-
Notifications
You must be signed in to change notification settings - Fork 4k
/
Copy pathitem_timefunc.cc
3852 lines (3410 loc) · 125 KB
/
item_timefunc.cc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*
Copyright (c) 2000, 2024, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is designed to work with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have either included with
the program or referenced in the documentation.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License, version 2.0, for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/**
@file
@brief
This file defines all time functions
*/
#include "sql/item_timefunc.h"
#include "my_config.h"
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <algorithm>
#include <climits>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include "decimal.h"
#include "lex_string.h"
#include "my_compiler.h"
#include "my_dbug.h"
#include "my_sys.h"
#include "my_systime.h" // my_micro_time
#include "mysql/strings/int2str.h"
#include "mysql/strings/m_ctype.h"
#include "mysql/strings/my_strtoll10.h"
#include "mysql_com.h"
#include "mysqld_error.h"
#include "nulls.h"
#include "sql-common/my_decimal.h"
#include "sql/current_thd.h"
#include "sql/dd/info_schema/table_stats.h"
#include "sql/dd/object_id.h" // dd::Object_id
#include "sql/derror.h" // ER_THD
#include "sql/parse_tree_node_base.h" // Parse_context
#include "sql/sql_class.h" // THD
#include "sql/sql_error.h"
#include "sql/sql_lex.h"
#include "sql/sql_locale.h" // my_locale_en_US
#include "sql/sql_time.h" // make_truncated_value_warning
#include "sql/strfunc.h" // check_word
#include "sql/system_variables.h"
#include "sql/table.h"
#include "sql/tztime.h" // Time_zone
#include "sql_string.h" // stringcmp
#include "string_with_len.h"
#include "strmake.h"
#include "template_utils.h"
#include "typelib.h"
using std::max;
using std::min;
/**
Check and adjust a time value with a warning.
@param ltime Time variable.
@param decimals Precision.
@retval True on error, false of success.
*/
static bool adjust_time_range_with_warn(MYSQL_TIME *ltime, uint8 decimals) {
/* Fatally bad value should not come here */
if (check_time_range_quick(*ltime)) {
int warning = 0;
if (make_truncated_value_warning(current_thd, Sql_condition::SL_WARNING,
ErrConvString(ltime, decimals),
MYSQL_TIMESTAMP_TIME, NullS))
return true;
adjust_time_range(ltime, &warning);
}
return false;
}
/*
Convert seconds to MYSQL_TIME value with overflow checking.
SYNOPSIS:
sec_to_time()
seconds number of seconds
ltime output MYSQL_TIME value
DESCRIPTION
If the 'seconds' argument is inside MYSQL_TIME data range, convert it to a
corresponding value.
Otherwise, truncate the resulting value to the nearest endpoint.
Note: Truncation in this context means setting the result to the MAX/MIN
value of TIME type if value is outside the allowed range.
If the number of decimals exceeds what is supported, the value
is rounded to the supported number of decimals.
RETURN
1 if the value was truncated during conversion
0 otherwise
*/
static bool sec_to_time(lldiv_t seconds, MYSQL_TIME *ltime) {
int warning = 0;
set_zero_time(ltime, MYSQL_TIMESTAMP_TIME);
if (seconds.quot < 0 || seconds.rem < 0) {
ltime->neg = true;
seconds.quot = -seconds.quot;
seconds.rem = -seconds.rem;
}
if (seconds.quot > TIME_MAX_VALUE_SECONDS) {
set_max_hhmmss(ltime);
return true;
}
ltime->hour = (uint)(seconds.quot / 3600);
const uint sec = (uint)(seconds.quot % 3600);
ltime->minute = sec / 60;
ltime->second = sec % 60;
time_add_nanoseconds_adjust_frac(ltime, static_cast<uint>(seconds.rem),
&warning,
current_thd->is_fsp_truncate_mode());
adjust_time_range(ltime, &warning);
return warning ? true : false;
}
/** Array of known date_time formats */
static constexpr const Known_date_time_format known_date_time_formats[6] = {
{"USA", "%m.%d.%Y", "%Y-%m-%d %H.%i.%s", "%h:%i:%s %p"},
{"JIS", "%Y-%m-%d", "%Y-%m-%d %H:%i:%s", "%H:%i:%s"},
{"ISO", "%Y-%m-%d", "%Y-%m-%d %H:%i:%s", "%H:%i:%s"},
{"EUR", "%d.%m.%Y", "%Y-%m-%d %H.%i.%s", "%H.%i.%s"},
{"INTERNAL", "%Y%m%d", "%Y%m%d%H%i%s", "%H%i%s"},
{nullptr, nullptr, nullptr, nullptr}};
/*
Date formats corresponding to compound %r and %T conversion specifiers
*/
static const Date_time_format time_ampm_format = {{0}, {"%I:%i:%S %p", 11}};
static const Date_time_format time_24hrs_format = {{0}, {"%H:%i:%S", 8}};
/**
Extract datetime value to MYSQL_TIME struct from string value
according to format string.
