replaced exists bool db scans with int for broader drivers compatibility

core/collection_model.go

@@ -762,9 +762,9 @@ func (c *Collection) updateGeneratedIdIfExists(app App) {
 
 	// add a number to the current id (if already exists)
 	for i := 2; i < 1000; i++ {
-		var exists bool
+		var exists int
 		_ = app.CollectionQuery().Select("(1)").AndWhere(dbx.HashExp{"id": newId}).Limit(1).Row(&exists)
-		if !exists {
+		if exists == 0 {
 			break
 		}
 		newId = c.idChecksum() + strconv.Itoa(i)

core/db.go

@@ -483,7 +483,7 @@ func validateRecordId(app App, collectionNameOrId string) validation.RuleFunc {
 			return validation.NewError("validation_invalid_collection", "Missing or invalid collection.")
 		}
 
-		var exists bool
+		var exists int
 
 		rowErr := app.DB().Select("(1)").
 			From(collection.Name).
@@ -491,7 +491,7 @@ func validateRecordId(app App, collectionNameOrId string) validation.RuleFunc {
 			Limit(1).
 			Row(&exists)
 
-		if rowErr != nil || !exists {
+		if rowErr != nil || exists == 0 {
 			return validation.NewError("validation_invalid_record", "Missing or invalid record.")
 		}
 

core/db_table.go

@@ -108,7 +108,7 @@ func (app *BaseApp) AuxHasTable(tableName string) bool {
 }
 
 func (app *BaseApp) hasTable(db dbx.Builder, tableName string) bool {
-	var exists bool
+	var exists int
 
 	err := db.Select("(1)").
 		From("sqlite_schema").
@@ -117,7 +117,7 @@ func (app *BaseApp) hasTable(db dbx.Builder, tableName string) bool {
 		Limit(1).
 		Row(&exists)
 
-	return err == nil && exists
+	return err == nil && exists > 0
 }
 
 // Vacuum executes VACUUM on the current app.DB() instance

core/field_text.go

@@ -193,14 +193,14 @@ func (f *TextField) ValidateValue(ctx context.Context, app App, record *Record)
 			//
 			// (@todo eventually may get replaced in the future with a system unique constraint to avoid races or wrapping the request in a transaction)
 			if f.Pattern != defaultLowercaseRecordIdPattern {
-				var exists bool
+				var exists int
 				err := app.DB().
 					Select("(1)").
 					From(record.TableName()).
 					Where(dbx.NewExp("id = {:id} COLLATE NOCASE", dbx.Params{"id": strings.ToLower(newVal)})).
 					Limit(1).
 					Row(&exists)
-				if exists || (err != nil && !errors.Is(err, sql.ErrNoRows)) {
+				if exists > 0 || (err != nil && !errors.Is(err, sql.ErrNoRows)) {
 					return validation.NewError("validation_pk_invalid", "The record primary key is invalid or already exists.")
 				}
 			}

core/migrations_runner.go

@@ -267,7 +267,7 @@ func (r *MigrationsRunner) initMigrationsTable() error {
 }
 
 func (r *MigrationsRunner) isMigrationApplied(txApp App, file string) bool {
-	var exists bool
+	var exists int
 
 	err := txApp.DB().Select("(1)").
 		From(r.tableName).
@@ -275,7 +275,7 @@ func (r *MigrationsRunner) isMigrationApplied(txApp App, file string) bool {
 		Limit(1).
 		Row(&exists)
 
-	return err == nil && exists
+	return err == nil && exists > 0
 }
 
 func (r *MigrationsRunner) saveAppliedMigration(txApp App, file string) error {

core/migrations_runner_test.go

@@ -200,7 +200,7 @@ func TestMigrationsRunnerRemoveMissingAppliedMigrations(t *testing.T) {
 }
 
 func isMigrationApplied(app core.App, file string) bool {
-	var exists bool
+	var exists int
 
 	err := app.DB().Select("(1)").
 		From(core.DefaultMigrationsTable).
@@ -208,5 +208,5 @@ func isMigrationApplied(app core.App, file string) bool {
 		Limit(1).
 		Row(&exists)
 
-	return err == nil && exists
+	return err == nil && exists > 0
 }

core/record_query.go

@@ -584,7 +584,7 @@ func (app *BaseApp) CanAccessRecord(record *Record, requestInfo *RequestInfo, ac
 		return true, nil
 	}
 
-	var exists bool
+	var exists int
 
 	query := app.RecordQuery(record.Collection()).
 		Select("(1)").
@@ -603,5 +603,5 @@ func (app *BaseApp) CanAccessRecord(record *Record, requestInfo *RequestInfo, ac
 		return false, err
 	}
 
-	return exists, nil
+	return exists > 0, nil
 }