diff options
Diffstat (limited to 'user_guide_src/source/database')
| -rw-r--r-- | user_guide_src/source/database/query_builder.rst | 32 |
1 files changed, 21 insertions, 11 deletions
diff --git a/user_guide_src/source/database/query_builder.rst b/user_guide_src/source/database/query_builder.rst index 0a6d98744..737a4230e 100644 --- a/user_guide_src/source/database/query_builder.rst +++ b/user_guide_src/source/database/query_builder.rst @@ -640,18 +640,18 @@ Example:: $sql = $this->db->set($data)->get_compiled_insert('mytable'); echo $sql; - // Produces string: INSERT INTO mytable (title, name, date) VALUES ('My title', 'My name', 'My date') + // Produces string: INSERT INTO mytable (`title`, `name`, `date`) VALUES ('My title', 'My name', 'My date') The second parameter enables you to set whether or not the query builder query will be reset (by default it will be--just like $this->db->insert()):: echo $this->db->set('title', 'My Title')->get_compiled_insert('mytable', FALSE); - // Produces string: INSERT INTO mytable (title) VALUES ('My Title') + // Produces string: INSERT INTO mytable (`title`) VALUES ('My Title') echo $this->db->set('content', 'My Content')->get_compiled_insert(); - // Produces string: INSERT INTO mytable (title, content) VALUES ('My Title', 'My Content') + // Produces string: INSERT INTO mytable (`title`, `content`) VALUES ('My Title', 'My Content') The key thing to notice in the above example is that the second query did not utlize `$this->db->from()` nor did it pass a table name into the first @@ -730,7 +730,7 @@ or update functions:** :: $this->db->set('name', $name); - $this->db->insert('mytable'); // Produces: INSERT INTO mytable (name) VALUES ('{$name}') + $this->db->insert('mytable'); // Produces: INSERT INTO mytable (`name`) VALUES ('{$name}') If you use multiple function called they will be assembled properly based on whether you are doing an insert or an update:: @@ -740,18 +740,20 @@ based on whether you are doing an insert or an update:: $this->db->set('status', $status); $this->db->insert('mytable'); -**set()** will also accept an optional third parameter ($escape), that +**set()** will also accept an optional third parameter (``$escape``), that will prevent data from being escaped if set to FALSE. To illustrate the -difference, here is set() used both with and without the escape +difference, here is ``set()`` used both with and without the escape parameter. :: $this->db->set('field', 'field+1', FALSE); - $this->db->insert('mytable'); // gives INSERT INTO mytable (field) VALUES (field+1) - $this->db->set('field', 'field+1'); - $this->db->insert('mytable'); // gives INSERT INTO mytable (field) VALUES ('field+1') + $this->db->where('id', 2); + $this->db->update('mytable'); // gives UPDATE mytable SET field = field+1 WHERE id = 2 + $this->db->set('field', 'field+1'); + $this->db->where('id', 2); + $this->db->update('mytable'); // gives UPDATE `mytable` SET `field` = 'field+1' WHERE `id` = 2 You can also pass an associative array to this function:: @@ -792,7 +794,11 @@ is an example using an array:: $this->db->where('id', $id); $this->db->update('mytable', $data); - // Produces: // UPDATE mytable // SET title = '{$title}', name = '{$name}', date = '{$date}' // WHERE id = $id + // Produces: + // + // UPDATE mytable + // SET title = '{$title}', name = '{$name}', date = '{$date}' + // WHERE id = $id Or you can supply an object:: @@ -807,7 +813,11 @@ Or you can supply an object:: $object = new Myclass; $this->db->where('id', $id); $this->db->update('mytable', $object); - // Produces: // UPDATE mytable // SET title = '{$title}', name = '{$name}', date = '{$date}' // WHERE id = $id + // Produces: + // + // UPDATE `mytable` + // SET `title` = '{$title}', `name` = '{$name}', `date` = '{$date}' + // WHERE id = `$id` .. note:: All values are escaped automatically producing safer queries. |