Fix datetime input parsing to accept YYYY-MONTHNAME-DD and related syntaxes,

which had been unintentionally broken by recent changes to tighten up the
DateStyle rules for all-numeric date input.  Add documentation and
regression tests for this, too.

diff --git a/doc/src/sgml/datatype.sgml b/doc/src/sgml/datatype.sgml
index fbd1437..82ae3a2 100644 (file)
--- a/doc/src/sgml/datatype.sgml
+++ b/doc/src/sgml/datatype.sgml
@@ -1,5 +1,5 @@
 <!--
-$Header: /cvsroot/pgsql/doc/src/sgml/datatype.sgml,v 1.130 2003/11/06 22:21:47 tgl Exp $
+$Header: /cvsroot/pgsql/doc/src/sgml/datatype.sgml,v 1.131 2003/11/16 20:29:16 tgl Exp $
 -->
 
  <chapter id="datatype">
@@ -1464,7 +1464,7 @@ SELECT b, char_length(b) FROM test2;
         </row>
         <row>
          <entry>1999-01-08</entry>
-         <entry>ISO 8601, January 8 in any mode
+         <entry>ISO 8601; January 8 in any mode
          (recommended format)</entry>
         </row>
         <row>
@@ -1485,6 +1485,30 @@ SELECT b, char_length(b) FROM test2;
          </entry>
         </row>
         <row>
+         <entry>1999-Jan-08</entry>
+         <entry>January 8 in any mode</entry>
+        </row>
+        <row>
+         <entry>Jan-08-1999</entry>
+         <entry>January 8 in any mode</entry>
+        </row>
+        <row>
+         <entry>08-Jan-1999</entry>
+         <entry>January 8 in any mode</entry>
+        </row>
+        <row>
+         <entry>99-Jan-08</entry>
+         <entry>January 8 in <literal>YMD</> mode, else error</entry>
+        </row>
+        <row>
+         <entry>08-Jan-99</entry>
+         <entry>January 8, except error in <literal>YMD</> mode</entry>
+        </row>
+        <row>
+         <entry>Jan-08-99</entry>
+         <entry>January 8, except error in <literal>YMD</> mode</entry>
+        </row>
+        <row>
          <entry>19990108</entry>
          <entry>ISO 8601; January 8, 1999 in any mode</entry>
         </row>
@@ -1625,7 +1649,7 @@ SELECT b, char_length(b) FROM test2;
          </row>
          <row>
           <entry><literal>zulu</literal></entry>
-          <entry>Military abbreviation for GMT</entry>
+          <entry>Military abbreviation for UTC</entry>
          </row>
          <row>
           <entry><literal>z</literal></entry>

diff --git a/src/backend/utils/adt/datetime.c b/src/backend/utils/adt/datetime.c
index 6471f64..7cc29a2 100644 (file)
--- a/src/backend/utils/adt/datetime.c
+++ b/src/backend/utils/adt/datetime.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *       $Header: /cvsroot/pgsql/src/backend/utils/adt/datetime.c,v 1.118 2003/09/25 06:58:03 petere Exp $
+ *       $Header: /cvsroot/pgsql/src/backend/utils/adt/datetime.c,v 1.119 2003/11/16 20:29:16 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -25,7 +25,7 @@
 #include "utils/guc.h"
 
 
-static int DecodeNumber(int flen, char *field,
+static int DecodeNumber(int flen, char *field, bool haveTextMonth,
                         int fmask, int *tmask,
                         struct tm * tm, fsec_t *fsec, int *is2digits);
 static int DecodeNumberField(int len, char *str,
@@ -924,7 +924,7 @@ DecodeDateTime(char **field, int *ftype, int nf,
        int                     val;
        int                     dterr;
        int                     mer = HR24;
-       int                     haveTextMonth = FALSE;
+       bool            haveTextMonth = FALSE;
        int                     is2digits = FALSE;
        int                     bc = FALSE;
 
