Question

public boolean isDuplicateAccountMaterChartOfAccountsBySQL(MasterChartOfAccounts masterChartOfAccounts) {
    String query = """
        SELECT
            COUNT(mcoa.id) as mcoaCount
            FROM master_chart_of_accounts as mcoa
            WHERE
                mcoa.parent_account_id = ${masterChartOfAccounts.parentAccount?.id}
                AND mcoa.account_code = '${masterChartOfAccounts.accountCode}'
                AND mcoa.country_id = ${masterChartOfAccounts.countryId}
                AND mcoa.account_status_id = ${AccountsConstants.DOMAIN_STATUS_ACTIVE}
        """
    Sql db = new Sql(dataSource)
    List<GroovyRowResult> resultList = db.rows(query)
    return resultList.get(0).mcoaCount
}

这里字段parent_account_id可以是NULL或可以是Null。但是sql查询不能以这种方式对null值起作用。我们要写其中mcoa.parent_account_id为NULL。那么在字段可以为NULL或非空的情况下我该怎么办

Answer 1

    @Transactional(readOnly = true)
public boolean isDuplicateAccountMaterChartOfAccountsBySQL(MasterChartOfAccounts masterChartOfAccounts) {
    String query = """
        SELECT
            COUNT(mcoa.id) as mcoaCount
            FROM master_chart_of_accounts as mcoa
            WHERE
                mcoa.account_code = '${masterChartOfAccounts.accountCode}'
                AND mcoa.country_id = ${masterChartOfAccounts.countryId}
                AND mcoa.account_status_id = ${AccountsConstants.DOMAIN_STATUS_ACTIVE}
        """
    if (masterChartOfAccounts.parentAccount?.id) {
        query += " AND mcoa.parent_account_id = ${masterChartOfAccounts.parentAccount?.id}"
    }
    Sql db = new Sql(dataSource)
    List<GroovyRowResult> resultList = db.rows(query)
    return resultList.get(0).mcoaCount
}

是的我解决了。：D

如何在groovy中编写查询，而字段值可以为null或不为null

1 个答案: