# odbc_columns

(PHP 4, PHP 5, PHP 7)

odbc_columns — Lists the column names in specified tables

### 说明

odbc_columns ( resource `$connection_id` [, string `$qualifier` [, string `$schema` [, string `$table_name` [, string `$column_name` ]]]] ) : resource

Lists all columns in the requested range.

### 参数

`connection_id`

  ODBC 连接标识符，详见 odbc_connect()。

`qualifier`

  The qualifier.

`schema`

  The owner.

`table_name`

  The table name.

`column_name`

  The column name.

The `schema`, `table_name`, and `column_name` accept search patterns ('%' to match zero or more characters and '_' to match a single character).

### 返回值

Returns an ODBC result identifier 或者在失败时返回 `FALSE`.

The result set has the following columns:

- TABLE_QUALIFIER
- TABLE_SCHEM
- TABLE_NAME
- COLUMN_NAME
- DATA_TYPE
- TYPE_NAME
- PRECISION
- LENGTH
- SCALE
- RADIX
- NULLABLE
- REMARKS

The result set is ordered by TABLE_QUALIFIER, TABLE_SCHEM and TABLE_NAME.

### 参见

- odbc_columnprivileges() - Lists columns and associated privileges for the given table to retrieve associated privileges