@param format date/time format specification
@param val String to decode
@param length Length of string
@param l_time Store result here
@param cached_timestamp_type It uses to get an appropriate warning
in the case when the value is truncated.
@param sub_pattern_end if non-zero then we are parsing string which
should correspond compound specifier (like %T or
%r) and this parameter is pointer to place where
pointer to end of string matching this specifier
should be stored.
@param date_time_type "time" or "datetime", used for the error/warning msg
@param data_type Type of data
@param flags flags used by check_date()
@note
Possibility to parse strings matching to patterns equivalent to compound
specifiers is mainly intended for use from inside of this function in
order to understand %T and %r conversion specifiers, so number of
conversion specifiers that can be used in such sub-patterns is limited.
Also most of checks are skipped in this case.
@note
If one adds new format specifiers to this function he should also
consider adding them to Item_func_str_to_date::fix_from_format().
@retval
0 ok
@retval
1 error
*/
static bool extract_date_time(const Date_time_format *format, const char *val,
size_t length, MYSQL_TIME *l_time,
enum_mysql_timestamp_type cached_timestamp_type,
const char **sub_pattern_end,
const char *date_time_type,
enum_field_types data_type,
my_time_flags_t flags) {
int weekday = 0, yearday = 0, daypart = 0;
int week_number = -1;
int error = 0;
int strict_week_number_year = -1;
int frac_part;
bool usa_time = false;
bool sunday_first_n_first_week_non_iso = false;
bool strict_week_number = false;
bool strict_week_number_year_type = false;
const char *val_begin = val;
const char *val_end = val + length;
const char *ptr = format->format.str;
const char *end = ptr + format->format.length;
const CHARSET_INFO *cs = &my_charset_bin;
DBUG_TRACE;
if (!sub_pattern_end) memset(l_time, 0, sizeof(*l_time));
for (; ptr != end && val != val_end; ptr++) {
/* Skip pre-space between each argument */
if ((val += cs->cset->scan(cs, val, val_end, MY_SEQ_SPACES)) >= val_end)
break;
if (*ptr == '%' && ptr + 1 != end) {
int val_len;
const char *tmp;
error = 0;
val_len = (uint)(val_end - val);
switch (*++ptr) {
/* Year */
case 'Y':
tmp = val + min(4, val_len);
l_time->year = (int)my_strtoll10(val, &tmp, &error);
if ((int)(tmp - val) <= 2)
l_time->year = year_2000_handling(l_time->year);
val = tmp;
break;
case 'y':
tmp = val + min(2, val_len);
l_time->year = (int)my_strtoll10(val, &tmp, &error);
val = tmp;
l_time->year = year_2000_handling(l_time->year);
break;
/* Month */
case 'm':
case 'c':
tmp = val + min(2, val_len);
l_time->month = (int)my_strtoll10(val, &tmp, &error);
val = tmp;
break;
case 'M':
if ((l_time->month = check_word(my_locale_en_US.month_names, val,
val_end, &val)) <= 0)
goto err;
break;
case 'b':
if ((l_time->month = check_word(my_locale_en_US.ab_month_names, val,
val_end, &val)) <= 0)
goto err;
break;
/* Day */
case 'd':
case 'e':
tmp = val + min(2, val_len);
l_time->day = (int)my_strtoll10(val, &tmp, &error);
val = tmp;
break;
case 'D':
tmp = val + min(2, val_len);
l_time->day = (int)my_strtoll10(val, &tmp, &error);
/* Skip 'st, 'nd, 'th .. */
val = tmp + min<long>((val_end - tmp), 2);
break;
