function date_sql_coalesce in Date 7

Same name and namespace in other branches

1. 8 date_api/date_api.module \date_sql_coalesce()
2. 5.2 date_api_sql.inc \date_sql_coalesce()
3. 6.2 date_api_sql.inc \date_sql_coalesce()
4. 7.3 date_api/date_api_sql.inc \date_sql_coalesce()
5. 7.2 date_api/date_api_sql.inc \date_sql_coalesce()

Helper function to do cross-database NULL replacements

Parameters

an array of values to test for NULL values:

Return value

SQL statement to return the first non-NULL value in the list.

File

date_api/date_api_sql.inc, line 34

SQL helper for Date API.

Code

function date_sql_coalesce($array) {
  switch (date_db_type()) {
    case 'mysql':
    case 'mysqli':
    case 'pgsql':
      return "COALESCE(" . implode(',', $array) . ")";
  }
}