@@ -1281,7 +1281,8 @@ DecodeDateTime(char **field, int *ftype, int nf,
                                        /* otherwise it is a single date/time field... */
                                        else
                                        {
-                                               dterr = DecodeNumber(flen, field[i], fmask,
+                                               dterr = DecodeNumber(flen, field[i],
+                                                                                        haveTextMonth, fmask,
                                                                                         &tmask, tm,
                                                                                         fsec, &is2digits);
                                                if (dterr)
@@ -2032,6 +2033,7 @@ DecodeTimeOnly(char **field, int *ftype, int nf,
                                        else
                                        {
                                                dterr = DecodeNumber(flen, field[i],
+                                                                                        FALSE,
                                                                                         (fmask | DTK_DATE_M),
                                                                                         &tmask, tm,
                                                                                         fsec, &is2digits);
@@ -2229,6 +2231,7 @@ DecodeDate(char *str, int fmask, int *tmask, struct tm * tm)
        int                     i,
                                len;
        int                     dterr;
+       bool            haveTextMonth = FALSE;
        int                     bc = FALSE;
        int                     is2digits = FALSE;
        int                     type,
@@ -2283,6 +2286,7 @@ DecodeDate(char *str, int fmask, int *tmask, struct tm * tm)
                        {
                                case MONTH:
                                        tm->tm_mon = val;
+                                       haveTextMonth = TRUE;
                                        break;
 
                                case ADBC:
@@ -2312,7 +2316,7 @@ DecodeDate(char *str, int fmask, int *tmask, struct tm * tm)
                if ((len = strlen(field[i])) <= 0)
                        return DTERR_BAD_FORMAT;
 
-               dterr = DecodeNumber(len, field[i], fmask,
+               dterr = DecodeNumber(len, field[i], haveTextMonth, fmask,
                                                         &dmask, tm,
                                                         &fsec, &is2digits);
                if (dterr)
@@ -2444,7 +2448,7 @@ DecodeTime(char *str, int fmask, int *tmask, struct tm * tm, fsec_t *fsec)
  * Return 0 if okay, a DTERR code if not.
  */
 static int
-DecodeNumber(int flen, char *str, int fmask,
+DecodeNumber(int flen, char *str, bool haveTextMonth, int fmask,
                         int *tmask, struct tm * tm, fsec_t *fsec, int *is2digits)
 {
        int                     val;
@@ -2534,10 +2538,59 @@ DecodeNumber(int flen, char *str, int fmask,
                        tm->tm_mon = val;
                        break;
 
+               case (DTK_M(MONTH)):
+                       if (haveTextMonth)
+                       {
+                               /*
+                                * We are at the first numeric field of a date that included
+                                * a textual month name.  We want to support the variants
+                                * MON-DD-YYYY, DD-MON-YYYY, and YYYY-MON-DD as unambiguous
+                                * inputs.  We will also accept MON-DD-YY or DD-MON-YY in
+                                * either DMY or MDY modes, as well as YY-MON-DD in YMD mode.
+                                */
+                               if (flen >= 3 || DateOrder == DATEORDER_YMD)
+                               {
+                                       *tmask = DTK_M(YEAR);
+                                       tm->tm_year = val;
+                               }
+                               else
+                               {
+                                       *tmask = DTK_M(DAY);
+                                       tm->tm_mday = val;
+                               }
+                       }
+                       else
+                       {
+                               /* Must be at second field of MM-DD-YY */
+                               *tmask = DTK_M(DAY);
+                               tm->tm_mday = val;
+                       }
+                       break;
+
                case (DTK_M(YEAR) | DTK_M(MONTH)):
-                       /* Must be at third field of YY-MM-DD */
-                       *tmask = DTK_M(DAY);
-                       tm->tm_mday = val;
+                       if (haveTextMonth)
+                       {
+                               /* Need to accept DD-MON-YYYY even in YMD mode */
+                               if (flen >= 3 && *is2digits)
+                               {
+                                       /* Guess that first numeric field is day was wrong */
+                                       *tmask = DTK_M(DAY); /* YEAR is already set */
+                                       tm->tm_mday = tm->tm_year;
+                                       tm->tm_year = val;
+                                       *is2digits = FALSE;
+                               }
+                               else
+                               {
+                                       *tmask = DTK_M(DAY);
+                                       tm->tm_mday = val;
+                               }
+                       }
+                       else
+                       {
+                               /* Must be at third field of YY-MM-DD */
+                               *tmask = DTK_M(DAY);
+                               tm->tm_mday = val;
+                       }
                        break;
 
                case (DTK_M(DAY)):
@@ -2552,12 +2605,6 @@ DecodeNumber(int flen, char *str, int fmask,
                        tm->tm_year = val;
                        break;
 
-               case (DTK_M(MONTH)):
-                       /* Must be at second field of MM-DD-YY */
-                       *tmask = DTK_M(DAY);
-                       tm->tm_mday = val;
-                       break;
-
                case (DTK_M(YEAR) | DTK_M(MONTH) | DTK_M(DAY)):
                        /* we have all the date, so it must be a time field */
                        dterr = DecodeNumberField(flen, str, fmask,
@@ -2574,10 +2621,10 @@ DecodeNumber(int flen, char *str, int fmask,
 
