sqlboiler/templates/13_exists.tpl

{{- $tableNameSingular := .Table.Name | singular | titleCase -}}
{{- $colDefs := sqlColDefinitions .Table.Columns .Table.PKey.Columns -}}
{{- $pkNames := $colDefs.Names | stringMap .StringFuncs.camelCase -}}
{{- $pkArgs := joinSlices " " $pkNames $colDefs.Types | join ", "}}
// {{$tableNameSingular}}Exists checks if the {{$tableNameSingular}} row exists.
func {{$tableNameSingular}}Exists(exec boil.Executor, {{$pkArgs}}) (bool, error) {
  var exists bool

  row := exec.QueryRow(
    `select exists(select 1 from "{{.Table.Name}}" where {{whereClause 1 .Table.PKey.Columns}} limit 1)`,
    {{$pkNames | join ", "}},
  )

  err := row.Scan(&exists)
  if err != nil {
    return false, fmt.Errorf("{{.PkgName}}: unable to check if {{.Table.Name}} exists: %v", err)
  }

  return exists, nil
}

// {{$tableNameSingular}}ExistsG checks if the {{$tableNameSingular}} row exists.
func {{$tableNameSingular}}ExistsG({{$pkArgs}}) (bool, error) {
  return {{$tableNameSingular}}Exists(boil.GetDB(), {{$pkNames | join ", "}})
}

// {{$tableNameSingular}}ExistsGP checks if the {{$tableNameSingular}} row exists. Panics on error.
func {{$tableNameSingular}}ExistsGP({{$pkArgs}}) bool {
  e, err := {{$tableNameSingular}}Exists(boil.GetDB(), {{$pkNames | join ", "}})
  if err != nil {
    panic(boil.WrapErr(err))
  }

  return e
}

// {{$tableNameSingular}}ExistsP checks if the {{$tableNameSingular}} row exists. Panics on error.
func {{$tableNameSingular}}ExistsP(exec boil.Executor, {{$pkArgs}}) bool {
  e, err := {{$tableNameSingular}}Exists(exec, {{$pkNames | join ", "}})
  if err != nil {
    panic(boil.WrapErr(err))
  }

  return e
}