diff options
| -rw-r--r-- | includes/database.mysql.inc | 7 | ||||
| -rw-r--r-- | includes/database.mysqli.inc | 7 | ||||
| -rw-r--r-- | includes/database.pgsql.inc | 7 |
3 files changed, 21 insertions, 0 deletions
diff --git a/includes/database.mysql.inc b/includes/database.mysql.inc index 4617ca125..72f3a4c7a 100644 --- a/includes/database.mysql.inc +++ b/includes/database.mysql.inc @@ -422,6 +422,13 @@ function db_table_exists($table) { } /** + * Check if a column exists in the given table. + */ +function db_column_exists($table, $column) { + return db_num_rows(db_query("SHOW COLUMNS FROM {%s} LIKE '%s'", $table, $column)); +} + +/** * Wraps the given table.field entry with a DISTINCT(). The wrapper is added to * the SELECT list entry of the given query and the resulting query is returned. * This function only applies the wrapper if a DISTINCT doesn't already exist in diff --git a/includes/database.mysqli.inc b/includes/database.mysqli.inc index 5e829fbd3..04f8cc9aa 100644 --- a/includes/database.mysqli.inc +++ b/includes/database.mysqli.inc @@ -402,6 +402,13 @@ function db_table_exists($table) { } /** + * Check if a column exists in the given table. + */ +function db_column_exists($table, $column) { + return db_num_rows(db_query("SHOW COLUMNS FROM {%s} LIKE '%s'", $table, $column)); +} + +/** * Wraps the given table.field entry with a DISTINCT(). The wrapper is added to * the SELECT list entry of the given query and the resulting query is returned. * This function only applies the wrapper if a DISTINCT doesn't already exist in diff --git a/includes/database.pgsql.inc b/includes/database.pgsql.inc index 56a30ee9a..be5e4447a 100644 --- a/includes/database.pgsql.inc +++ b/includes/database.pgsql.inc @@ -395,6 +395,13 @@ function db_table_exists($table) { } /** + * Check if a column exists in the given table. + */ +function db_column_exists($table, $column) { + return db_result(db_query("SELECT COUNT(pg_attribute.attname) FROM pg_class, pg_attribute WHERE pg_attribute.attrelid = pg_class.oid AND pg_class.relname = '{". db_escape_table($table) ."}' AND attname='%s'", $column)); +} + +/** * Verify if the database is set up correctly. */ function db_check_setup() { |