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Fix some bugs

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This commit is contained in:
liboyang0730
2023-05-25 02:11:29 +00:00
committed by ob-robot
parent 1679608484
commit 57e42e3359
9 changed files with 36 additions and 19 deletions
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10
src/sql/engine/expr/ob_expr_substr.cpp
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@ -231,6 +231,16 @@ int ObExprSubstr::calc_result_typeN(ObExprResType &type,
} else {
type.set_varchar();
}
if (OB_SUCC(ret)
&& ob_is_text_tc(type.get_type())
&& 3 == param_num
&& !types_array[2].get_param().is_null()) {
const ObObj &len_obj = types_array[2].get_param();
int64_t substr_len = len_obj.is_int() ? len_obj.get_int() : 0;
if (substr_len > 0 && substr_len <= OB_MAX_CAST_CHAR_VARCHAR_LENGTH) {
type.set_varchar();
}
}
OZ(aggregate_charsets_for_string_result(type, types_array, 1, type_ctx.get_coll_type()));
if (OB_SUCC(ret)) {
if (is_mysql_mode() && (types_array[0].is_text() || types_array[0].is_blob())) {