Fix invalid SQL for pgsql column type change

server/store/adapters/rdbms/drivers/postgres/data_definer.go

@@ -2,6 +2,7 @@ package postgres
 
 import (
 	"context"
+	"fmt"
 
 	"github.com/cortezaproject/corteza/server/pkg/dal"
 	"github.com/cortezaproject/corteza/server/store/adapters/rdbms/ddl"
@@ -16,6 +17,13 @@ type (
 		is     *informationSchema
 		d      *postgresDialect
 	}
+
+	reTypeColumn struct {
+		Dialect *postgresDialect
+		Table   string
+		Column  string
+		Type    *ddl.ColumnType
+	}
 )
 
 var (
@@ -80,7 +88,7 @@ func (dd *dataDefiner) ColumnRename(ctx context.Context, t string, o string, n s
 }
 
 func (dd *dataDefiner) ColumnReType(ctx context.Context, t string, col string, tp *ddl.ColumnType) error {
-	return ddl.Exec(ctx, dd.conn, &ddl.ReTypeColumn{
+	return ddl.Exec(ctx, dd.conn, &reTypeColumn{
 		Dialect: dd.d,
 		Table:   t,
 		Column:  col,
@@ -109,3 +117,12 @@ func (dd *dataDefiner) IndexDrop(ctx context.Context, t, i string) error {
 		Ident:   i,
 	})
 }
+
+func (c *reTypeColumn) ToSQL() (sql string, aa []interface{}, err error) {
+	return fmt.Sprintf(
+		`ALTER TABLE %s ALTER COLUMN %s TYPE %s`,
+		c.Dialect.QuoteIdent(c.Table),
+		c.Dialect.QuoteIdent(c.Column),
+		c.Type.Name,
+	), nil, nil
+}