## Install `SQLModel`

First, make sure you create your [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then install `sqlmodel`:

<div class="termy">

```console
$ pip install sqlmodel
---> 100%
```

</div>

## Create the App with a Single Model

We'll create the simplest first version of the app with a single **SQLModel** model first.

    public LocalDateTime getCreatedAt() {
        checkSpecifiedProperty("createdAt");
        return createdAt;
    }

    public void setCreatedAt(LocalDateTime value) {
        registerModifiedProperty("createdAt");
        this.createdAt = value;
    }

    public LocalDateTime getUpdatedAt() {
        checkSpecifiedProperty("updatedAt");

TF_Tensor* BoolTensor(int32_t v);

// Create a tensor with values of type TF_INT8 provided by `values`.
TF_Tensor* Int8Tensor(const int64_t* dims, int num_dims, const char* values);

// Create a tensor with values of type TF_INT32 provided by `values`.
TF_Tensor* Int32Tensor(const int64_t* dims, int num_dims,
                       const int32_t* values);

// Create 1 dimensional tensor with values from `values`

    public void setVersionNo(final Long version) {
        asDocMeta().version(version);
    }

    @Override
    public String toString() {
        return "BoostDocumentRule [boostExpr=" + boostExpr + ", createdBy=" + createdBy + ", createdTime=" + createdTime + ", sortOrder="
                + sortOrder + ", updatedBy=" + updatedBy + ", updatedTime=" + updatedTime + ", urlExpr=" + urlExpr + ", docMeta=" + docMeta
                + "]";
    }

    }

    public void setVersionNo(final Long version) {
        asDocMeta().version(version);
    }

    @Override
    public String toString() {
        return "KeyMatch [boost=" + boost + ", createdBy=" + createdBy + ", createdTime=" + createdTime + ", maxSize=" + maxSize
                + ", query=" + query + ", term=" + term + ", updatedBy=" + updatedBy + ", updatedTime=" + updatedTime + ", docMeta="
                + docMeta + "]";

	"gorm.io/gorm/schema"
	"gorm.io/gorm/utils"
)

// Create inserts value, returning the inserted data's primary key in value's id
func (db *DB) Create(value interface{}) (tx *DB) {
	if db.CreateBatchSize > 0 {
		return db.CreateInBatches(value, db.CreateBatchSize)
	}

	tx = db.getInstance()
	tx.Statement.Dest = value
	return tx.callbacks.Create().Execute(tx)
}

// CreateInBatches inserts value in batches of batchSize

{"index":{"_index":"fess_config.scheduled_job","_id":"log_aggregator"}}

        setCreatedAt_DateRange("createdAt", opLambda, null);
    }

    public void setCreatedAt_DateRange(ConditionOptionCall<DateRangeAggregationBuilder> opLambda, OperatorCall<BsUserInfoCA> aggsLambda) {
        setCreatedAt_DateRange("createdAt", opLambda, aggsLambda);
    }

    public String getCreatedBy() {
        checkSpecifiedProperty("createdBy");
        return convertEmptyToNull(createdBy);
    }

    public void setCreatedBy(String value) {
        registerModifiedProperty("createdBy");
        this.createdBy = value;
    }

    public Long getCreatedTime() {
        checkSpecifiedProperty("createdTime");

  /**
   * Constructs a new bimap containing initial values from {@code map}. The bimap is created with an
   * initial capacity sufficient to hold the mappings in the specified map.
   */
  public static <K extends @Nullable Object, V extends @Nullable Object> HashBiMap<K, V> create(
      Map<? extends K, ? extends V> map) {
    HashBiMap<K, V> bimap = create(map.size());
    bimap.putAll(map);
    return bimap;
  }