云数据库 GaussDB-COMMENT:语法格式

时间：2025-02-12 15:07:58

云数据库 GaussDB

语法格式

  
       COMMENT ON{  AGGREGATE agg_name (agg_type [, ...] ) |  CAST (source_type AS target_type) |  COLLATION object_name |  COLUMN { table_name.column_name | view_name.column_name } |  CONSTRAINT constraint_name ON table_name |  CONVERSION object_name |  DATABASE object_name |  DOMAIN object_name |  EXTENSION object_name |  FOREIGN DATA WRAPPER object_name |  FOREIGN TABLE object_name |  FUNCTION function_name ( [ {[ argname ] [ argmode ] argtype} [, ...] ] ) |  INDEX object_name |   OPERATOR operator_name (left_type, right_type) |  OPERATOR CLASS object_name USING index_method |  OPERATOR FAMILY object_name USING index_method |  [ PROCEDURAL ] LANGUAGE object_name |  ROLE object_name |  SCHEMA object_name |  SERVER object_name |  TABLE object_name |  TABLESPACE object_name |  TEXT SEARCH CONFIGURATION object_name |  TEXT SEARCH DICTIONARY object_name |  TEXT SEARCH PARSER object_name |  TEXT SEARCH TEMPLATE object_name |  TYPE object_name |  VIEW object_name |  TRIGGER trigger_name ON table_name}   IS 'text';