/* Hour */
case 'h':
case 'I':
case 'l':
usa_time = true;
[[fallthrough]];
case 'k':
case 'H':
tmp = val + min(2, val_len);
l_time->hour = (int)my_strtoll10(val, &tmp, &error);
val = tmp;
break;
/* Minute */
case 'i':
tmp = val + min(2, val_len);
l_time->minute = (int)my_strtoll10(val, &tmp, &error);
val = tmp;
break;
/* Second */
case 's':
case 'S':
tmp = val + min(2, val_len);
l_time->second = (int)my_strtoll10(val, &tmp, &error);
val = tmp;
break;
/* Second part */
case 'f':
tmp = val_end;
if (tmp - val > 6) tmp = val + 6;
l_time->second_part = (int)my_strtoll10(val, &tmp, &error);
frac_part = 6 - (int)(tmp - val);
if (frac_part > 0)
l_time->second_part *= (ulong)log_10_int[frac_part];
val = tmp;
break;
/* AM / PM */
case 'p':
if (val_len < 2 || !usa_time) goto err;
if (!my_strnncoll(&my_charset_latin1, (const uchar *)val, 2,
(const uchar *)"PM", 2))
daypart = 12;
else if (my_strnncoll(&my_charset_latin1, (const uchar *)val, 2,
(const uchar *)"AM", 2))
goto err;
val += 2;
break;
/* Exotic things */
case 'W':
if ((weekday = check_word(my_locale_en_US.day_names, val, val_end,
&val)) <= 0)
goto err;
break;
case 'a':
if ((weekday = check_word(my_locale_en_US.ab_day_names, val, val_end,
&val)) <= 0)
goto err;
break;
case 'w':
tmp = val + 1;
if ((weekday = (int)my_strtoll10(val, &tmp, &error)) < 0 ||
weekday >= 7)
goto err;
/* We should use the same 1 - 7 scale for %w as for %W */
if (!weekday) weekday = 7;
val = tmp;
break;
case 'j':
tmp = val + min(val_len, 3);
yearday = (int)my_strtoll10(val, &tmp, &error);
val = tmp;
break;
/* Week numbers */
case 'V':
case 'U':
case 'v':
case 'u':
sunday_first_n_first_week_non_iso = (*ptr == 'U' || *ptr == 'V');
strict_week_number = (*ptr == 'V' || *ptr == 'v');
tmp = val + min(val_len, 2);
if ((week_number = (int)my_strtoll10(val, &tmp, &error)) < 0 ||
(strict_week_number && !week_number) || week_number > 53)
goto err;
val = tmp;
break;
/* Year used with 'strict' %V and %v week numbers */
case 'X':
case 'x':
strict_week_number_year_type = (*ptr == 'X');
tmp = val + min(4, val_len);
strict_week_number_year = (int)my_strtoll10(val, &tmp, &error);
val = tmp;
break;
/* Time in AM/PM notation */
case 'r':
/*
We can't just set error here, as we don't want to generate two
warnings in case of errors
*/
if (extract_date_time(&time_ampm_format, val, (uint)(val_end - val),
l_time, cached_timestamp_type, &val, "time",
data_type, flags))
return true;
break;
/* Time in 24-hour notation */
case 'T':
if (extract_date_time(&time_24hrs_format, val, (uint)(val_end - val),
l_time, cached_timestamp_type, &val, "time",
data_type, flags))
return true;
break;
/* Conversion specifiers that match classes of characters */
case '.':
while (val < val_end && my_ispunct(cs, *val)) val++;
break;
case '@':
while (val < val_end && my_isalpha(cs, *val)) val++;
break;
case '#':
while (val < val_end && my_isdigit(cs, *val)) val++;
break;
default:
goto err;
}
if (error) // Error from my_strtoll10
goto err;
} else if (!my_isspace(cs, *ptr)) {
if (*val != *ptr) goto err;
val++;
}
}
if (usa_time) {
if (l_time->hour > 12 || l_time->hour < 1) goto err;
l_time->hour = l_time->hour % 12 + daypart;
}
/*
If we are recursively called for parsing string matching compound
specifiers we are already done.
