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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:19:15 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-04 12:19:15 +0000 |
commit | 6eb9c5a5657d1fe77b55cc261450f3538d35a94d (patch) | |
tree | 657d8194422a5daccecfd42d654b8a245ef7b4c8 /src/include/catalog/pg_depend.h | |
parent | Initial commit. (diff) | |
download | postgresql-13-6eb9c5a5657d1fe77b55cc261450f3538d35a94d.tar.xz postgresql-13-6eb9c5a5657d1fe77b55cc261450f3538d35a94d.zip |
Adding upstream version 13.4.upstream/13.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/include/catalog/pg_depend.h')
-rw-r--r-- | src/include/catalog/pg_depend.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/src/include/catalog/pg_depend.h b/src/include/catalog/pg_depend.h new file mode 100644 index 0000000..ccf0a98 --- /dev/null +++ b/src/include/catalog/pg_depend.h @@ -0,0 +1,73 @@ +/*------------------------------------------------------------------------- + * + * pg_depend.h + * definition of the "dependency" system catalog (pg_depend) + * + * pg_depend has no preloaded contents, so there is no pg_depend.dat + * file; system-defined dependencies are loaded into it during a late stage + * of the initdb process. + * + * NOTE: we do not represent all possible dependency pairs in pg_depend; + * for example, there's not much value in creating an explicit dependency + * from an attribute to its relation. Usually we make a dependency for + * cases where the relationship is conditional rather than essential + * (for example, not all triggers are dependent on constraints, but all + * attributes are dependent on relations) or where the dependency is not + * convenient to find from the contents of other catalogs. + * + * + * Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group + * Portions Copyright (c) 1994, Regents of the University of California + * + * src/include/catalog/pg_depend.h + * + * NOTES + * The Catalog.pm module reads this file and derives schema + * information. + * + *------------------------------------------------------------------------- + */ +#ifndef PG_DEPEND_H +#define PG_DEPEND_H + +#include "catalog/genbki.h" +#include "catalog/pg_depend_d.h" + +/* ---------------- + * pg_depend definition. cpp turns this into + * typedef struct FormData_pg_depend + * ---------------- + */ +CATALOG(pg_depend,2608,DependRelationId) +{ + /* + * Identification of the dependent (referencing) object. + * + * These fields are all zeroes for a DEPENDENCY_PIN entry. + */ + Oid classid; /* OID of table containing object */ + Oid objid; /* OID of object itself */ + int32 objsubid; /* column number, or 0 if not used */ + + /* + * Identification of the independent (referenced) object. + */ + Oid refclassid; /* OID of table containing object */ + Oid refobjid; /* OID of object itself */ + int32 refobjsubid; /* column number, or 0 if not used */ + + /* + * Precise semantics of the relationship are specified by the deptype + * field. See DependencyType in catalog/dependency.h. + */ + char deptype; /* see codes in dependency.h */ +} FormData_pg_depend; + +/* ---------------- + * Form_pg_depend corresponds to a pointer to a row with + * the format of pg_depend relation. + * ---------------- + */ +typedef FormData_pg_depend *Form_pg_depend; + +#endif /* PG_DEPEND_H */ |