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The cstring datatype can now be copied, passed around, etc. The typlen

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value '-2' is used to indicate a variable-width type whose width is
computed as strlen(datum)+1.  Everything that looks at typlen is updated
except for array support, which Joe Conway is working on; at the moment
it wouldn't work to try to create an array of cstring.
This commit is contained in:
Tom Lane
2002-08-24 15:00:47 +00:00
parent cf4d885c67
commit 976246cc7e
23 changed files with 260 additions and 198 deletions
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15
src/backend/commands/copy.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/copy.c,v 1.166 2002/08/22 00:01:42 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/copy.c,v 1.167 2002/08/24 15:00:46 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -567,6 +567,8 @@ CopyTo(Relation rel, List *attnumlist, bool binary, bool oids,
elog(ERROR, "COPY: couldn't lookup info for type %u",
attr[attnum-1]->atttypid);
fmgr_info(out_func_oid, &out_functions[attnum-1]);
if (binary && attr[attnum-1]->attlen == -2)
elog(ERROR, "COPY BINARY: cstring not supported");
}
if (binary)
@ -820,9 +822,16 @@ CopyFrom(Relation rel, List *attnumlist, bool binary, bool oids,
fmgr_info(in_func_oid, &in_functions[i]);
elements[i] = GetTypeElement(attr[i]->atttypid);
/* if column not specified, use default value if one exists */
if (!intMember(i + 1, attnumlist))
if (intMember(i + 1, attnumlist))
{
/* attribute is to be copied */
if (binary && attr[i]->attlen == -2)
elog(ERROR, "COPY BINARY: cstring not supported");
}
else
{
/* attribute is NOT to be copied */
/* use default value if one exists */
defexprs[num_defaults] = build_column_default(rel, i + 1);
if (defexprs[num_defaults] != NULL)
{