*/
if (sub_pattern_end) {
*sub_pattern_end = val;
return false;
}
if (yearday > 0) {
uint days;
days = calc_daynr(l_time->year, 1, 1) + yearday - 1;
if (days <= 0 || days > MAX_DAY_NUMBER) goto err;
get_date_from_daynr(days, &l_time->year, &l_time->month, &l_time->day);
}
if (week_number >= 0 && weekday) {
int days;
uint weekday_b;
/*
%V,%v require %X,%x resprectively,
%U,%u should be used with %Y and not %X or %x
*/
if ((strict_week_number &&
(strict_week_number_year < 0 ||
strict_week_number_year_type != sunday_first_n_first_week_non_iso)) ||
(!strict_week_number && strict_week_number_year >= 0))
goto err;
/* Number of days since year 0 till 1st Jan of this year */
days = calc_daynr(
(strict_week_number ? strict_week_number_year : l_time->year), 1, 1);
/* Which day of week is 1st Jan of this year */
weekday_b = calc_weekday(days, sunday_first_n_first_week_non_iso);
/*
Below we are going to sum:
1) number of days since year 0 till 1st day of 1st week of this year
2) number of days between 1st week and our week
3) and position of our day in the week
*/
if (sunday_first_n_first_week_non_iso) {
days += ((weekday_b == 0) ? 0 : 7) - weekday_b + (week_number - 1) * 7 +
weekday % 7;
} else {
days += ((weekday_b <= 3) ? 0 : 7) - weekday_b + (week_number - 1) * 7 +
(weekday - 1);
}
if (days <= 0 || days > MAX_DAY_NUMBER) goto err;
get_date_from_daynr(days, &l_time->year, &l_time->month, &l_time->day);
}
assert(l_time->year <= 9999);
if (data_type == MYSQL_TYPE_TIME) flags &= ~TIME_NO_ZERO_DATE;
int warnings;
if (check_datetime_range(*l_time) ||
check_date(*l_time, non_zero_date(*l_time), flags, &warnings))
goto err;
if (val != val_end) {
do {
if (!my_isspace(&my_charset_latin1, *val)) {
// TS-TODO: extract_date_time is not UCS2 safe
if (make_truncated_value_warning(current_thd, Sql_condition::SL_WARNING,
ErrConvString(val_begin, length),
cached_timestamp_type, NullS))
goto err;
break;
}
} while (++val != val_end);
}
return false;
err : {
char buff[128];
strmake(buff, val_begin, min<size_t>(length, sizeof(buff) - 1));
push_warning_printf(current_thd, Sql_condition::SL_WARNING,
ER_WRONG_VALUE_FOR_TYPE,
ER_THD(current_thd, ER_WRONG_VALUE_FOR_TYPE),
date_time_type, buff, "str_to_date");
}
return true;
}
/**
Create a formatted date/time value in a string.
*/
bool make_date_time(Date_time_format *format, MYSQL_TIME *l_time,
enum_mysql_timestamp_type type, String *str) {
char intbuff[15];
uint hours_i;
uint weekday;
ulong length;
const char *ptr, *end;
THD *thd = current_thd;
MY_LOCALE *locale = thd->variables.lc_time_names;
str->length(0);
if (l_time->neg) str->append('-');
end = (ptr = format->format.str) + format->format.length;
for (; ptr != end; ptr++) {
if (*ptr != '%' || ptr + 1 == end)
str->append(*ptr);
else {
switch (*++ptr) {
case 'M':
if (!l_time->month) return true;
str->append(
locale->month_names->type_names[l_time->month - 1],
strlen(locale->month_names->type_names[l_time->month - 1]),
system_charset_info);
break;
case 'b':
if (!l_time->month) return true;
str->append(
locale->ab_month_names->type_names[l_time->month - 1],
strlen(locale->ab_month_names->type_names[l_time->month - 1]),
system_charset_info);
break;
case 'W':
if (type == MYSQL_TIMESTAMP_TIME || !(l_time->month || l_time->year))
return true;
weekday = calc_weekday(
calc_daynr(l_time->year, l_time->month, l_time->day), false);
str->append(locale->day_names->type_names[weekday],
strlen(locale->day_names->type_names[weekday]),
system_charset_info);
break;
case 'a':
if (type == MYSQL_TIMESTAMP_TIME || !(l_time->month || l_time->year))
return true;
weekday = calc_weekday(
calc_daynr(l_time->year, l_time->month, l_time->day), false);
str->append(locale->ab_day_names->type_names[weekday],
strlen(locale->ab_day_names->type_names[weekday]),
system_charset_info);
break;
case 'D':
if (type == MYSQL_TIMESTAMP_TIME) return true;
length = longlong10_to_str(l_time->day, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 1, '0');
if (l_time->day >= 10 && l_time->day <= 19)
str->append(STRING_WITH_LEN("th"));
