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
1.5 KiB
C++
48 lines
1.5 KiB
C++
#ifndef PGATTRIBUTE_H
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#define PGATTRIBUTE_H
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#include "Pgsql_declare.h"
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#include <QString>
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#include <libpq-fe.h>
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#include <tuple>
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class PgClass;
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class PgDatabaseCatalog;
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class PgAttribute {
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public:
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using Key = std::tuple<Oid, int16_t>;
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Oid relid = InvalidOid;
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QString name;
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Oid typid = InvalidOid;
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int32_t stattarget = 0;
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int16_t num = 0;
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int32_t ndims = 0; // array dimensions
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int32_t typmod = -1;
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bool notnull = false;
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bool hasdef = false;
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char identity = '\0';
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bool isdropped = false;
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bool islocal = true;
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Oid collation = InvalidOid;
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QString acl;
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QString options;
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QString defaultValue; ///< Comes from pg_attrdef table
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QString sername, serschema; // serial sequence name and schema
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bool operator==(Key _k) const { return relid == std::get<0>(_k) && num == std::get<1>(_k); }
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bool operator==(const QString &n) const { return name == n; }
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bool operator<(Key _k) const { return relid < std::get<0>(_k) || (relid == std::get<0>(_k) && num < std::get<1>(_k)); }
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bool operator<(const PgAttribute &rhs) const { return relid < rhs.relid || (relid == rhs.relid && num < rhs.num); }
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/// Return the part of the SQL create statement that can be reused for both the CREATE TABLE and ALTER TABLE ADD COLUMN
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QString columnDefinition(const PgDatabaseCatalog &cat) const;
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QString alterTableAddColumn(const PgDatabaseCatalog &cat, const PgClass &table) const;
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QString alterTableDropColumn(const PgDatabaseCatalog &cat, const PgClass &table) const;
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bool isSerial() const { return !sername.isEmpty(); }
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};
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#endif // PGATTRIBUTE_H
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