        /*
         * When processing a year field, mark it for adjustment if it's
-        * exactly two digits.
+        * only one or two digits.
         */
        if (*tmask == DTK_M(YEAR))
-               *is2digits = (flen == 2);
+               *is2digits = (flen <= 2);
 
        return 0;
 }

diff --git a/src/test/regress/expected/date.out b/src/test/regress/expected/date.out
index 84bdcf2..20ffaf1 100644 (file)
--- a/src/test/regress/expected/date.out
+++ b/src/test/regress/expected/date.out
@@ -63,6 +63,683 @@ SELECT f1 AS "Three" FROM DATE_TBL
 (3 rows)
 
 --
+-- Check all the documented input formats
+--
+SET datestyle TO iso;  -- display results in ISO
+SET datestyle TO ymd;
+SELECT date 'January 8, 1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999-01-08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999-01-18';
+    date    
+------------
+ 1999-01-18
+(1 row)
+
+SELECT date '1/8/1999';
+ERROR:  date/time field value out of range: "1/8/1999"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '1/18/1999';
+ERROR:  date/time field value out of range: "1/18/1999"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '18/1/1999';
+ERROR:  date/time field value out of range: "18/1/1999"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '01/02/03';
+    date    
+------------
+ 2001-02-03
+(1 row)
+
+SELECT date '19990108';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '990108';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999.008';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'J2451187';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'January 8, 99 BC';
+ERROR:  date/time field value out of range: "January 8, 99 BC"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '99-Jan-08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999-Jan-08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08-Jan-99';
+ERROR:  date/time field value out of range: "08-Jan-99"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '08-Jan-1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'Jan-08-99';
+ERROR:  date/time field value out of range: "Jan-08-99"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date 'Jan-08-1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '99-08-Jan';
+ERROR:  invalid input syntax for type date: "99-08-Jan"
+SELECT date '1999-08-Jan';
+ERROR:  invalid input syntax for type date: "1999-08-Jan"
+SELECT date '99 Jan 08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999 Jan 08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08 Jan 99';
+ERROR:  date/time field value out of range: "08 Jan 99"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '08 Jan 1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'Jan 08 99';
+ERROR:  date/time field value out of range: "Jan 08 99"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date 'Jan 08 1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '99 08 Jan';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999 08 Jan';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '99-01-08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999-01-08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08-01-99';
+ERROR:  date/time field value out of range: "08-01-99"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '08-01-1999';
+ERROR:  date/time field value out of range: "08-01-1999"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '01-08-99';
+ERROR:  date/time field value out of range: "01-08-99"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '01-08-1999';
+ERROR:  date/time field value out of range: "01-08-1999"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '99-08-01';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '1999-08-01';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '99 01 08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999 01 08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08 01 99';
+ERROR:  date/time field value out of range: "08 01 99"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '08 01 1999';
+ERROR:  date/time field value out of range: "08 01 1999"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '01 08 99';
+ERROR:  date/time field value out of range: "01 08 99"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '01 08 1999';
+ERROR:  date/time field value out of range: "01 08 1999"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '99 08 01';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '1999 08 01';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SET datestyle TO dmy;
+SELECT date 'January 8, 1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999-01-08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999-01-18';
+    date    
+------------
+ 1999-01-18
+(1 row)
+
+SELECT date '1/8/1999';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '1/18/1999';
+ERROR:  date/time field value out of range: "1/18/1999"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '18/1/1999';
+    date    
+------------
+ 1999-01-18
+(1 row)
+
+SELECT date '01/02/03';
+    date    
+------------
+ 2003-02-01
+(1 row)
+
+SELECT date '19990108';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '990108';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999.008';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'J2451187';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'January 8, 99 BC';
+     date      
+---------------
+ 0099-01-08 BC
+(1 row)
+
+SELECT date '99-Jan-08';
+ERROR:  date/time field value out of range: "99-Jan-08"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '1999-Jan-08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08-Jan-99';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08-Jan-1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'Jan-08-99';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'Jan-08-1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '99-08-Jan';
