PDO::cubrid_schema

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PDO::cubrid_schema — Get the requested schema information

说明

public PDO::cubrid_schema ( int $schema_type [, string $table_name [, string $col_name ]] ) : array

This function is used to get the requested schema information from database. You have to designate table_name, if you want to get information on certain table, col_name, if you want to get information on certain column (can be used only with PDO::CUBRID_SCH_COL_PRIVILEGE).

The result of this function is returned as a two-dimensional array (column (associative array) * row (numeric array)). The following tables shows types of schema and the column structure of the result array to be returned based on the schema type.

Result Composition of Each Type
Schema Column Number Column Name Value
PDO::CUBRID_SCH_TABLE 1 NAME  
  2 TYPE 0:system table 1:view 2:table
PDO::CUBRID_SCH_VIEW 1 NAME  
  2 TYPE 1:view
PDO::CUBRID_SCH_QUERY_SPEC 1 QUERY_SPEC  
PDO::CUBRID_SCH_ATTRIBUTE / PDO::CUBRID_SCH_TABLE_ATTRIBUTE 1 ATTR_NAME  
  2 DOMAIN  
  3 SCALE  
  4 PRECISION  
  5 INDEXED 1:indexed
  6 NOT NULL 1:not null
  7 SHARED 1:shared
  8 UNIQUE 1:unique
  9 DEFAULT  
  10 ATTR_ORDER base:1
  11 CLASS_NAME  
  12 SOURCE_CLASS  
  13 IS_KEY 1:key
PDO::CUBRID_SCH_METHOD / PDO::CUBRID_SCH_TABLE_METHOD 1 NAME  
  2 RET_DOMAIN  
  3 ARG_DOMAIN  
PDO::CUBRID_SCH_METHOD_FILE 1 METHOD_FILE  
PDO::CUBRID_SCH_SUPER_TABLE / PDO::CUBRID_SCH_DIRECT_SUPER_TABLE / PDO::CUBRID_SCH_SUB_TABLE 1 CLASS_NAME  
  2 TYPE 0:system table 1:view 2:table
PDO::CUBRID_SCH_CONSTRAINT 1 TYPE 0:unique 1:index 2:reverse unique 3:reverse index
  2 NAME  
  3 ATTR_NAME  
  4 NUM_PAGES  
  5 NUM_KEYS  
  6 PRIMARY_KEY 1:primary key
  7 KEY_ORDER base:1
PDO::CUBRID_SCH_TRIGGER 1 NAME  
  2 STATUS  
  3 EVENT  
  4 TARGET_CLASS  
  5 TARGET_ATTR  
  6 ACTION_TIME  
  7 ACTION  
  8 PRIORITY  
  9 CONDITION_TIME  
  10 CONDITION  
PDO::CUBRID_SCH_TABLE_PRIVILEGE / PDO::CUBRID_SCH_COL_PRIVILEGE 1 CLASS_NAME / ATTR_NAME  
  2 PRIVILEGE  
  3 GRANTABLE  
PDO::CUBRID_SCH_PRIMARY_KEY 1 CLASS_NAME  
  2 ATTR_NAME  
  3 KEY_SEQ base:1
  4 KEY_NAME  
PDO::CUBRID_SCH_IMPORTED_KEYS / PDO::CUBRID_SCH_EXPORTED_KEYS / PDO::CUBRID_SCH_CROSS_REFERENCE 1 PKTABLE_NAME  
  2 PKCOLUMN_NAME  
  3 FKTABLE_NAME base:1
  4 FKCOLUMN_NAME  
  5 KEY_SEQ base:1
  6 UPDATE_ACTION 0:cascade 1:restrict 2:no action 3:set null
  7 DELETE_ACTION 0:cascade 1:restrict 2:no action 3:set null
  8 FK_NAME  
  9 PK_NAME  

参数

schema_type

Schema type that you want to know.

table_name

Table you want to know the schema of.

col_name

Column you want to know the schema of.

返回值

Array containing the schema information, when process is successful;

FALSE, when process is unsuccessful

范例

Example #1 A PDO::cubrid_schema() example

This example shows how to get primary key and foreign keys of table game.

<?php
$pk_list = $dbh->cubrid_schema(PDO::CUBRID_SCH_PRIMARY_KEY, "game");
print_r($pk_list);

$fk_list = $dbh->cubrid_schema(PDO::CUBRID_SCH_IMPORTED_KEYS, "game");
print_r($fk_list);
?>

以上例程会输出：

Result:
Array
(
    [0] => Array
        (
            [CLASS_NAME] => game
            [ATTR_NAME] => athlete_code
            [KEY_SEQ] => 3
            [KEY_NAME] => pk_game_host_year_event_code_athlete_code
        )

    [1] => Array
        (
            [CLASS_NAME] => game
            [ATTR_NAME] => event_code
            [KEY_SEQ] => 2
            [KEY_NAME] => pk_game_host_year_event_code_athlete_code
        )

    [2] => Array
        (
            [CLASS_NAME] => game
            [ATTR_NAME] => host_year
            [KEY_SEQ] => 1
            [KEY_NAME] => pk_game_host_year_event_code_athlete_code
        )

)
Array
(
    [0] => Array
        (
            [PKTABLE_NAME] => athlete
            [PKCOLUMN_NAME] => code
            [FKTABLE_NAME] => game
            [FKCOLUMN_NAME] => athlete_code
            [KEY_SEQ] => 1
            [UPDATE_RULE] => 1
            [DELETE_RULE] => 1
            [FK_NAME] => fk_game_athlete_code
            [PK_NAME] => pk_athlete_code
        )

    [1] => Array
        (
            [PKTABLE_NAME] => event
            [PKCOLUMN_NAME] => code
            [FKTABLE_NAME] => game
            [FKCOLUMN_NAME] => event_code
            [KEY_SEQ] => 1
            [UPDATE_RULE] => 1
            [DELETE_RULE] => 1
            [FK_NAME] => fk_game_event_code
            [PK_NAME] => pk_event_code
        )

)