mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-08-21 17:53:22 +02:00
TO_DATE() and PgSQL extension FROM_CHAR(). TO_CHAR() routine allow formating text output with a datetime values: SELECT TO_CHAR('now'::datetime, '"Now is: "HH24:MI:SS'); to_char ---------------- Now is: 21:04:10 FROM_CHAR() routine allow convert text to a datetime: SELECT FROM_CHAR('September 1999 10:20:30', 'FMMonth YYYY HH:MI:SS'); from_char ----------------------------- Wed Sep 01 10:20:30 1999 CEST TO_DATE() is equal with FROM_CHAR(), but output a Date only: SELECT TO_DATE('September 1999 10:20:30', 'FMMonth YYYY HH:MI:SS'); to_date ---------- 09-01-1999 In attache is compressed dir for the contrib. All is prepared, but I'am not sure if Makefile is good (probably yes). Comments & suggestions ? Thomas, thank you for your good advices. Karel ------------------------------------------------------------------------------ Karel Zak <zakkr@zf.jcu.cz> http://home.zf.jcu.cz/~zakkr/
71 lines
1.1 KiB
C
71 lines
1.1 KiB
C
|
|
#include <stdio.h>
|
|
#include <errno.h>
|
|
#include <ctype.h>
|
|
#include <stdlib.h>
|
|
|
|
|
|
char *month[] = {
|
|
"Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec",NULL
|
|
};
|
|
|
|
char *day[] = { "Sun","Mon","Tue","Wed","Thu","Fri","Sat", NULL };
|
|
|
|
int num(FILE *f, int min, int max)
|
|
{
|
|
int x, y, one;
|
|
|
|
one = x = fgetc(f);
|
|
|
|
|
|
if (x < min)
|
|
x = min;
|
|
else if (x > max) {
|
|
while(x > max)
|
|
x /= 2;
|
|
return x;
|
|
}
|
|
|
|
do {
|
|
y = fgetc(f);
|
|
if ((x+y) > max)
|
|
return x;
|
|
x += y;
|
|
} while(--one > 0);
|
|
|
|
return x;
|
|
}
|
|
|
|
int main(int argc, char **argv)
|
|
{
|
|
FILE *f;
|
|
int count;
|
|
|
|
if (argc < 5) {
|
|
printf("\nUsage: %s <randfile> <num> <prefix> <postfix>\n", argv[0]);
|
|
printf("\n(C) Karel Zak - Zakkr 1999\n\n");
|
|
exit(1);
|
|
}
|
|
|
|
if ((f = fopen(argv[1], "r")) == NULL) {
|
|
perror(argv[1]);
|
|
exit(1);
|
|
}
|
|
|
|
count = atoi(argv[2]);
|
|
|
|
for(; count > 0; --count) {
|
|
fprintf(stdout, "%s%s %02d %s %02d:%02d:%02d %d%s\n",
|
|
argv[3],
|
|
day[ num(f, 0, 6) ],
|
|
num(f, 1, 28),
|
|
month[ num(f, 0, 11) ],
|
|
num(f, 0, 23),
|
|
num(f, 0, 59),
|
|
num(f, 0, 59),
|
|
num(f, 0, 9999),
|
|
argv[4]
|
|
);
|
|
}
|
|
exit(0);
|
|
} |