+ERROR:  invalid input syntax for type date: "99-08-Jan"
+SELECT date '1999-08-Jan';
+ERROR:  invalid input syntax for type date: "1999-08-Jan"
+SELECT date '99 Jan 08';
+ERROR:  date/time field value out of range: "99 Jan 08"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '1999 Jan 08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08 Jan 99';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08 Jan 1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'Jan 08 99';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'Jan 08 1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '99 08 Jan';
+ERROR:  invalid input syntax for type date: "99 08 Jan"
+SELECT date '1999 08 Jan';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '99-01-08';
+ERROR:  date/time field value out of range: "99-01-08"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '1999-01-08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08-01-99';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08-01-1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '01-08-99';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '01-08-1999';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '99-08-01';
+ERROR:  date/time field value out of range: "99-08-01"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '1999-08-01';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '99 01 08';
+ERROR:  date/time field value out of range: "99 01 08"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '1999 01 08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08 01 99';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08 01 1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '01 08 99';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '01 08 1999';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '99 08 01';
+ERROR:  date/time field value out of range: "99 08 01"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '1999 08 01';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SET datestyle TO mdy;
+SELECT date 'January 8, 1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999-01-08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999-01-18';
+    date    
+------------
+ 1999-01-18
+(1 row)
+
+SELECT date '1/8/1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1/18/1999';
+    date    
+------------
+ 1999-01-18
+(1 row)
+
+SELECT date '18/1/1999';
+ERROR:  date/time field value out of range: "18/1/1999"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '01/02/03';
+    date    
+------------
+ 2003-01-02
+(1 row)
+
+SELECT date '19990108';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '990108';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '1999.008';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'J2451187';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'January 8, 99 BC';
+     date      
+---------------
+ 0099-01-08 BC
+(1 row)
+
+SELECT date '99-Jan-08';
+ERROR:  date/time field value out of range: "99-Jan-08"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '1999-Jan-08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08-Jan-99';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08-Jan-1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'Jan-08-99';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'Jan-08-1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '99-08-Jan';
+ERROR:  invalid input syntax for type date: "99-08-Jan"
+SELECT date '1999-08-Jan';
+ERROR:  invalid input syntax for type date: "1999-08-Jan"
+SELECT date '99 Jan 08';
+ERROR:  invalid input syntax for type date: "99 Jan 08"
+SELECT date '1999 Jan 08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08 Jan 99';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08 Jan 1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'Jan 08 99';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date 'Jan 08 1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '99 08 Jan';
+ERROR:  invalid input syntax for type date: "99 08 Jan"
+SELECT date '1999 08 Jan';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '99-01-08';
+ERROR:  date/time field value out of range: "99-01-08"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '1999-01-08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08-01-99';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '08-01-1999';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '01-08-99';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '01-08-1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '99-08-01';
+ERROR:  date/time field value out of range: "99-08-01"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '1999-08-01';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '99 01 08';
+ERROR:  date/time field value out of range: "99 01 08"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '1999 01 08';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '08 01 99';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '08 01 1999';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+SELECT date '01 08 99';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '01 08 1999';
+    date    
+------------
+ 1999-01-08
+(1 row)
+
+SELECT date '99 08 01';
+ERROR:  date/time field value out of range: "99 08 01"
+HINT:  Perhaps you need a different "datestyle" setting.
+SELECT date '1999 08 01';
+    date    
+------------
+ 1999-08-01
+(1 row)
+
+RESET datestyle;
+--
 -- Simple math
 -- Leave most of it for the horology tests
 --