else {
switch (l_time->day % 10) {
case 1:
str->append(STRING_WITH_LEN("st"));
break;
case 2:
str->append(STRING_WITH_LEN("nd"));
break;
case 3:
str->append(STRING_WITH_LEN("rd"));
break;
default:
str->append(STRING_WITH_LEN("th"));
break;
}
}
break;
case 'Y':
length = longlong10_to_str(l_time->year, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 4, '0');
break;
case 'y':
length = longlong10_to_str(l_time->year % 100, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 2, '0');
break;
case 'm':
length = longlong10_to_str(l_time->month, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 2, '0');
break;
case 'c':
length = longlong10_to_str(l_time->month, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 1, '0');
break;
case 'd':
length = longlong10_to_str(l_time->day, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 2, '0');
break;
case 'e':
length = longlong10_to_str(l_time->day, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 1, '0');
break;
case 'f':
length =
longlong10_to_str(l_time->second_part, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 6, '0');
break;
case 'H':
length = longlong10_to_str(l_time->hour, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 2, '0');
break;
case 'h':
case 'I':
hours_i = (l_time->hour % 24 + 11) % 12 + 1;
length = longlong10_to_str(hours_i, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 2, '0');
break;
case 'i': /* minutes */
length = longlong10_to_str(l_time->minute, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 2, '0');
break;
case 'j': {
if (type == MYSQL_TIMESTAMP_TIME) return true;
int radix = 10;
const int diff =
calc_daynr(l_time->year, l_time->month, l_time->day) -
calc_daynr(l_time->year, 1, 1) + 1;
if (diff < 0) radix = -10;
length = longlong10_to_str(diff, intbuff, radix) - intbuff;
str->append_with_prefill(intbuff, length, 3, '0');
} break;
case 'k':
length = longlong10_to_str(l_time->hour, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 1, '0');
break;
case 'l':
hours_i = (l_time->hour % 24 + 11) % 12 + 1;
length = longlong10_to_str(hours_i, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 1, '0');
break;
case 'p':
hours_i = l_time->hour % 24;
str->append(hours_i < 12 ? "AM" : "PM", 2);
break;
case 'r':
length = sprintf(intbuff,
((l_time->hour % 24) < 12) ? "%02d:%02d:%02d AM"
: "%02d:%02d:%02d PM",
(l_time->hour + 11) % 12 + 1, l_time->minute,
l_time->second);
str->append(intbuff, length);
break;
case 'S':
case 's':
length = longlong10_to_str(l_time->second, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 2, '0');
break;
case 'T':
length = sprintf(intbuff, "%02d:%02d:%02d", l_time->hour,
l_time->minute, l_time->second);
str->append(intbuff, length);
break;
case 'U':
case 'u': {
uint year;
if (type == MYSQL_TIMESTAMP_TIME) return true;
length =
longlong10_to_str(calc_week(*l_time,
(*ptr) == 'U' ? WEEK_FIRST_WEEKDAY
: WEEK_MONDAY_FIRST,
&year),
intbuff, 10) -
intbuff;
str->append_with_prefill(intbuff, length, 2, '0');
} break;
case 'v':
case 'V': {
uint year;
if (type == MYSQL_TIMESTAMP_TIME) return true;
length =
longlong10_to_str(
calc_week(*l_time,
((*ptr) == 'V' ? (WEEK_YEAR | WEEK_FIRST_WEEKDAY)
: (WEEK_YEAR | WEEK_MONDAY_FIRST)),
&year),
intbuff, 10) -
intbuff;
str->append_with_prefill(intbuff, length, 2, '0');
} break;
case 'x':
case 'X': {
uint year;
if (type == MYSQL_TIMESTAMP_TIME) return true;
(void)calc_week(*l_time,
((*ptr) == 'X' ? WEEK_YEAR | WEEK_FIRST_WEEKDAY
: WEEK_YEAR | WEEK_MONDAY_FIRST),
&year);
length = longlong10_to_str(year, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 4, '0');
} break;
case 'w':
if (type == MYSQL_TIMESTAMP_TIME || !(l_time->month || l_time->year))
return true;
weekday = calc_weekday(
calc_daynr(l_time->year, l_time->month, l_time->day), true);
length = longlong10_to_str(weekday, intbuff, 10) - intbuff;
str->append_with_prefill(intbuff, length, 1, '0');
break;
default:
str->append(*ptr);
break;
}
}
}
return false;
}
/**
@details
Get a array of positive numbers from a string object.
