using consts; avoid test data in production binary

weed/query/engine/catalog.go

@@ -288,55 +288,3 @@ func (c *SchemaCatalog) GetDefaultPartitionCount() int32 {
 	defer c.mu.RUnlock()
 	return c.defaultPartitionCount
 }
-
-// initSampleData populates the catalog with sample schema data for testing
-func (c *SchemaCatalog) initSampleData() {
-	// Create sample databases and tables
-	c.databases["default"] = &DatabaseInfo{
-		Name: "default",
-		Tables: map[string]*TableInfo{
-			"user_events": {
-				Name: "user_events",
-				Columns: []ColumnInfo{
-					{Name: "user_id", Type: "VARCHAR(100)", Nullable: true},
-					{Name: "event_type", Type: "VARCHAR(50)", Nullable: true},
-					{Name: "data", Type: "TEXT", Nullable: true},
-					// System columns - hidden by default in SELECT *
-					{Name: "_timestamp_ns", Type: "BIGINT", Nullable: false},
-					{Name: "_key", Type: "VARCHAR(255)", Nullable: true},
-					{Name: "_source", Type: "VARCHAR(50)", Nullable: false},
-				},
-			},
-			"system_logs": {
-				Name: "system_logs",
-				Columns: []ColumnInfo{
-					{Name: "level", Type: "VARCHAR(10)", Nullable: true},
-					{Name: "message", Type: "TEXT", Nullable: true},
-					{Name: "service", Type: "VARCHAR(50)", Nullable: true},
-					// System columns
-					{Name: "_timestamp_ns", Type: "BIGINT", Nullable: false},
-					{Name: "_key", Type: "VARCHAR(255)", Nullable: true},
-					{Name: "_source", Type: "VARCHAR(50)", Nullable: false},
-				},
-			},
-		},
-	}
-
-	c.databases["test"] = &DatabaseInfo{
-		Name: "test",
-		Tables: map[string]*TableInfo{
-			"test-topic": {
-				Name: "test-topic",
-				Columns: []ColumnInfo{
-					{Name: "id", Type: "INT", Nullable: true},
-					{Name: "name", Type: "VARCHAR(100)", Nullable: true},
-					{Name: "value", Type: "DOUBLE", Nullable: true},
-					// System columns
-					{Name: "_timestamp_ns", Type: "BIGINT", Nullable: false},
-					{Name: "_key", Type: "VARCHAR(255)", Nullable: true},
-					{Name: "_source", Type: "VARCHAR(50)", Nullable: false},
-				},
-			},
-		},
-	}
-}