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patch 4.0

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wangzelin.wzl
2022-10-24 10:34:53 +08:00
parent 4ad6e00ec3
commit 93a1074b0c
10533 changed files with 2588271 additions and 2299373 deletions
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186
src/sql/engine/expr/ob_expr_cast.h
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@ -16,106 +16,126 @@
#include "common/object/ob_obj_type.h"
#include "sql/engine/expr/ob_expr_operator.h"
namespace oceanbase {
namespace sql {
namespace oceanbase
{
namespace sql
{
// The length of array need to be equal to the number of types defined at ObObjType
static const int32_t CAST_STRING_DEFUALT_LENGTH[49] = {
0, // null
4, // tinyint
6, // smallint
9, // medium
11, // int32
20, // int
3, // utinyint
5, // usmallint
8, // umedium
10, // uint32
20, // uint
12, // float
23, // double here we set it larger than mysql, mysql is 22, sometimes it is 23,for safely.we set 23.
12, // ufloat
23, // udouble
11, // decimal
11, // decimal
19, // datetime
19, // timestamp
10, // date
10, // time
4, // year
1, // varchar
1, // char
1, // binary
0, // extend
0, // unknown
1, // tinytext text share default length with varchar
1, // text
1, // mediumtext
1, // longtext
64, // bit
1, // enum
1, // set
1, // enuminner
1, // setinner
25, // timestampTZ timestamp + time zone('+00:00')
25, // timestampLTZ
19, // timestampNano timestamp + nanosecond scale
1, // raw
7, // intervalYM yyyy-mm
19, // intervalDS ddd hh:mm:ss.fractionsecond(6)
12, // numberfloat same with float
1, // nvarchar2 share default length with varchar
1, // nchar share default length with char
1, // urowid
1, // lob
1, // json
0 // max, invalid type, or count of obj type
0, //null
4, //tinyint
6, //smallint
9, //medium
11,//int32
20,//int
3,//utinyint
5,//usmallint
8,//umedium
10,//uint32
20,//uint
12,//float
23,//double here we set it larger than mysql, mysql is 22, sometimes it is 23,for safely.we set 23.
12,//ufloat
23,//udouble
11,//decimal
11,//decimal
19,//datetime
19,//timestamp
10,//date
10,//time
4,//year
1,//varchar
1,//char
1,//binary
0,//extend
0,//unknown
1,//tinytext text share default length with varchar
1,//text
1,//mediumtext
1,//longtext
64,//bit
1,//enum
1,//set
1,//enuminner
1,//setinner
25,//timestampTZ timestamp + time zone('+00:00')
25,//timestampLTZ
19,//timestampNano timestamp + nanosecond scale
1,//raw
7,//intervalYM yyyy-mm
19,//intervalDS ddd hh:mm:ss.fractionsecond(6)
12,//numberfloat same with float
1,//nvarchar2 share default length with varchar
1,//nchar share default length with char
1,//urowid
1,//lob
1,
0//max, invalid type, or count of obj type
};
static_assert(common::ObMaxType + 1 == sizeof(CAST_STRING_DEFUALT_LENGTH) / sizeof(int32_t),
"Please keep the length of CAST_STRING_DEFUALT_LENGTH must equal to the number of types");
"Please keep the length of CAST_STRING_DEFUALT_LENGTH must equal to the number of types");
class ObExprCast : public ObFuncExprOperator {
class ObExprCast: public ObFuncExprOperator
{
OB_UNIS_VERSION_V(1);
const static int32_t OB_LITERAL_MAX_INT_LEN = 21;
public:
ObExprCast();
explicit ObExprCast(common::ObIAllocator& alloc);
virtual ~ObExprCast(){};
explicit ObExprCast(common::ObIAllocator &alloc);
virtual ~ObExprCast() {};
virtual int calc_result_type2(
ObExprResType& type, ObExprResType& type1, ObExprResType& type2, common::ObExprTypeCtx& type_ctx) const;
virtual int calc_result_type2(ObExprResType &type,
ObExprResType &type1,
ObExprResType &type2,
common::ObExprTypeCtx &type_ctx) const;
virtual int calc_result2(
common::ObObj& result, const common::ObObj& obj1, const common::ObObj& obj2, common::ObExprCtx& expr_ctx) const;
virtual int cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
virtual int cg_expr(ObExprCGCtx &op_cg_ctx,
const ObRawExpr &raw_expr,
ObExpr &rt_expr) const override;
// extra_serialize_ == 1 : is implicit cast
void set_implicit_cast(bool v)
{
extra_serialize_ = v ? 1 : 0;
}
void set_implicit_cast(bool v) { extra_serialize_ = v ? 1 : 0; }
private:
int check_target_type_precision_valid(const ObExprResType& type, const common::ObCastMode cast_mode) const;
int get_cast_type(const ObExprResType param_type2, ObExprResType& dst_type) const;
int get_explicit_cast_cm(const ObExprResType& src_type, const ObExprResType& dst_type,
const ObSQLSessionInfo& session, const ObRawExpr& cast_raw_expr, common::ObCastMode& cast_mode) const;
int get_cast_type(const ObExprResType param_type2,
const ObCastMode cast_mode,
ObExprResType &dst_type) const;
int get_explicit_cast_cm(const ObExprResType &src_type,
const ObExprResType &dst_type,
const ObSQLSessionInfo &session,
const ObRawExpr &cast_raw_expr,
common::ObCastMode &cast_mode) const;
bool check_cast_allowed(const common::ObObjType orig_type,
const common::ObCollationType orig_cs_type,
const common::ObObjType expect_type,
const common::ObCollationType expect_cs_type,
const bool is_explicit_cast) const;
private:
int get_cast_string_len(ObExprResType& type1, ObExprResType& type2, common::ObExprTypeCtx& type_ctx, int32_t& res_len,
int16_t& length_semantics, common::ObCollationType conn) const;
int get_cast_inttc_len(ObExprResType& type1, ObExprResType& type2, common::ObExprTypeCtx& type_ctx, int32_t& res_len,
int16_t& length_semantics, common::ObCollationType conn) const;
int do_implicit_cast(common::ObExprCtx& expr_ctx, const common::ObCastMode& cast_mode,
const common::ObObjType& dst_type, const common::ObObj& src_obj, common::ObObj& dst_obj) const;
int get_cast_string_len(ObExprResType &type1,
ObExprResType &type2,
common::ObExprTypeCtx &type_ctx,
int32_t &res_len,
int16_t &length_semantics,
common::ObCollationType conn,
common::ObCastMode cast_mode) const;
int get_cast_inttc_len(ObExprResType &type1,
ObExprResType &type2,
common::ObExprTypeCtx &type_ctx,
int32_t &res_len,
int16_t &length_semantics,
common::ObCollationType conn,
common::ObCastMode cast_mode) const;
int do_implicit_cast(common::ObExprCtx &expr_ctx,
const common::ObCastMode &cast_mode,
const common::ObObjType &dst_type,
const common::ObObj &src_obj,
common::ObObj &dst_obj) const;
// disallow copy
ObExprCast(const ObExprCast& other);
ObExprCast& operator=(const ObExprCast& other);
ObExprCast(const ObExprCast &other);
ObExprCast &operator=(const ObExprCast &other);
};
} // namespace sql
} // namespace oceanbase
#endif /* _OB_EXPR_CAST_H_ */
}
}
#endif /* _OB_EXPR_CAST_H_ */