feat: Add quoted mode support (#681)

Co-authored-by: Johannes Vogel <31311694+johannes-vogel@users.noreply.github.com>
Co-authored-by: Daniel Hutzel <daniel.hutzel@sap.com>

db-service/lib/cqn2sql.js

@@ -34,6 +34,12 @@ class CQN2SQLRenderer {
  this.class = new.target // for IntelliSense
  this.class._init() // is a noop for subsequent calls
  this.model = srv?.model
+
+ // Overwrite smart quoting
+ if (cds.env.sql.names === 'quoted') {
+ this.class.prototype.name = (name) => name.id || name
+ this.class.prototype.quote = (s) => `"${String(s).replace(/"/g, '""')}"`
+ }
  }
 
  static _add_mixins(aspect, mixins) {
@@ -336,7 +342,12 @@ class CQN2SQLRenderer {
  const { ref, as } = from
  const _aliased = as ? s => s + ` as ${this.quote(as)}` : s => s
  if (ref) {
- const z = ref[0]
+ let z = ref[0]
+ if (cds.env.sql.names === 'quoted') {
+ // use SELECT.from to infer query, cds.infer also expects a query
+ const { target } = SELECT.from(from)
+ z = target?.['@cds.persistence.name'] || ref[0]
+ }
  if (z.args) {
  return _aliased(`${this.quote(this.name(z))}${this.from_args(z.args)}`)
  }

hana/lib/HANAService.js

@@ -607,11 +607,11 @@ class HANAService extends SQLService {
 
  // Calculate final output columns once
  let outputColumns = ''
- outputColumns = `_path_ as "_path_",${blobs} as "_blobs_",${expands} as "_expands_",${jsonColumn} as "_json_"`
+ outputColumns = `${this.quote('_path_')} as "_path_",${blobs} as "_blobs_",${expands} as "_expands_",${jsonColumn} as "_json_"`
  if (blobColumns.length)
  outputColumns = `${outputColumns},${blobColumns.map(b => `${this.quote(b)} as "${b.replace(/"/g, '""')}"`)}`
  this._outputColumns = outputColumns
- sql = `*,${path} as _path_`
+ sql = `*,${path} as ${this.quote('_path_')}`
  }
  return sql
  }