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Use (BIG)SERIAL in generated SQL when this was used when column

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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.
This commit is contained in:
eelke 2019-12-01 06:40:11 +01:00
parent 817a371220
commit 2c2253f75e
3 changed files with 26 additions and 9 deletions
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17
pglablib/catalog/PgAttribute.cpp
View file

@ -6,15 +6,26 @@
#include "PgTypeContainer.h"
#include "PgCollation.h"
#include "PgCollationContainer.h"
#include "Pgsql_oids.h"
QString PgAttribute::columnDefinition(const PgDatabaseCatalog &cat) const
{
// create: column_name data_type [ COLLATE collation ] [ column_constraint [ ... ]
// alter: column_name data_type [ COLLATE collation ] [ column_constraint [ ... ]
// constraints NULL/NOT NULL, DEFAULT, GENERATED other constraints will be ignored here a
auto&& type = cat.types()->getByKey(typid);
QString type_str;
if (isSerial()) {
if (typid == Pgsql::int4_oid)
type_str = "SERIAL";
else if (typid == Pgsql::int8_oid)
type_str = "BIGSERIAL";
}
else {
auto&& type = cat.types()->getByKey(typid);
type_str = type->objectName();
}
QString sql = quoteIdent(name) % " " % type->objectName();
QString sql = quoteIdent(name) % " " % type_str;
if (collation != InvalidOid) {
auto&& col = cat.collations()->getByKey(collation);
QString oname = col->objectName();
@ -25,7 +36,7 @@ QString PgAttribute::columnDefinition(const PgDatabaseCatalog &cat) const
if (notnull)
sql += " NOT NULL";
if (hasdef)
if (hasdef && !isSerial())
sql += " DEFAULT " % defaultValue;
if (identity != '\0') {

4
pglablib/catalog/PgAttribute.h
View file

@ -30,7 +30,7 @@ public:
QString options;
QString defaultValue; ///< Comes from pg_attrdef table
QString sername, serschema; // serial sequence name and schema
bool operator==(Key _k) const { return relid == std::get<0>(_k) && num == std::get<1>(_k); }
bool operator==(const QString &n) const { return name == n; }
@ -41,6 +41,8 @@ public:
QString columnDefinition(const PgDatabaseCatalog &cat) const;
QString alterTableAddColumn(const PgDatabaseCatalog &cat, const PgClass &table) const;
QString alterTableDropColumn(const PgDatabaseCatalog &cat, const PgClass &table) const;
bool isSerial() const { return !sername.isEmpty(); }
};
#endif // PGATTRIBUTE_H

14
pglablib/catalog/PgAttributeContainer.cpp
View file

@ -12,12 +12,15 @@ std::string PgAttributeContainer::getLoadQuery() const
std::string q = R"__(
SELECT attrelid, attname, atttypid, attstattarget,
attnum, attndims, atttypmod, attnotnull, atthasdef, attisdropped,
attislocal, attcollation, attacl, attoptions, pg_get_expr(adbin, adrelid) AS def_value)__";
attislocal, attcollation, attacl, attoptions, pg_get_expr(def.adbin, def.adrelid) AS def_value, cs.relname AS sername, ns.nspname AS serschema)__";
if (m_catalog.serverVersion() >= 100000)
q += ", attidentity";
q +=
"\n FROM pg_catalog.pg_attribute \n"
" LEFT JOIN pg_attrdef ON attrelid=adrelid AND attnum=adnum";
q += R"__(
FROM pg_catalog.pg_attribute AS att
LEFT JOIN pg_attrdef AS def ON attrelid=adrelid AND attnum=adnum
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
LEFT JOIN pg_namespace ns ON ns.oid=cs.relnamespace)__";
return q;
}
@ -27,7 +30,8 @@ PgAttribute PgAttributeContainer::loadElem(const Pgsql::Row &row)
PgAttribute v;
col >> v.relid >> v.name >> v.typid >> v.stattarget
>> v.num >> v.ndims >> v.typmod >> v.notnull >> v.hasdef >> v.isdropped
>> v.islocal >> v.collation >> v.acl >> v.options >> v.defaultValue;
>> v.islocal >> v.collation >> v.acl >> v.options >> v.defaultValue
>> v.sername >> v.serschema;
if (m_catalog.serverVersion() >= 100000)
col >> v.identity;