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[FEAT MERGE] Lob SQL refactoring (Mem-LobLocator, expressions and dbms_lob adaptions)

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Co-authored-by: chaser-ch <chaser.ch@antgroup.com>
This commit is contained in:
obdev
2023-01-28 20:40:15 +08:00
committed by ob-robot
parent 4bb1033505
commit 3d4f554258
350 changed files with 19091 additions and 3918 deletions
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15
src/sql/engine/expr/ob_expr_char_length.cpp
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@ -13,6 +13,7 @@
#define USING_LOG_PREFIX SQL_ENG
#include "sql/engine/expr/ob_expr_char_length.h"
#include "sql/engine/expr/ob_expr_lob_utils.h"
namespace oceanbase
{
@ -48,7 +49,9 @@ int ObExprCharLength::calc_result_type1(ObExprResType &type,
type.set_int();
type.set_precision(ObAccuracy::DDL_DEFAULT_ACCURACY[ObIntType].precision_);
type.set_scale(DEFAULT_SCALE_FOR_INTEGER);
text.set_calc_type(ObVarcharType);
if (!ob_is_text_tc(text.get_type())) {
text.set_calc_type(ObVarcharType);
}
text.set_calc_collation_type(text.get_collation_type());
text.set_calc_collation_level(text.get_collation_level());
}
@ -68,11 +71,19 @@ int ObExprCharLength::eval_char_length(const ObExpr &expr, ObEvalCtx &ctx,
LOG_WARN("eval arg failed", K(ret));
} else if (arg->is_null()) {
res.set_null();
} else {
} else if (in_tc != ObTextTC) {
const ObString &arg_str = arg->get_string();
size_t length = ObCharset::strlen_char(expr.args_[0]->datum_meta_.cs_type_,
arg_str.ptr(), arg_str.length());
res.set_int(length);
} else {
int64_t char_len = 0;
if (OB_FAIL(ObTextStringHelper::get_char_len(ctx, *arg,
expr.args_[0]->datum_meta_, expr.args_[0]->obj_meta_.has_lob_header(), char_len))) {
LOG_WARN("failed to read realdata", K(ret));
} else {
res.set_int(static_cast<size_t>(char_len));
}
}
return ret;
}