From d0ff43684d124895105377d6055d46bf55f0591d Mon Sep 17 00:00:00 2001
From: actiontech-zihan <yangzhongjiao@actionsky.com>
Date: Fri, 24 Apr 2026 13:09:59 +0000
Subject: [PATCH] fix: use case-insensitive column name matching in
 ShowCreateTable/ShowCreateView

GoldenDB returns uppercase column names ("CREATE TABLE", "CREATE VIEW")
instead of MySQL's mixed-case ("Create Table", "Create View"), causing
SQLE schema meta collection to fail with "column not found" error.

Replace hardcoded map key lookups with case-insensitive iteration over
result keys. Also improve error messages to include available column
names for easier debugging of similar issues with other DB engines.

Fixes #2772
---
 sqle/driver/mysql/executor/executor.go | 40 ++++++++++++++++----------
 1 file changed, 25 insertions(+), 15 deletions(-)

diff --git a/sqle/driver/mysql/executor/executor.go b/sqle/driver/mysql/executor/executor.go
index 92f17c7e91..6d86649e02 100644
--- a/sqle/driver/mysql/executor/executor.go
+++ b/sqle/driver/mysql/executor/executor.go
@@ -307,21 +307,29 @@ func (c *Executor) ShowCreateTable(schema, tableName string) (string, error) {
 		return "", errors.New(errors.ConnectRemoteDatabaseError, err)
 	}
 
-	var queryCreate sql.NullString
-	var ok bool
-	if queryCreate, ok = result[0]["Create Table"]; ok {
-		return queryCreate.String, nil
-	}
-
-	if queryCreate, ok = result[0]["Create View"]; ok {
-		return queryCreate.String, nil
+	// Different databases may return different column names for SHOW CREATE TABLE.
+	// For example, MySQL returns "Create Table" / "Create View", while GoldenDB returns
+	// "CREATE TABLE" / "CREATE VIEW". Use case-insensitive matching to handle all variants.
+	for key, val := range result[0] {
+		upperKey := strings.ToUpper(key)
+		if upperKey == "CREATE TABLE" || upperKey == "CREATE VIEW" {
+			return val.String, nil
+		}
 	}
 
-	err = fmt.Errorf("show create table error, column \"Create Table\" or \"Create View\" not found")
+	err = fmt.Errorf("show create table error, column \"Create Table\" or \"Create View\" not found, available columns: %v", getResultKeys(result[0]))
 	c.Db.Logger().Error(err)
 	return "", errors.New(errors.ConnectRemoteDatabaseError, err)
 }
 
+func getResultKeys(row map[string]sql.NullString) []string {
+	keys := make([]string, 0, len(row))
+	for k := range row {
+		keys = append(keys, k)
+	}
+	return keys
+}
+
 /*
 示例：
 
@@ -484,13 +492,15 @@ func (c *Executor) ShowCreateView(tableName string) (string, error) {
 		c.Db.Logger().Error(err)
 		return "", errors.New(errors.ConnectRemoteDatabaseError, err)
 	}
-	if query, ok := result[0]["Create View"]; !ok {
-		err := fmt.Errorf("show create view error, column \"Create View\" not found")
-		c.Db.Logger().Error(err)
-		return "", errors.New(errors.ConnectRemoteDatabaseError, err)
-	} else {
-		return query.String, nil
+	for key, val := range result[0] {
+		if strings.ToUpper(key) == "CREATE VIEW" {
+			return val.String, nil
+		}
 	}
+
+	err = fmt.Errorf("show create view error, column \"Create View\" not found, available columns: %v", getResultKeys(result[0]))
+	c.Db.Logger().Error(err)
+	return "", errors.New(errors.ConnectRemoteDatabaseError, err)
 }
 
 func (c *Executor) ShowCurrentMaxColumnWidth(tableName, columnName string) (int, error) {