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fix mysql system view cast collation problem

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wjhh2008 2024-04-09 12:33:07 +00:00 committed by ob-robot
parent 781b365061
commit 0ea78d4b60
3 changed files with 7 additions and 1 deletions
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1
src/sql/resolver/dml/ob_dml_resolver.cpp
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@ -1692,6 +1692,7 @@ int ObDMLResolver::resolve_sql_expr(const ParseNode &node, ObRawExpr *&expr,
ctx.view_ref_id_ = view_ref_id_;
ctx.is_variable_allowed_ = !(is_mysql_mode() && params_.is_from_create_view_);
ctx.is_expanding_view_ = params_.is_expanding_view_;
ctx.is_in_system_view_ = params_.is_in_sys_view_;
ObRawExprResolverImpl expr_resolver(ctx);
ObIArray<ObUserVarIdentRawExpr *> &user_var_exprs = get_stmt()->get_user_vars();
bool is_multi_stmt = session_info_->get_cur_exec_ctx() != NULL &&

4
src/sql/resolver/expr/ob_raw_expr.h
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@ -1613,7 +1613,8 @@ struct ObResolveContext
tg_timing_event_(TG_TIMING_EVENT_INVALID),
view_ref_id_(OB_INVALID_ID),
is_variable_allowed_(true),
is_expanding_view_(false)
is_expanding_view_(false),
is_in_system_view_(false)
{
}
@ -1660,6 +1661,7 @@ struct ObResolveContext
uint64_t view_ref_id_;
bool is_variable_allowed_;
bool is_expanding_view_;
bool is_in_system_view_;
};
typedef ObResolveContext<ObRawExprFactory> ObExprResolveContext;

3
src/sql/resolver/expr/ob_raw_expr_resolver_impl.cpp
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@ -443,6 +443,9 @@ int ObRawExprResolverImpl::do_recursive_resolve(const ParseNode *node, ObRawExpr
} else {
coll_type = ObCharset::get_default_collation(charset_type);
}
} else if (ctx_.is_in_system_view_) {
//for mysql system view, cast char type always has default collation
coll_type = ObCharset::get_system_collation();
} else {
// use connection_collation. for cast('a' as char)
if (OB_ISNULL(ctx_.session_info_)) {