diff options
Diffstat (limited to 'storage/innobase/include/rem0cmp.h')
| -rw-r--r-- | storage/innobase/include/rem0cmp.h | 37 |
1 files changed, 19 insertions, 18 deletions
diff --git a/storage/innobase/include/rem0cmp.h b/storage/innobase/include/rem0cmp.h index 1b1ee26b809..36d91db0e87 100644 --- a/storage/innobase/include/rem0cmp.h +++ b/storage/innobase/include/rem0cmp.h @@ -24,15 +24,16 @@ cmp_types_are_equal( /* out: TRUE if the types are considered equal in comparisons */ dtype_t* type1, /* in: type 1 */ - dtype_t* type2); /* in: type 2 */ + dtype_t* type2, /* in: type 2 */ + ibool check_charsets); /* in: whether to check charsets */ /***************************************************************** This function is used to compare two data fields for which we know the data type. */ UNIV_INLINE int cmp_data_data( -/*==========*/ - /* out: 1, 0, -1, if data1 is greater, equal, +/*==========*/ + /* out: 1, 0, -1, if data1 is greater, equal, less than data2, respectively */ dtype_t* cur_type,/* in: data type of the fields */ byte* data1, /* in: data field (== a pointer to a memory @@ -47,8 +48,8 @@ data type. */ int cmp_data_data_slow( -/*===============*/ - /* out: 1, 0, -1, if data1 is greater, equal, +/*===============*/ + /* out: 1, 0, -1, if data1 is greater, equal, less than data2, respectively */ dtype_t* cur_type,/* in: data type of the fields */ byte* data1, /* in: data field (== a pointer to a memory @@ -63,8 +64,8 @@ has its data type field set. */ UNIV_INLINE int cmp_dfield_dfield( -/*==============*/ - /* out: 1, 0, -1, if dfield1 is greater, equal, +/*==============*/ + /* out: 1, 0, -1, if dfield1 is greater, equal, less than dfield2, respectively */ dfield_t* dfield1,/* in: data field; must have type field set */ dfield_t* dfield2);/* in: data field */ @@ -79,9 +80,9 @@ made. */ int cmp_dtuple_rec_with_match( -/*======================*/ - /* out: 1, 0, -1, if dtuple is greater, equal, - less than rec, respectively, when only the +/*======================*/ + /* out: 1, 0, -1, if dtuple is greater, equal, + less than rec, respectively, when only the common first fields are compared, or until the first externally stored field in rec */ @@ -91,10 +92,10 @@ cmp_dtuple_rec_with_match( has an equal number or more fields than dtuple */ const ulint* offsets,/* in: array returned by rec_get_offsets() */ - ulint* matched_fields, /* in/out: number of already completely + ulint* matched_fields, /* in/out: number of already completely matched fields; when function returns, contains the value for current comparison */ - ulint* matched_bytes); /* in/out: number of already matched + ulint* matched_bytes); /* in/out: number of already matched bytes within the first field not completely matched; when function returns, contains the value for current comparison */ @@ -104,10 +105,10 @@ Compares a data tuple to a physical record. */ int cmp_dtuple_rec( /*===========*/ - /* out: 1, 0, -1, if dtuple is greater, equal, + /* out: 1, 0, -1, if dtuple is greater, equal, less than rec, respectively; see the comments for cmp_dtuple_rec_with_match */ - dtuple_t* dtuple, /* in: data tuple */ + dtuple_t* dtuple, /* in: data tuple */ rec_t* rec, /* in: physical record */ const ulint* offsets);/* in: array returned by rec_get_offsets() */ /****************************************************************** @@ -128,7 +129,7 @@ encountered, then 0 is returned. */ int cmp_rec_rec_with_match( -/*===================*/ +/*===================*/ /* out: 1, 0 , -1 if rec1 is greater, equal, less, respectively, than rec2; only the common first fields are compared */ @@ -137,11 +138,11 @@ cmp_rec_rec_with_match( const ulint* offsets1,/* in: rec_get_offsets(rec1, index) */ const ulint* offsets2,/* in: rec_get_offsets(rec2, index) */ dict_index_t* index, /* in: data dictionary index */ - ulint* matched_fields, /* in/out: number of already completely + ulint* matched_fields, /* in/out: number of already completely matched fields; when the function returns, contains the value the for current comparison */ - ulint* matched_bytes);/* in/out: number of already matched + ulint* matched_bytes);/* in/out: number of already matched bytes within the first field not completely matched; when the function returns, contains the value for the current comparison */ @@ -151,7 +152,7 @@ first fields are compared. */ UNIV_INLINE int cmp_rec_rec( -/*========*/ +/*========*/ /* out: 1, 0 , -1 if rec1 is greater, equal, less, respectively, than rec2; only the common first fields are compared */ |