diff --git a/src/test/regress/sql/date.sql b/src/test/regress/sql/date.sql
index 9e98041..10bd87c 100644 (file)
--- a/src/test/regress/sql/date.sql
+++ b/src/test/regress/sql/date.sql
@@ -29,6 +29,166 @@ SELECT f1 AS "Three" FROM DATE_TBL
   WHERE f1 BETWEEN '2000-01-01' AND '2001-01-01';
 
 --
+-- Check all the documented input formats
+--
+SET datestyle TO iso;  -- display results in ISO
+
+SET datestyle TO ymd;
+
+SELECT date 'January 8, 1999';
+SELECT date '1999-01-08';
+SELECT date '1999-01-18';
+SELECT date '1/8/1999';
+SELECT date '1/18/1999';
+SELECT date '18/1/1999';
+SELECT date '01/02/03';
+SELECT date '19990108';
+SELECT date '990108';
+SELECT date '1999.008';
+SELECT date 'J2451187';
+SELECT date 'January 8, 99 BC';
+
+SELECT date '99-Jan-08';
+SELECT date '1999-Jan-08';
+SELECT date '08-Jan-99';
+SELECT date '08-Jan-1999';
+SELECT date 'Jan-08-99';
+SELECT date 'Jan-08-1999';
+SELECT date '99-08-Jan';
+SELECT date '1999-08-Jan';
+
+SELECT date '99 Jan 08';
+SELECT date '1999 Jan 08';
+SELECT date '08 Jan 99';
+SELECT date '08 Jan 1999';
+SELECT date 'Jan 08 99';
+SELECT date 'Jan 08 1999';
+SELECT date '99 08 Jan';
+SELECT date '1999 08 Jan';
+
+SELECT date '99-01-08';
+SELECT date '1999-01-08';
+SELECT date '08-01-99';
+SELECT date '08-01-1999';
+SELECT date '01-08-99';
+SELECT date '01-08-1999';
+SELECT date '99-08-01';
+SELECT date '1999-08-01';
+
+SELECT date '99 01 08';
+SELECT date '1999 01 08';
+SELECT date '08 01 99';
+SELECT date '08 01 1999';
+SELECT date '01 08 99';
+SELECT date '01 08 1999';
+SELECT date '99 08 01';
+SELECT date '1999 08 01';
+
+SET datestyle TO dmy;
+
+SELECT date 'January 8, 1999';
+SELECT date '1999-01-08';
+SELECT date '1999-01-18';
+SELECT date '1/8/1999';
+SELECT date '1/18/1999';
+SELECT date '18/1/1999';
+SELECT date '01/02/03';
+SELECT date '19990108';
+SELECT date '990108';
+SELECT date '1999.008';
+SELECT date 'J2451187';
+SELECT date 'January 8, 99 BC';
+
+SELECT date '99-Jan-08';
+SELECT date '1999-Jan-08';
+SELECT date '08-Jan-99';
+SELECT date '08-Jan-1999';
+SELECT date 'Jan-08-99';
+SELECT date 'Jan-08-1999';
+SELECT date '99-08-Jan';
+SELECT date '1999-08-Jan';
+
+SELECT date '99 Jan 08';
+SELECT date '1999 Jan 08';
+SELECT date '08 Jan 99';
+SELECT date '08 Jan 1999';
+SELECT date 'Jan 08 99';
+SELECT date 'Jan 08 1999';
+SELECT date '99 08 Jan';
+SELECT date '1999 08 Jan';
+
+SELECT date '99-01-08';
+SELECT date '1999-01-08';
+SELECT date '08-01-99';
+SELECT date '08-01-1999';
+SELECT date '01-08-99';
+SELECT date '01-08-1999';
+SELECT date '99-08-01';
+SELECT date '1999-08-01';
+
+SELECT date '99 01 08';
+SELECT date '1999 01 08';
+SELECT date '08 01 99';
+SELECT date '08 01 1999';
+SELECT date '01 08 99';
+SELECT date '01 08 1999';
+SELECT date '99 08 01';
+SELECT date '1999 08 01';
+
+SET datestyle TO mdy;
+
+SELECT date 'January 8, 1999';
+SELECT date '1999-01-08';
+SELECT date '1999-01-18';
+SELECT date '1/8/1999';
+SELECT date '1/18/1999';
+SELECT date '18/1/1999';
+SELECT date '01/02/03';
+SELECT date '19990108';
+SELECT date '990108';
+SELECT date '1999.008';
+SELECT date 'J2451187';
+SELECT date 'January 8, 99 BC';
+
+SELECT date '99-Jan-08';
+SELECT date '1999-Jan-08';
+SELECT date '08-Jan-99';
+SELECT date '08-Jan-1999';
+SELECT date 'Jan-08-99';
+SELECT date 'Jan-08-1999';
+SELECT date '99-08-Jan';
+SELECT date '1999-08-Jan';
+
+SELECT date '99 Jan 08';
+SELECT date '1999 Jan 08';
+SELECT date '08 Jan 99';
+SELECT date '08 Jan 1999';
+SELECT date 'Jan 08 99';
+SELECT date 'Jan 08 1999';
+SELECT date '99 08 Jan';
+SELECT date '1999 08 Jan';
+
+SELECT date '99-01-08';
+SELECT date '1999-01-08';
+SELECT date '08-01-99';
+SELECT date '08-01-1999';
+SELECT date '01-08-99';
+SELECT date '01-08-1999';
+SELECT date '99-08-01';
+SELECT date '1999-08-01';
+
+SELECT date '99 01 08';
+SELECT date '1999 01 08';
+SELECT date '08 01 99';
+SELECT date '08 01 1999';
+SELECT date '01 08 99';
+SELECT date '01 08 1999';
+SELECT date '99 08 01';
+SELECT date '1999 08 01';
+
+RESET datestyle;
+
+--
 -- Simple math
 -- Leave most of it for the horology tests
 --