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I've hacked up pg_dump so that it generates CONSTRAINT and CHECK

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syntax that can be read back in with psql.  I did this by adding
a
 "-c" switch that controls moving the CONTSTRAINT statements inside
the CREATE TABLE statements and adding () around the CHECK arguments.
Here's diffs against the 6.3.2 version of pg_dump.c.

ccb
This commit is contained in:
Bruce Momjian 1998-06-16 06:52:15 +00:00
parent 8d8bcda253
commit 32eef5ad1e
1 changed files with 30 additions and 5 deletions
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35
src/bin/pg_dump/pg_dump.c
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@ -21,7 +21,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/bin/pg_dump/pg_dump.c,v 1.72 1998/06/15 19:30:01 momjian Exp $
* $Header: /cvsroot/pgsql/src/bin/pg_dump/pg_dump.c,v 1.73 1998/06/16 06:52:15 momjian Exp $
*
* Modifications - 6/10/96 - dave@bensoft.com - version 1.13.dhb
*
@ -110,6 +110,7 @@ int dumpData; /* dump data using proper insert strings */
int attrNames; /* put attr names into insert strings */
int schemaOnly;
int dataOnly;
int compatConstraint;
char g_opaque_type[10]; /* name for the opaque type */
@ -125,6 +126,8 @@ usage(const char *progname)
"usage: %s [options] dbname\n", progname);
fprintf(stderr,
"\t -a \t\t dump out only the data, no schema\n");
fprintf(stderr,
"\t -c \t\t generate pgsql-compatible CONSTRAINT syntax\n");
fprintf(stderr,
"\t -d \t\t dump data as proper insert strings\n");
fprintf(stderr,
@ -550,17 +553,21 @@ main(int argc, char **argv)
g_comment_end[0] = '\0';
strcpy(g_opaque_type, "opaque");
dataOnly = schemaOnly = dumpData = attrNames = 0;
compatConstraint = dataOnly = schemaOnly = dumpData = attrNames = 0;
progname = *argv;
while ((c = getopt(argc, argv, "adDf:h:op:st:vzu")) != EOF)
while ((c = getopt(argc, argv, "acdDf:h:op:st:vzu")) != EOF)
{
switch (c)
{
case 'a': /* Dump data only */
dataOnly = 1;
break;
case 'c': /* generate constraint syntax that
can be read back into postgreSQL */
compatConstraint = 1;
break;
case 'd': /* dump data as proper insert strings */
dumpData = 1;
break;
@ -1491,7 +1498,12 @@ getTables(int *numTables, FuncInfo *finfo, int numFuncs)
query[0] = 0;
if (name[0] != '$')
sprintf(query, "CONSTRAINT %s ", name);
sprintf(query, "%sCHECK %s", query, expr);
if( compatConstraint ) {
sprintf(query, "%sCHECK (%s)", query, expr);
}
else {
sprintf(query, "%sCHECK %s", query, expr);
}
tblinfo[i].check_expr[i2] = strdup(query);
}
PQclear(res2);
@ -2509,6 +2521,17 @@ dumpTables(FILE *fout, TableInfo *tblinfo, int numTables,
}
}
if( compatConstraint ) {
/* put the CONSTRAINTS inside the table def */
for (k = 0; k < tblinfo[i].ncheck; k++)
{
sprintf(q, "%s%s %s",
q,
(actual_atts + k > 0) ? ", " : "",
tblinfo[i].check_expr[k]);
}
}
strcat(q, ")");
if (numParents > 0)
@ -2524,8 +2547,9 @@ dumpTables(FILE *fout, TableInfo *tblinfo, int numTables,
strcat(q, ")");
}
if (tblinfo[i].ncheck > 0)
if( !compatConstraint )
{
/* put the CONSTRAINT defs outside the table def */
for (k = 0; k < tblinfo[i].ncheck; k++)
{
sprintf(q, "%s%s %s",
@ -2534,6 +2558,7 @@ dumpTables(FILE *fout, TableInfo *tblinfo, int numTables,
tblinfo[i].check_expr[k]);
}
}
strcat(q, ";\n");
fputs(q, fout);
if (acls)