Implement IN function

query_executors/memory_executor/memory_executor.go

@@ -192,6 +192,8 @@ func getFieldValue(field parsers.SelectItem, queryParameters map[string]interfac
 			return strings_ToString(typedValue.Arguments, queryParameters, row)
 		case parsers.FunctionCallIsDefined:
 			return typeChecking_IsDefined(typedValue.Arguments, queryParameters, row)
+		case parsers.FunctionCallIn:
+			return misc_In(typedValue.Arguments, queryParameters, row)
 		}
 	}
 

query_executors/memory_executor/memory_executor_misc_test.go

@@ -58,4 +58,50 @@ func Test_Execute(t *testing.T) {
 			},
 		)
 	})
+
+	t.Run("Should execute IN function", func(t *testing.T) {
+		testQueryExecute(
+			t,
+			parsers.SelectStmt{
+				SelectItems: []parsers.SelectItem{
+					{
+						Path: []string{"c", "id"},
+						Type: parsers.SelectItemTypeField,
+					},
+				},
+				Table: parsers.Table{Value: "c"},
+				Filters: parsers.SelectItem{
+					Type: parsers.SelectItemTypeFunctionCall,
+					Value: parsers.FunctionCall{
+						Type: parsers.FunctionCallIn,
+						Arguments: []interface{}{
+							parsers.SelectItem{
+								Path: []string{"c", "id"},
+								Type: parsers.SelectItemTypeField,
+							},
+							parsers.SelectItem{
+								Type: parsers.SelectItemTypeConstant,
+								Value: parsers.Constant{
+									Type:  parsers.ConstantTypeString,
+									Value: "123",
+								},
+							},
+							parsers.SelectItem{
+								Type: parsers.SelectItemTypeConstant,
+								Value: parsers.Constant{
+									Type:  parsers.ConstantTypeString,
+									Value: "456",
+								},
+							},
+						},
+					},
+				},
+			},
+			mockData,
+			[]memoryexecutor.RowType{
+				map[string]interface{}{"id": "456"},
+				map[string]interface{}{"id": "123"},
+			},
+		)
+	})
 }

query_executors/memory_executor/misc_functions.go

@@ -0,0 +1,18 @@
+package memoryexecutor
+
+import (
+	"github.com/pikami/cosmium/parsers"
+)
+
+func misc_In(arguments []interface{}, queryParameters map[string]interface{}, row RowType) bool {
+	value := getFieldValue(arguments[0].(parsers.SelectItem), queryParameters, row)
+
+	for i := 1; i < len(arguments); i++ {
+		compareValue := getFieldValue(arguments[i].(parsers.SelectItem), queryParameters, row)
+		if compareValues(value, compareValue) == 0 {
+			return true
+		}
+	}
+
+	return false
+}