT INTO nba_player_data (name,year_start,year_end,position,height,weight,birth_date,college) VALUES (Alaa Abdelnaby34,1991,1995,F-C,6-10,240,"June 24, 1968",Duke University)
-
-
-#as a hash data is sent this way 
-#'name' => 'Alaa Abdelnaby', 'year_start' => '1991', 'year_end' => '1995', 'position' => 'F-C', 'height' => '6-10', 'weight' => '240', 'birth_date' => "June 24, 1968", 'college' => 'Duke University'    
-
+#DELETE FROM  nba_player_data WHERE name = 'John'
 
+# UPDATE nba_player_data SET name = 'Bill Renamed', year_start = '2330' WHERE name = 'Bill Zopf',year_start='1971'
 
 
+# INSERT INTO nba_player_data (name,year_start,year_end,position,height,weight,college) VALUES (Alaa Abdelnaby34,1991,1995,F-C,6-10,240,Duke University)
+# INSERT INTO nba_player_data VALUES (Alaa Abdelnaby34,1991,1995,F-C,6-10,240,"June 24, 1968",Duke University)
 
 
-# SELECT name
-# FROM table1
-# JOIN table2 ON  table1.id=table2.id
-#SELECT name,email FROM students WHERE name='Matt Zunic'
 
-# request = MySqliteRequest.new
-# request = request.from('nba_player_data.csv')
-# request=request.select('*')
-# request=request.join('weight','nba_players.csv','weight2')
-# request.run
+#SELECT name,email FROM  nba_player_data WHERE name='Matt Zunic'
 
-# UPDATE students SET email = 'jane@janedoe.com', blog = 'https://blog.janedoe.com' WHERE name = 'Mila'

mysqlite/my_sqlite_request.rb

@@ -333,6 +333,17 @@ def merge(left, right, &block)
   result
 end
 
+
+
+# request = MySqliteRequest.new
+# request = request.delete
+# request =request.from('nba_player_data.csv')
+# request = request.where('name', 'Matt Zunic')
+# request=request.run
+
+
+
+
 # request = MySqliteRequest.new
 # request = request.update('nba_player_data.csv')
 # request = request.values('name' => 'Matt Renamed','year_start'=>'2017')

mysqlite/nba_player_data.csv

@@ -3,8 +3,6 @@ Ante Zizic,2018,2018,F-C,6-11,250,"January 4, 1997",
 Jimmy agabaje2,1983,1983,C,7-1,240,"December 20, 1953",Kent State University
 'Bill Renamed','2330',1971,G,6-1,170,"June 7, 1948",Duquesne University
 Bill Zopf,1972,1971,G,6-1,170,"June 7, 1948",Duquesne University
-Matt Zunic,2017,2018,C,7-1,265,"March 18, 1997",agege
-Matt Zunic,1949,1949,G-F,6-3,195,"December 19, 1919",George Washington University
 1991,1995,F-C,6-10,240,"June 24, 1968",Duke University,
 'aisha',1991,1995,,6-10,240,"June 24, 1968",Duke University
 'aisha',1991,,,6-10,240,"June 24, 1968",Duke University

mysqlite/students.csv

@@ -0,0 +1 @@
+