Generate pairs of date (start and end)

pythonProject/main.py

@@ -10,7 +10,7 @@ def main():
     sql_tables = SQLParser.parse_sql_file("schema.sql")
     inserts = []
     for table in sql_tables:
-        for i in range(0, 100):
+        for i in range(0, 5):
             inserts.append(SQLGenerator.generate_random_insert(table))
 
     with open("inserts.sql", "w") as file:

pythonProject/schema.sql

@@ -2,7 +2,8 @@ CREATE TABLE `test` (
   `id` bigint(20) NOT NULL,
   `test_value` int(11) NOT NULL,
   `test_string` varchar(255) DEFAULT NULL,
-  `local_date` date DEFAULT NULL,
+  `starting_date` date DEFAULT NULL,
+  `ending_date` date DEFAULT NULL,
   PRIMARY KEY (`id`)
 ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_general_ci
 

pythonProject/sqlgenerator/ColumnValue.py

@@ -1,5 +1,7 @@
 from enum import Enum
 
+from sqlparse.SQLColumn import SQLColumn
+
 
 class ValueType(Enum):
     INT = 0,
@@ -7,6 +9,7 @@ class ValueType(Enum):
 
 
 class ColumnValue:
-    def __init__(self, value, value_type: ValueType):
+    def __init__(self, value, value_type: ValueType, sql_column: SQLColumn):
         self.value = value
-        self.valueType = value_type
+        self.valueType = value_type
+        self.sqlColumn = sql_column

pythonProject/sqlgenerator/SQLGenerator.py

@@ -1,6 +1,7 @@
 import datetime
 import random
 import time
+from typing import List
 
 from sqlgenerator.ColumnValue import ValueType, ColumnValue
 from sqlparse.SQLColumn import SQLColumn, SQLColumnType
@@ -20,7 +21,7 @@ max_date = datetime.date(2024, 12, 31)
 def generate_random_insert(sql_table: SQLTable):
     columnValues = []
     for column in sql_table.columns:
-        columnValues.append(generate_random_column(column))
+        columnValues.append(generate_random_column(column, columnValues))
 
     sql_insert_command = "INSERT INTO " + sql_table.table_name + " VALUES (${i});"
     for columnValue in columnValues:
@@ -33,17 +34,31 @@ def generate_random_insert(sql_table: SQLTable):
     return sql_insert_command
 
 
-def generate_random_column(sql_column: SQLColumn):
+def generate_random_column(sql_column: SQLColumn, generated_values: List[ColumnValue]):
     if sql_column.columnType == SQLColumnType.BIGINT:
-        return ColumnValue(random.randint(min_bigint, max_bigint), ValueType.INT)
+        return ColumnValue(random.randint(min_bigint, max_bigint), ValueType.INT, sql_column)
     elif sql_column.columnType == SQLColumnType.INT:
-        return ColumnValue(random.randint(min_int, max_int), ValueType.INT)
+        return ColumnValue(random.randint(min_int, max_int), ValueType.INT, sql_column)
     elif sql_column.columnType == SQLColumnType.VARCHAR:
         text_legnth = random.randint(1, 255)
         lorem_text = lorem.sentence()
-        return ColumnValue(lorem_text[:text_legnth], ValueType.STRING)
+        return ColumnValue(lorem_text[:text_legnth], ValueType.STRING, sql_column)
     elif sql_column.columnType == SQLColumnType.DATE:
-        delta = max_date - min_date
-        random_days = random.randrange(delta.days + 1)
-        random_date = min_date + datetime.timedelta(days=random_days)
-        return ColumnValue(str(random_date), ValueType.STRING)
+        if "end" in sql_column.columnName or "max" in sql_column.columnName:
+            for value in generated_values:
+                if "start" in value.sqlColumn.columnName or "min" in sql_column.columnName:
+                    startingDate = datetime.datetime.strptime(value.value, "%Y-%m-%d").date()
+                    return generate_random_date(startingDate, max_date, sql_column)
+        elif "start" in sql_column.columnName or "min" in sql_column.columnName:
+            for value in generated_values:
+                if "end" in value.sqlColumn.columnName or "max" in sql_column.columnName:
+                    endingDate = datetime.datetime.strptime(value.value, "%Y-%m-%d").date()
+                    return generate_random_date(min_date, endingDate, sql_column)
+        return generate_random_date(min_date, max_date, sql_column)
+
+
+def generate_random_date(start_date, end_date, sql_column):
+    delta = end_date - start_date
+    random_days = random.randrange(delta.days + 1)
+    random_date = start_date + datetime.timedelta(days=random_days)
+    return ColumnValue(str(random_date), ValueType.STRING, sql_column)