在我的Java应用程序中,我曾经有一个sql查询,如下所示:
INSERT INTO "KPI_MEASURE" (
id,
created_at,
kpi_project_id,
kpi_frequency_id,
kpi_metric_id,
branch,
value
)
SELECT
nextval('"KPI_MEASURE_ID_seq"'::regclass),
now(),
kpi_measure.kpi_project_id,
kpi_measure.kpi_frequency_id,
kpi_measure.kpi_metric_id ,
kpi_measure.branch ,
sum(kpi_measure.value)
FROM "KPI_MEASURE" kpi_measure
INNER JOIN "KPI_METRIC" kpi_metric ON kpi_measure.kpi_metric_id = kpi_metric.id
INNER JOIN "KPI_PROJECT" kpi_project ON kpi_measure.kpi_project_id = kpi_project.id
INNER JOIN "KPI_AGGREGATION_PROJECT" kpi_agg_project ON kpi_project.name = kpi_agg_project.child_project_name
WHERE kpi_metric.aggregated = false
GROUP BY kpi_measure.branch, kpi_measure.kpi_metric_id, kpi_measure.kpi_project_id, kpi_project.name, kpi_measure.kpi_frequency_id;
我用jdbcTemboard. update
执行了那个sql,它工作了。
但是最近我通过一个参数更改了值now()
:today_date,我用我的代码给出了这个参数:
Map<String, Object> parameters = new HashMap<String, Object>();
parameters.put(TODAY_DATE, today); // TODAY_DATE = today_date
jdbcTemplate.update(sql, parameters);
但是现在,它会产生一个错误:
BadSqlGrammarException:准备状态回调;坏SQL语法
…
嵌套异常是org. postgresql.util.PSQLException:未安装hstore扩展。
我不明白为什么这是一个错误,因为这是我被告知要做的,当我们想要使用jdbc查询添加参数时。
列数据类型是没有时区的时间戳
,而今天的变量是
String
类型。
我想,我应该使用Timestamp
,所以我改变了我的代码:
Map<String, Object> parameters = new HashMap<String, Object>();
parameters.put(TODAY_DATE, new Timestamp(System.currentTimeMillis())); // TODAY_DATE = today_date
jdbcTemplate.update(sql, parameters);
现在我只有错误
"PSQLException:未安装hstore扩展。"
也许,我需要添加一个hstore,但我似乎不明白为什么。
您使用带有命名参数的JdbcTenmplate,但JdbcTemplate仅支持定位参数(?)。将JdbcTemplate替换为NamedParameterJdbcTemplate或将您的查询重写为:
INSERT INTO "KPI_MEASURE" (
id,
created_at,
kpi_project_id,
kpi_frequency_id,
kpi_metric_id,
branch,
value
)
SELECT
nextval('"KPI_MEASURE_ID_seq"'::regclass),
?,
kpi_measure.kpi_project_id,
kpi_measure.kpi_frequency_id,
kpi_measure.kpi_metric_id ,
kpi_measure.branch ,
sum(kpi_measure.value)
FROM "KPI_MEASURE" kpi_measure
INNER JOIN "KPI_METRIC" kpi_metric ON kpi_measure.kpi_metric_id = kpi_metric.id
INNER JOIN "KPI_PROJECT" kpi_project ON kpi_measure.kpi_project_id = kpi_project.id
INNER JOIN "KPI_AGGREGATION_PROJECT" kpi_agg_project ON kpi_project.name = kpi_agg_project.child_project_name
WHERE kpi_metric.aggregated = false
GROUP BY kpi_measure.branch, kpi_measure.kpi_metric_id, kpi_measure.kpi_project_id, kpi_project.name, kpi_measure.kpi_frequency_id;
并调用jdbcTemboard. update(sql,new Timestamp(System.current tTimeMillis()));