Before:
```
CREATE TABLE muted_users
(
    created_at    DATETIME,
    muted_user_id NUMERIC  NOT NULL,
    user_id       NUMERIC  NOT NULL
);

CREATE TABLE user_custom_fields
(
    created_at           DATETIME,
    field_id             NUMERIC,
    is_multiselect_field BOOLEAN,
    name                 TEXT     NOT NULL,
    user_id              NUMERIC  NOT NULL,
    value                TEXT
);

CREATE UNIQUE INDEX ucf_multiselect_by_field_id_index ON user_custom_fields (user_id, field_id, value) WHERE is_multiselect_field = TRUE AND field_id IS NOT NULL;

CREATE UNIQUE INDEX ucf_not_multiselect_by_field_id_index ON user_custom_fields (user_id, field_id) WHERE is_multiselect_field = FALSE AND field_id IS NOT NULL;

CREATE UNIQUE INDEX ucf_multiselect_by_name_index ON user_custom_fields (user_id, name, value) WHERE is_multiselect_field = TRUE;

CREATE UNIQUE INDEX ucf_not_multiselect_by_name_index ON user_custom_fields (user_id, name) WHERE is_multiselect_field = FALSE;

CREATE TABLE user_emails
(
    email      TEXT     NOT NULL,
    user_id    NUMERIC  NOT NULL,
    created_at DATETIME,
    "primary"  BOOLEAN,
    PRIMARY KEY (user_id, email)
);
``

```
CREATE TABLE muted_users
(
    created_at    DATETIME,
    muted_user_id NUMERIC  NOT NULL,
    user_id       NUMERIC  NOT NULL
);

CREATE TABLE user_custom_fields
(
    created_at           DATETIME,
    field_id             NUMERIC,
    is_multiselect_field BOOLEAN,
    name                 TEXT     NOT NULL,
    user_id              NUMERIC  NOT NULL,
    value                TEXT
);

CREATE UNIQUE INDEX ucf_multiselect_by_field_id_index ON user_custom_fields (user_id, field_id, value) WHERE is_multiselect_field = TRUE AND field_id IS NOT NULL;
CREATE UNIQUE INDEX ucf_not_multiselect_by_field_id_index ON user_custom_fields (user_id, field_id) WHERE is_multiselect_field = FALSE AND field_id IS NOT NULL;
CREATE UNIQUE INDEX ucf_multiselect_by_name_index ON user_custom_fields (user_id, name, value) WHERE is_multiselect_field = TRUE;
CREATE UNIQUE INDEX ucf_not_multiselect_by_name_index ON user_custom_fields (user_id, name) WHERE is_multiselect_field = FALSE;

CREATE TABLE user_emails
(
    email      TEXT     NOT NULL,
    user_id    NUMERIC  NOT NULL,
    created_at DATETIME,
    "primary"  BOOLEAN,
    PRIMARY KEY (user_id, email)
);
```