Merge pull request #1431 from openai0229/fix-pgsql-schemas

。

Author: Chat2DB-Pro

chat2db-server/chat2db-plugins/chat2db-postgresql/src/main/java/ai/chat2db/plugin/postgresql/PostgreSQLMetaData.java

@@ -54,7 +54,7 @@ public List<Database> databases(Connection connection) {
 
     private List<String> systemSchemas = Arrays.asList("pg_toast", "pg_temp_1", "pg_toast_temp_1", "pg_catalog", "information_schema");
 
-    @Override
+/*    @Override
     public List<Schema> schemas(Connection connection, String databaseName) {
         List<Schema> schemas = SQLExecutor.getInstance().execute(connection,
                                                                  "SELECT catalog_name, schema_name FROM information_schema.schemata;", resultSet -> {
@@ -70,7 +70,7 @@ public List<Schema> schemas(Connection connection, String databaseName) {
                     return databases;
                 });
         return SortUtils.sortSchema(schemas, systemSchemas);
-    }
+    }*/
 
 
     private static final String SELECT_TABLE_INDEX = "SELECT tmp.INDISPRIMARY AS Index_primary, tmp.TABLE_SCHEM, tmp.TABLE_NAME, tmp.NON_UNIQUE, tmp.INDEX_QUALIFIER, tmp.INDEX_NAME AS Key_name, tmp.indisclustered, tmp.ORDINAL_POSITION AS Seq_in_index, TRIM ( BOTH '\"' FROM pg_get_indexdef ( tmp.CI_OID, tmp.ORDINAL_POSITION, FALSE ) ) AS Column_name,CASE  tmp.AM_NAME   WHEN 'btree' THEN CASE   tmp.I_INDOPTION [ tmp.ORDINAL_POSITION - 1 ] & 1 :: SMALLINT   WHEN 1 THEN  'D' ELSE'A'  END ELSE NULL  END AS Collation, tmp.CARDINALITY, tmp.PAGES, tmp.FILTER_CONDITION , tmp.AM_NAME AS Index_method, tmp.DESCRIPTION AS Index_comment FROM ( SELECT  n.nspname AS TABLE_SCHEM,  ct.relname AS TABLE_NAME,  NOT i.indisunique AS NON_UNIQUE, NULL AS INDEX_QUALIFIER,  ci.relname AS INDEX_NAME,i.INDISPRIMARY , i.indisclustered ,  ( information_schema._pg_expandarray ( i.indkey ) ).n AS ORDINAL_POSITION,  ci.reltuples AS CARDINALITY,   ci.relpages AS PAGES,  pg_get_expr ( i.indpred, i.indrelid ) AS FILTER_CONDITION,  ci.OID AS CI_OID, i.indoption AS I_INDOPTION,  am.amname AS AM_NAME , d.description  FROM   pg_class ct   JOIN pg_namespace n ON ( ct.relnamespace = n.OID )   JOIN pg_index i ON ( ct.OID = i.indrelid )   JOIN pg_class ci ON ( ci.OID = i.indexrelid )  JOIN pg_am am ON ( ci.relam = am.OID )      left outer join pg_description d on i.indexrelid = d.objoid  WHERE  n.nspname = '%s'   AND ct.relname = '%s'   ) AS tmp ;";