Each number is separated by 1 non digit character
Return error if there is too many numbers.
If there is too few numbers, assume that the numbers are left out
from the high end. This allows one to give:
DAY_TO_SECOND as "D MM:HH:SS", "MM:HH:SS" "HH:SS" or as seconds.
@param args item expression which we convert to an ASCII string
@param str_value string buffer
@param is_negative set to true if interval is prefixed by '-'
@param count count of elements in result array
@param values array of results
@param transform_msec if value is true we suppose
that the last part of string value is microseconds
and we should transform value to six digit value.
For example, '1.1' -> '1.100000'
*/
static bool get_interval_info(Item *args, String *str_value, bool *is_negative,
uint count, ulonglong *values,
bool transform_msec) {
String *res;
if (!(res = args->val_str_ascii(str_value))) return true;
const CHARSET_INFO *cs = res->charset();
const char *str = res->ptr();
const char *end = str + res->length();
str += cs->cset->scan(cs, str, end, MY_SEQ_SPACES);
if (str < end && *str == '-') {
*is_negative = true;
str++;
}
while (str < end && !my_isdigit(cs, *str)) str++;
long msec_length = 0;
for (uint i = 0; i < count; i++) {
longlong value;
const char *start = str;
for (value = 0; str != end && my_isdigit(cs, *str); str++) {
if (value > (LLONG_MAX - 10) / 10) return true;
value = value * 10LL + (longlong)(*str - '0');
}
msec_length = 6 - (str - start);
values[i] = value;
while (str != end && !my_isdigit(cs, *str)) str++;
if (str == end && i != count - 1) {
i++;
/* Change values[0...i-1] -> values[0...count-1] */
const size_t len = sizeof(*values) * i;
memmove(reinterpret_cast<uchar *>(values + count) - len,
reinterpret_cast<uchar *>(values + i) - len, len);
memset(values, 0, sizeof(*values) * (count - i));
break;
}
}
if (transform_msec && msec_length > 0)
values[count - 1] *= (long)log_10_int[msec_length];
return (str != end);
}
/*** Abstract classes ****************************************/
bool Item_temporal_func::check_precision() {
if (decimals > DATETIME_MAX_DECIMALS) {
my_error(ER_TOO_BIG_PRECISION, MYF(0), (int)decimals, func_name(),
DATETIME_MAX_DECIMALS);
return true;
}
return false;
}
/**
Appends function name with argument list or fractional seconds part
to the String str.
@param[in] thd Thread handle
@param[in,out] str String to which the func_name and decimals/
argument list should be appended.
@param[in] query_type Query type
*/
void Item_temporal_func::print(const THD *thd, String *str,
enum_query_type query_type) const {
str->append(func_name());
str->append('(');
// When the functions have arguments specified
if (arg_count) {
print_args(thd, str, 0, query_type);
} else if (decimals) {
/*
For temporal functions like NOW, CURTIME and SYSDATE which can specify
fractional seconds part.
*/
if (unsigned_flag)
str->append_ulonglong(decimals);
else
str->append_longlong(decimals);
}
str->append(')');
}
type_conversion_status Item_temporal_hybrid_func::save_in_field_inner(
Field *field, bool no_conversions) {
if (data_type() == MYSQL_TYPE_TIME) return save_time_in_field(field);
if (is_temporal_type_with_date(data_type())) return save_date_in_field(field);
return Item_str_func::save_in_field_inner(field, no_conversions);
}
my_decimal *Item_temporal_hybrid_func::val_decimal(my_decimal *decimal_value) {
assert(fixed);
if (data_type() == MYSQL_TYPE_TIME)
return val_decimal_from_time(decimal_value);
else if (data_type() == MYSQL_TYPE_DATETIME)
return val_decimal_from_date(decimal_value);
else {
MYSQL_TIME ltime;
my_time_flags_t flags = TIME_FUZZY_DATE;
if (sql_mode & MODE_NO_ZERO_IN_DATE) flags |= TIME_NO_ZERO_IN_DATE;
