2c2253f75e
originally defined. This is recognized by the fact that the column has a dependency on a sequence. For columns that happen to have a default which uses a pre exising sequence the dependency is the other way around.
48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
#include "PgAttributeContainer.h"
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#include "Pgsql_Col.h"
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#include "PgDatabaseCatalog.h"
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//SELECT attname, pg_get_expr(adbin, adrelid) AS def_value
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//FROM pg_attribute
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// JOIN pg_attrdef ON attrelid=adrelid AND attnum=adnum
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//WHERE atthasdef=true
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std::string PgAttributeContainer::getLoadQuery() const
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{
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std::string q = R"__(
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SELECT attrelid, attname, atttypid, attstattarget,
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attnum, attndims, atttypmod, attnotnull, atthasdef, attisdropped,
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attislocal, attcollation, attacl, attoptions, pg_get_expr(def.adbin, def.adrelid) AS def_value, cs.relname AS sername, ns.nspname AS serschema)__";
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if (m_catalog.serverVersion() >= 100000)
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q += ", attidentity";
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q += R"__(
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FROM pg_catalog.pg_attribute AS att
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LEFT JOIN pg_attrdef AS def ON attrelid=adrelid AND attnum=adnum
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LEFT JOIN (pg_depend JOIN pg_class cs ON classid='pg_class'::regclass AND objid=cs.oid AND cs.relkind='S') ON refobjid=att.attrelid AND refobjsubid=att.attnum
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LEFT JOIN pg_namespace ns ON ns.oid=cs.relnamespace)__";
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return q;
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}
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PgAttribute PgAttributeContainer::loadElem(const Pgsql::Row &row)
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{
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Pgsql::Col col(row);
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PgAttribute v;
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col >> v.relid >> v.name >> v.typid >> v.stattarget
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>> v.num >> v.ndims >> v.typmod >> v.notnull >> v.hasdef >> v.isdropped
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>> v.islocal >> v.collation >> v.acl >> v.options >> v.defaultValue
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>> v.sername >> v.serschema;
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if (m_catalog.serverVersion() >= 100000)
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col >> v.identity;
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return v;
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}
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std::vector<PgAttribute> PgAttributeContainer::getColumnsForRelation(Oid oid) const
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{
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std::vector<PgAttribute> result;
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for (const auto &e : m_container)
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if (e.relid == oid)
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result.push_back(e);
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return result;
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}
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