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Postgres: No namespace in INDEX, CONSTRAINT names

Browse Source 
src/libmdb/backend.c:mdb_print_indexes() and
src/libmdb/backend.c:mdb_get_relationships(): In PostgreSQL the INDEX
names explicitly must not have a namespace name on them; they are always
created in the namespace of the table.  See:

http://www.postgresql.org/docs/current/static/sql-createindex.html

which says: "The name of the index to be created. No schema name can be
included here; the index is always created in the same schema as
its parent table."

By observation the same is true for CONSTRAINT names; they are refused
if the namespace is included before them.

Also omit the namespace from the FOREIGN KEY constraint _column_ names
on PostgreSQL (it's not clear that the _column_ names should ever be
namespaced, but behaviour should currently be unchanged for databases
other than PostgreSQL).
This commit is contained in:
Ewen McNeill 2016-04-07 08:37:50 +12:00 committed by Smartco Map Developer
parent 307cc50dc0
commit c13bcc75a7
1 changed files with 59 additions and 4 deletions
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63
src/libmdb/backend.c
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@ -558,7 +558,20 @@ mdb_print_indexes(FILE* outfile, MdbTableDef *table, char *dbnamespace)
continue;
index_name = mdb_get_index_name(backend, table, idx);
quoted_name = mdb->default_backend->quote_schema_name(dbnamespace, index_name);
switch (backend) {
case MDB_BACKEND_POSTGRES:
/* PostgreSQL index and constraint names are
* never namespaced in DDL (they are always
* created in same namespace as table), so
* omit namespace.
*/
quoted_name = mdb->default_backend->quote_schema_name(NULL, index_name);
break;
default:
quoted_name = mdb->default_backend->quote_schema_name(dbnamespace, index_name);
}
if (idx->index_type==1) {
switch (backend) {
case MDB_BACKEND_ORACLE:
@ -688,12 +701,32 @@ mdb_get_relationships(MdbHandle *mdb, const gchar *dbnamespace, const char* tabl
}
quoted_table_1 = mdb->default_backend->quote_schema_name(dbnamespace, bound[1]);
quoted_column_1 = mdb->default_backend->quote_schema_name(dbnamespace, bound[0]);
quoted_table_2 = mdb->default_backend->quote_schema_name(dbnamespace, bound[3]);
quoted_column_2 = mdb->default_backend->quote_schema_name(dbnamespace, bound[2]);
grbit = atoi(bound[4]);
constraint_name = g_strconcat(bound[1], "_", bound[0], "_fk", NULL);
quoted_constraint_name = mdb->default_backend->quote_schema_name(dbnamespace, constraint_name);
switch (backend) {
case MDB_BACKEND_POSTGRES:
/* PostgreSQL index and constraint names are
* never namespaced in DDL (they are always
* created in same namespace as table), so
* omit namespace. Nor should column names
* be namespaced.
*/
quoted_constraint_name = mdb->default_backend->quote_schema_name(NULL, constraint_name);
quoted_column_1 = mdb->default_backend->quote_schema_name(NULL, bound[0]);
quoted_column_2 = mdb->default_backend->quote_schema_name(NULL, bound[2]);
break;
default:
/* Other databases, namespace constraint and
* column names.
*/
quoted_constraint_name = mdb->default_backend->quote_schema_name(dbnamespace, constraint_name);
quoted_column_1 = mdb->default_backend->quote_schema_name(dbnamespace, bound[0]);
quoted_column_2 = mdb->default_backend->quote_schema_name(dbnamespace, bound[2]);
break;
}
g_free(constraint_name);
if (grbit & 0x00000002) {
@ -727,6 +760,28 @@ mdb_get_relationships(MdbHandle *mdb, const gchar *dbnamespace, const char* tabl
break;
}
/* On some databases (eg PostgreSQL) we also want to set
* the constraints to be optionally deferrable, to
* facilitate out of order bulk loading.
*/
switch (backend) {
case MDB_BACKEND_POSTGRES:
{
gchar *add_constraint;
add_constraint = text;
text = g_strconcat(add_constraint,
"ALTER TABLE ", quoted_table_1,
" ALTER CONSTRAINT ",
quoted_constraint_name,
" DEFERRABLE"
" INITIALLY IMMEDIATE;\n",
NULL);
g_free(add_constraint);
}
default:
break;
}
}
g_free(quoted_table_1);
g_free(quoted_column_1);