29 StmtType type()
const override {
return StmtType::EXPLAIN; }
31 Stmt *child()
const {
return child_stmt_.get(); }
36 unique_ptr<Stmt> child_stmt_;
一个DB实例负责管理一批表
Definition: db.h:46
explain语句
Definition: explain_stmt.h:24
Stmt for Statement
Definition: stmt.h:83
描述一个explain语句
Definition: parse_defs.h:249