How to Convert this Query to Eloquent or Query Builder? - laravel

Question

I have a query like this. How should I convert it into a eloquent or query builder
SELECT
x.MATERIAL_ID,
(SELECT TAPET_NAME FROM MA_TAPE_TYPE WHERE TAPET_CODE = x.MATERIAL_TYPE) as media_type,
(SELECT TAPEF_NAME FROM MA_TAPE_FORMAT WHERE TAPEF_CODE = x.MATERIAL_FORMAT) as media_format,
STOCK_MATERIAL_EPI.HOUSE_NO,
x.TXN_DATE,
STOCK_MATERIAL_EPI.PROGRAM_NAME,
CASE WHEN x.iden_flag = 'P' THEN STOCK_MATERIAL_EPI.epi_title WHEN x.iden_flag = 'C'
THEN STOCK_MATERIAL_EPI.prod_version_name WHEN x.iden_flag = 'M' THEN STOCK_MATERIAL_EPI.promo_name
END as episode_title,
PUR_EPISODE_HDR.EPI_NO,
(SELECT MAX (last_date) FROM run_master WHERE run_master.row_id_epi = PUR_EPISODE_HDR.row_id AND
run_master.run_aired = 'Y') as last_tx,
x.REMARKS,
x.LOCATION_ID as shelf_no,
stock_material_slag.remarks as short_list
FROM STOCK_MATERIAL x
LEFT JOIN STOCK_MATERIAL_EPI ON x.MATERIAL_ID = STOCK_MATERIAL_EPI.MATERIAL_ID
LEFT JOIN stock_material_slag ON x.MATERIAL_ID = stock_material_slag.MATERIAL_ID
LEFT JOIN PUR_EPISODE_HDR ON STOCK_MATERIAL_EPI.ROW_ID_EPI = PUR_EPISODE_HDR.ROW_ID
I'm confused as to how to convert them. Can someone help me.
I tried to write like this.
But it doesn't work,
$materials = DB::connection('oracle')
->table('STOCK_MATERIAL AS x')
->select('x.MATERIAL_ID',
DB::raw("(SELECT TAPET_NAME FROM MA_TAPE_TYPE WHERE TAPET_CODE = x.MATERIAL_TYPE) as MEDIA_TYPE"),
DB::raw("(SELECT TAPEF_NAME FROM MA_TAPE_FORMAT WHERE TAPEF_CODE = x.MATERIAL_FORMAT) as MEDIA_FORMAT"),
'x.TXN_DATE',
'y.HOUSE_NO', 'y.PROGRAM_NAME',
DB::raw("(CASE WHEN x.IDEN_FLAG = 'P' THEN z.EPI_TITLE WHEN x.IDEN_FLAG = 'C' THEN z.PROD_VERSION_NAME WHEN x.IDEN_FLAG = 'M' THEN z.PROMO_NAME END as EPISODE_TITLE)"),
'w.EPI_NO',
DB::raw("(SELECT MAX (LAST_DATE) FROM RUN_MASTER WHERE RUN_MASTER.ROW_ID_EPI = w.ROW_ID AND RUN_MASTER.RUN_AIRED = 'Y') as LAST_TX"),
'z.REMARKS',
'x.LOCATION_ID as SHELF_NO',
'z.REMARKS'
)
->leftJoin('STOCK_MATERIAL_EPI AS y', 'y.MATERIAL_ID', '=', 'x.MATERIAL_ID')
->leftJoin('STOCK_MATERIAL_SLAG AS z', 'z.MATERIAL_ID', '=', 'x.MATERIAL_ID')
->leftJoin('PUR_EPISODE_HDR AS w', 'w.ROW_ID', '=', 'y.ROW_ID_EPI')
What else do I write right?

Answer 1

You would need to define eloquent models and then use with(). Documentation can be found at the link below: https://laravel.com/docs/7.x/eloquent-relationships#constraining-eager-loads
example
StockMaterial::with([
'maTapeType' => function($query) {
$query->get('name')
})
])
For Query Builder you DB::raw and DB::leftJoin to create the same query.
DB::from('STOCK_MATERIAL')
->selectRaw([
'TAPET_NAME as media_type',
'CASE WHEN x.iden_flag = "P" THEN STOCK_MATERIAL_EPI.epi_title
WHEN x.iden_flag = "C" THEN STOCK_MATERIAL_EPI.prod_version_name
WHEN x.iden_flag = "M" THEN STOCK_MATERIAL_EPI.promo_name
END as episode_title',
])
->leftJoin('MA_TAPE_TYPE', 'TAPET_CODE', 'STOCK_MATERIAL.MATERIAL_TYPE')
https://laravel.com/docs/7.x/queries#raw-expressions
https://laravel.com/docs/7.x/queries#joins