implemetented insert cli

Author: veiled-coder

mysqlite/ReadMe.md

@@ -20,26 +20,56 @@ def queryUserInput
     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*)$/
-
     column_name=$3
     table_name="#{$5}.csv"
     where_conditions=$11
     table_name2="#{$7}.csv"
     join_on=$9 
-   
-    
 
     result=runSelectQuery(table_name,column_name).run
     if join_on
         result=runJoinQuery(join_on,table_name,table_name2,column_name).run
-
     end
     if where_conditions
         result=runSelectWhereQuery(where_conditions,table_name,column_name).run      
-    end#where
+    end
+
+when /^(?:INSERT|insert)\s+(?:INTO|into)\s+(\w+)(?:\s+\(([^)]+)\))?\s+(?:VALUES|values)\s+\(([^)]+)\)\s*;?\s*$/
+
+     table_name="#{$1}.csv"
+     table_column=$2
+     table_data=$3
+     hash_data_array=[]
+     split_data = CSV.parse(table_data).first
+     if table_column
+            split_column=table_column.split(",")
+            split_column.each_with_index do |column,i|
+            data_hash={}
+            data_hash[column] = split_data[i]
+            hash_data_array<<data_hash
+            end
+            
+     end
+ 
+    #  puts data_array.inspect
+    #  puts table_data_hashed.inspect
+    #  puts split_data.inspect
+    #  puts table_data_hashed.inspect
    
     
+request = MySqliteRequest.new
+request = request.insert(table_name)
+if table_column
+request = request.values(*hash_data_array)
+else
+    request = request.values(*split_data)
+end
+request.run
+
+#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'    
 
+    
 else
     puts 'Invalid query format. Please enter a valid query...e.g..SELECT * FROM database.csv'  
 end#when
@@ -87,7 +117,8 @@ def runJoinQuery(join_conditions,table_name,table_name2,column_name)
 end
 MySQLite.new
 
-# INSERT INTO students VALUES (John,'1991','1995','F-C','6-10','240',"June 24, 1968", 'Duke University')
+
+# 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)
 
 
 

mysqlite/my_sqlite_cli.rb

@@ -132,6 +132,7 @@ def run
 
 
       when 'insert' 
+     
       insert_row(@table_name,@dataToInsert)
 
 
@@ -235,17 +236,40 @@ def join_tables(tableB,tableA,tableB_file,tableB_column,tableA_column)
 end
 
 def insert_row(table_name,dataToInsert)
+  data_array=[]
+  values_array=[]
+  merged_hash={}
+insert_index=0
   CSV.open(table_name,"a+") do |csv|#test this in VsCode,it inserts data well without errors
     headers=csv.readline
-   dataToInsert.each do |data|
-     dataValues=headers.map do |header_name|
-       data[header_name]
+      dataToInsert.each do |data|
+          if data.class == String
+            values_array=dataToInsert
+            csv<<values_array
+          return
+        end
+      end
+
+    keys_array = dataToInsert.map(&:keys).flatten
+    
+    dataToInsert.each do |data_hash|
+      merged_hash.merge!(data_hash)
+    end
+    
+     headers.each_with_index do |header_name,i|
+      my_hash={}
+      my_hash[header_name]= merged_hash[header_name]
+      data_array<<my_hash
      end
-     csv<< dataValues
-    end  
-end 
+
+      values_array=data_array.map do |data|
+        data.values.first
+     end
+   
+      csv << values_array
 end
 
+end
 def process_row(row,result_hash, selected_hash_array,columns)
   if  columns[0]==='*'
       selected_hash_array<<row
@@ -304,11 +328,10 @@ def merge(left, right, &block)
   result
 end
 
-
-# request = MySqliteRequest.new
-# request = request.insert('nba_player_data.csv')
-# request = request.values('name' => 'Alaa Abdelnaby34', 'year_start' => '1991', 'year_end' => '1995', 'position' => 'F-C', 'height' => '6-10', 'weight' => '240', 'birth_date' => "June 24, 1968", 'college' => 'Duke University')
-# request.run
+request = MySqliteRequest.new
+request = request.insert('nba_player_data.csv')
+request = request.values('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')
+request.run
 
 
 # request = MySqliteRequest.new

mysqlite/my_sqlite_request.rb

@@ -4,4 +4,9 @@ Jimmy agabaje2,1983,1983,C,7-1,240,"December 20, 1953",Kent State University
 Bill Zopf,1971,1971,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
-Alaa Abdelnaby34,1991,1995,F-C,6-10,240,"June 24, 1968",Duke 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
+'aisha',1991,1995,,6-10,240,"June 24, 1968",Duke University
+
+Alaa Abdelnaby,1991,1995,F-C,6-10,240,"June 24, 1968",Duke University