Add --if-exists option to dropdb and dropuser.

Josh Kupershmidt, with some further editing by me.

diff --git a/doc/src/sgml/ref/dropdb.sgml b/doc/src/sgml/ref/dropdb.sgml
index e20bcdb53f43c424478108811cd2fabf2667f366..aedfa580751babc774439bafd855c5743cb55937 100644 (file)
--- a/doc/src/sgml/ref/dropdb.sgml
+++ b/doc/src/sgml/ref/dropdb.sgml
@@ -86,6 +86,16 @@ PostgreSQL documentation
       
      
 
+     
+      --if-exists
+      
+       
+       Do not throw an error if the database does not exist. A notice is issued
+       in this case.
+       
+      
+     
+
      
        -V
        --version

diff --git a/doc/src/sgml/ref/dropuser.sgml b/doc/src/sgml/ref/dropuser.sgml
index c158103913c491cbca49b063a0abf4595bdd8a05..c6424b43bb575a78e82fd09ca174eaf5ae793ade 100644 (file)
--- a/doc/src/sgml/ref/dropuser.sgml
+++ b/doc/src/sgml/ref/dropuser.sgml
@@ -88,6 +88,16 @@ PostgreSQL documentation
       
      
 
+     
+      --if-exists
+      
+       
+        Do not throw an error if the database does not exist. A notice is
+        issued in this case.
+       
+      
+     
+
      
        -V
        --version

diff --git a/src/bin/scripts/dropdb.c b/src/bin/scripts/dropdb.c
index 4cec63ec8e2985eb5f22f2719d16ab5f96955151..0e6749efec0e2e1f23dcc5a1a5fb3d2882d58e50 100644 (file)
--- a/src/bin/scripts/dropdb.c
+++ b/src/bin/scripts/dropdb.c
@@ -21,6 +21,8 @@ static void help(const char *progname);
 int
 main(int argc, char *argv[])
 {
+   static int      if_exists = 0;
+
    static struct option long_options[] = {
        {"host", required_argument, NULL, 'h'},
        {"port", required_argument, NULL, 'p'},
@@ -29,6 +31,7 @@ main(int argc, char *argv[])
        {"password", no_argument, NULL, 'W'},
        {"echo", no_argument, NULL, 'e'},
        {"interactive", no_argument, NULL, 'i'},
+       {"if-exists", no_argument, &if_exists, 1},
        {NULL, 0, NULL, 0}
    };
 
@@ -79,6 +82,9 @@ main(int argc, char *argv[])
            case 'i':
                interactive = true;
                break;
+           case 0:
+               /* this covers the long options */
+               break;
            default:
                fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
                exit(1);
@@ -110,8 +116,8 @@ main(int argc, char *argv[])
 
    initPQExpBuffer(&sql);
 
-   appendPQExpBuffer(&sql, "DROP DATABASE %s;\n",
-                     fmtId(dbname));
+   appendPQExpBuffer(&sql, "DROP DATABASE %s%s;\n",
+                     (if_exists ? "IF EXISTS " : ""), fmtId(dbname));
 
    /*
     * Connect to the 'postgres' database by default, except have the
@@ -146,6 +152,7 @@ help(const char *progname)
    printf(_("\nOptions:\n"));
    printf(_("  -e, --echo                show the commands being sent to the server\n"));
    printf(_("  -i, --interactive         prompt before deleting anything\n"));
+   printf(_("  --if-exists               don't report error if database doesn't exist\n"));
    printf(_("  --help                    show this help, then exit\n"));
    printf(_("  --version                 output version information, then exit\n"));
    printf(_("\nConnection options:\n"));

diff --git a/src/bin/scripts/dropuser.c b/src/bin/scripts/dropuser.c
index 0949a5eefe2c0a47afee1d439699b4cc4b83f296..bfd5b1cfd5a551c482758505331dc82c537447ba 100644 (file)
--- a/src/bin/scripts/dropuser.c
+++ b/src/bin/scripts/dropuser.c
@@ -21,6 +21,8 @@ static void help(const char *progname);
 int
 main(int argc, char *argv[])
 {
+   static int  if_exists = 0;
+
    static struct option long_options[] = {
        {"host", required_argument, NULL, 'h'},
        {"port", required_argument, NULL, 'p'},
@@ -29,6 +31,7 @@ main(int argc, char *argv[])
        {"password", no_argument, NULL, 'W'},
        {"echo", no_argument, NULL, 'e'},
        {"interactive", no_argument, NULL, 'i'},
+       {"if-exists", no_argument, &if_exists, 1},
        {NULL, 0, NULL, 0}
    };
 
@@ -79,6 +82,9 @@ main(int argc, char *argv[])
            case 'i':
                interactive = true;
                break;
+           case 0:
+               /* this covers the long options */
+               break;
            default:
                fprintf(stderr, _("Try \"%s --help\" for more information.\n"), progname);
                exit(1);
@@ -110,7 +116,8 @@ main(int argc, char *argv[])
    }
 
    initPQExpBuffer(&sql);
-   appendPQExpBuffer(&sql, "DROP ROLE %s;\n", fmtId(dropuser));
+   appendPQExpBuffer(&sql, "DROP ROLE %s%s;\n",
+                     (if_exists ? "IF EXISTS " : ""), fmtId(dropuser));
 
    conn = connectDatabase("postgres", host, port, username, prompt_password, progname);
 
@@ -141,6 +148,7 @@ help(const char *progname)
    printf(_("\nOptions:\n"));
    printf(_("  -e, --echo                show the commands being sent to the server\n"));
    printf(_("  -i, --interactive         prompt before deleting anything\n"));
+   printf(_("  --if-exists               don't report error if user doesn't exist\n"));
    printf(_("  --help                    show this help, then exit\n"));
    printf(_("  --version                 output version information, then exit\n"));
    printf(_("\nConnection options:\n"));