hcq/oceanbase
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

Fix a bug of omitting to set res type length for lob exprs

Browse Source
This commit is contained in:
obdev
2023-04-13 08:40:19 +00:00
committed by ob-robot
parent 475b0fa975
commit 3926fdba2f
8 changed files with 37 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
src/sql/engine/expr/ob_expr_to_clob.cpp
View File

@ -17,6 +17,7 @@
#include "objit/common/ob_item_type.h"
#include "lib/oblog/ob_log.h"
#include "sql/engine/expr/ob_expr_lob_utils.h"
#include "sql/engine/expr/ob_expr_result_type_util.h"
namespace oceanbase
{
@ -55,10 +56,25 @@ int ObExprToClob::calc_result_type1(ObExprResType &type,
type.set_clob();
type.set_collation_level(CS_LEVEL_IMPLICIT);
type.set_collation_type(nls_param.nls_collation_);
text.set_calc_collation_type(nls_param.nls_collation_);
if (!text.is_clob()) {
text.set_calc_type(ObVarcharType);
ObLength res_len = -1;
ObExprResType tmp_calc_type; // for deducing res len
tmp_calc_type.set_varchar(); // set calc type of param to tmp_calc_type
tmp_calc_type.set_length_semantics(LS_BYTE); // length_semantics of res type clob is byte
tmp_calc_type.set_collation_type(nls_param.nls_collation_);
if (OB_FAIL(ObExprResultTypeUtil::deduce_max_string_length_oracle(
type_ctx.get_session()->get_dtc_params(), text, tmp_calc_type, res_len))) {
LOG_WARN("fail to deduce result length", K(ret), K(text), K(type));
} else {
text.set_calc_length_semantics(text.is_character_type() ? text.get_length_semantics() : LS_BYTE);
text.set_calc_length(text.is_character_type() ? text.get_length() : res_len);
type.set_length(res_len);
}
} else {
type.set_length(text.get_length());
}
text.set_calc_collation_type(nls_param.nls_collation_);
} else {
ret = OB_ERR_INVALID_TYPE_FOR_OP;
LOG_WARN("wrong type of argument in function to_clob", K(ret), K(text));