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🐛 fix(shardingsphere): 修复代理分片表展示为物理表

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- 元数据取表接入 ShardingSphere 逻辑表规则

- 兼容 PostgreSQL、MySQL、MariaDB 协议入口

- 补充分片表折叠和降级测试

Refs #410
This commit is contained in:
Syngnat
2026-05-24 12:00:48 +08:00
parent 85a0f9d007
commit d414a38877
5 changed files with 325 additions and 12 deletions
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52
internal/db/postgres_impl.go
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@@ -297,25 +297,57 @@ func (p *PostgresDB) GetDatabases() ([]string, error) {
}
func (p *PostgresDB) GetTables(dbName string) ([]string, error) {
query := "SELECT schemaname, tablename FROM pg_catalog.pg_tables WHERE schemaname != 'information_schema' AND schemaname NOT LIKE 'pg|_%' ESCAPE '|' ORDER BY schemaname, tablename"
query := buildPostgresTablesQuery()
data, _, err := p.Query(query)
if err != nil {
return nil, err
data, _, err = p.Query(buildPostgresLegacyTablesQuery())
if err != nil {
return nil, err
}
}
var tables []string
tables := parsePostgresTableNames(data)
return resolveShardingSphereLogicalTables(tables, p.Query), nil
}
func buildPostgresTablesQuery() string {
return `
SELECT DISTINCT
n.nspname AS schemaname,
c.relname AS tablename
FROM pg_catalog.pg_class c
JOIN pg_catalog.pg_namespace n ON n.oid = c.relnamespace
WHERE c.relkind IN ('r', 'p')
AND n.nspname != 'information_schema'
AND n.nspname NOT LIKE 'pg|_%' ESCAPE '|'
ORDER BY n.nspname, c.relname`
}
func buildPostgresLegacyTablesQuery() string {
return "SELECT schemaname, tablename FROM pg_catalog.pg_tables WHERE schemaname != 'information_schema' AND schemaname NOT LIKE 'pg|_%' ESCAPE '|' ORDER BY schemaname, tablename"
}
func parsePostgresTableNames(data []map[string]interface{}) []string {
tables := make([]string, 0, len(data))
seen := make(map[string]struct{}, len(data))
for _, row := range data {
schema, okSchema := row["schemaname"]
name, okName := row["tablename"]
if okSchema && okName {
tables = append(tables, fmt.Sprintf("%v.%v", schema, name))
schema := getCaseInsensitiveRowString(row, "schemaname", "schema_name", "schema", "nspname")
name := getCaseInsensitiveRowString(row, "tablename", "table_name", "relname", "name")
if name == "" {
continue
}
if okName {
tables = append(tables, fmt.Sprintf("%v", name))
table := name
if schema != "" {
table = fmt.Sprintf("%s.%s", schema, name)
}
key := strings.ToLower(table)
if _, exists := seen[key]; exists {
continue
}
seen[key] = struct{}{}
tables = append(tables, table)
}
return tables, nil
return tables
}
func (p *PostgresDB) GetCreateStatement(dbName, tableName string) (string, error) {