From df62f7c83721afd1e0cc4b91584dbdaa978334cc Mon Sep 17 00:00:00 2001
From: Rodrigo Boratto <rodrigo.rwrz@gmail.com>
Date: Wed, 2 Nov 2022 11:03:38 -0300
Subject: [PATCH 1/3] CockroachDB default types

In cockroachdb, the default values returns something like `field:::TIMESTAMPZ`, and the validation here is only by the default value, without its type, this regex is required.
---
 migrator.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/migrator.go b/migrator.go
index debed56..f749f84 100644
--- a/migrator.go
+++ b/migrator.go
@@ -424,6 +424,9 @@ func (m Migrator) ColumnTypes(value interface{}) (columnTypes []gorm.ColumnType,
 
 			if column.DefaultValueValue.Valid {
 				column.DefaultValueValue.String = regexp.MustCompile(`'(.*)'::[\w\s]+$`).ReplaceAllString(column.DefaultValueValue.String, "$1")
+				column.DefaultValueValue.String = regexp.MustCompile(`'(.*)'::[\w]+$`).ReplaceAllString(column.DefaultValueValue.String, "$1")
+				// cockroachdb, removing :::type
+				column.DefaultValueValue.String = regexp.MustCompile(`(.*):::[\w]+$`).ReplaceAllString(column.DefaultValueValue.String, "$1")
 			}
 
 			if datetimePrecision.Valid {

From 6e0fcdfd1094a4692c0089698ef1f537ab93ee9f Mon Sep 17 00:00:00 2001
From: Rodrigo Boratto <rodrigo.rwrz@gmail.com>
Date: Wed, 2 Nov 2022 11:39:33 -0300
Subject: [PATCH 2/3] - considering column aliases for type checking in
 AlterColumn method

---
 migrator.go | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/migrator.go b/migrator.go
index f749f84..dc5a135 100644
--- a/migrator.go
+++ b/migrator.go
@@ -281,7 +281,22 @@ func (m Migrator) AlterColumn(value interface{}, field string) error {
 			}
 
 			fileType := clause.Expr{SQL: m.DataTypeOf(field)}
+			// check for typeName and SQL name
+			isSameType := true
 			if fieldColumnType.DatabaseTypeName() != fileType.SQL {
+				isSameType = false
+				// if different, also check for aliases
+				aliases := m.GetTypeAliases(fieldColumnType.DatabaseTypeName())
+				for _, alias := range aliases {
+					if strings.HasPrefix(fileType.SQL, alias) {
+						isSameType = true
+						break
+					}
+				}
+			}
+
+			// not same, migrate
+			if !isSameType {
 				filedColumnAutoIncrement, _ := fieldColumnType.AutoIncrement()
 				if field.AutoIncrement && filedColumnAutoIncrement { // update
 					serialDatabaseType, _ := getSerialDatabaseType(fileType.SQL)

From 68156b51d41bb2fd075773d7d938d39c8f4b9694 Mon Sep 17 00:00:00 2001
From: Rodrigo Boratto <rodrigo.rwrz@gmail.com>
Date: Tue, 27 Dec 2022 11:02:39 -0300
Subject: [PATCH 3/3] Merging cockroachdb + postgreSQL regex together. It work
 in all these cases: `'field'::character varying` `'field':::character
 varying` `field::character varying` `field:::character varying`

---
 migrator.go | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/migrator.go b/migrator.go
index dc5a135..f26bac0 100644
--- a/migrator.go
+++ b/migrator.go
@@ -6,7 +6,6 @@ import (
 	"regexp"
 	"strings"
 
-	"github.com/jackc/pgx/v5"
 	"gorm.io/gorm"
 	"gorm.io/gorm/clause"
 	"gorm.io/gorm/migrator"
@@ -438,10 +437,7 @@ func (m Migrator) ColumnTypes(value interface{}) (columnTypes []gorm.ColumnType,
 			}
 
 			if column.DefaultValueValue.Valid {
-				column.DefaultValueValue.String = regexp.MustCompile(`'(.*)'::[\w\s]+$`).ReplaceAllString(column.DefaultValueValue.String, "$1")
-				column.DefaultValueValue.String = regexp.MustCompile(`'(.*)'::[\w]+$`).ReplaceAllString(column.DefaultValueValue.String, "$1")
-				// cockroachdb, removing :::type
-				column.DefaultValueValue.String = regexp.MustCompile(`(.*):::[\w]+$`).ReplaceAllString(column.DefaultValueValue.String, "$1")
+				column.DefaultValueValue.String = regexp.MustCompile(`'?(.*)\b'?:+[\w\s]+$`).ReplaceAllString(column.DefaultValueValue.String, "$1")
 			}
 
 			if datetimePrecision.Valid {