if (sql_mode & MODE_NO_ZERO_DATE) flags |= TIME_NO_ZERO_DATE;
if (sql_mode & MODE_INVALID_DATES) flags |= TIME_INVALID_DATES;
val_datetime(<ime, flags);
return null_value ? nullptr
: ltime.time_type == MYSQL_TIMESTAMP_TIME
? time2my_decimal(<ime, decimal_value)
: date2my_decimal(<ime, decimal_value);
}
}
bool Item_temporal_hybrid_func::get_date(MYSQL_TIME *ltime,
my_time_flags_t fuzzy_date) {
MYSQL_TIME tm;
if (val_datetime(&tm, fuzzy_date)) {
assert(null_value == true);
return true;
}
if (data_type() == MYSQL_TYPE_TIME || tm.time_type == MYSQL_TIMESTAMP_TIME)
time_to_datetime(current_thd, &tm, ltime);
else
*ltime = tm;
return false;
}
bool Item_temporal_hybrid_func::get_time(MYSQL_TIME *ltime) {
if (val_datetime(ltime, TIME_FUZZY_DATE)) {
assert(null_value == true);
return true;
}
if (data_type() == MYSQL_TYPE_TIME &&
ltime->time_type != MYSQL_TIMESTAMP_TIME)
datetime_to_time(ltime);
return false;
}
String *Item_temporal_hybrid_func::val_str_ascii(String *str) {
assert(fixed);
MYSQL_TIME ltime;
if (val_datetime(<ime, TIME_FUZZY_DATE) ||
(null_value =
my_TIME_to_str(<ime, str,
data_type() == MYSQL_TYPE_STRING
? ltime.second_part ? DATETIME_MAX_DECIMALS : 0
: decimals)))
return nullptr;
/* Check that the returned timestamp type matches to the function type */
assert((data_type() == MYSQL_TYPE_TIME &&
ltime.time_type == MYSQL_TIMESTAMP_TIME) ||
(data_type() == MYSQL_TYPE_DATE &&
ltime.time_type == MYSQL_TIMESTAMP_DATE) ||
(data_type() == MYSQL_TYPE_DATETIME &&
ltime.time_type == MYSQL_TIMESTAMP_DATETIME) ||
data_type() == MYSQL_TYPE_STRING ||
ltime.time_type == MYSQL_TIMESTAMP_NONE);
return str;
}
longlong Item_time_func::val_time_temporal() {
assert(fixed);
MYSQL_TIME ltime;
return get_time(<ime) ? 0LL : TIME_to_longlong_time_packed(ltime);
}
longlong Item_date_func::val_date_temporal() {
assert(fixed);
MYSQL_TIME ltime;
return get_date(<ime, TIME_FUZZY_DATE)
? 0LL
: TIME_to_longlong_date_packed(ltime);
}
longlong Item_datetime_func::val_date_temporal() {
assert(fixed);
MYSQL_TIME ltime;
return get_date(<ime, TIME_FUZZY_DATE)
? 0LL
: TIME_to_longlong_datetime_packed(ltime);
}
bool Item_date_literal::eq_specific(const Item *item) const {
return cached_time.eq(
down_cast<const Item_date_literal *>(item)->cached_time);
}
void Item_date_literal::print(const THD *, String *str, enum_query_type) const {
str->append("DATE'");
str->append(cached_time.cptr());
str->append('\'');
}
bool Item_datetime_literal::eq_specific(const Item *item) const {
return cached_time.eq(
down_cast<const Item_datetime_literal *>(item)->cached_time);
}
void Item_datetime_literal::print(const THD *, String *str,
enum_query_type) const {
str->append("TIMESTAMP'");
str->append(cached_time.cptr());
str->append('\'');
}
bool Item_time_literal::eq_specific(const Item *item) const {
return cached_time.eq(
down_cast<const Item_time_literal *>(item)->cached_time);
}
void Item_time_literal::print(const THD *, String *str, enum_query_type) const {
str->append("TIME'");
str->append(cached_time.cptr());
str->append('\'');
}
bool Item_func_at_time_zone::resolve_type(THD *thd) {
if (check_type()) return true;
if (strcmp(specifier_string(), "+00:00") != 0 &&
(m_is_interval || strcmp(specifier_string(), "UTC") != 0)) {
my_error(ER_UNKNOWN_TIME_ZONE, MYF(0), specifier_string());
return true;
}
return set_time_zone(thd);
}
void Item_func_at_time_zone::print(const THD *thd, String *str,
enum_query_type query_type) const {
args[0]->print(thd, str, query_type);
str->append(" AT TIME ZONE '+00:00'");
}
bool Item_func_at_time_zone::set_time_zone(THD *thd) {
String s(m_specifier_string, strlen(m_specifier_string),