案列:
SELECT
frwybs,
t1.dept_evaluation_labels
FROM
hunan_frk.each_corporate_portrait_label t1
WHERE
t1.dept_evaluation_labels IS NOT NULL;
解决方案:
--方法一:unnest(数组,分隔符)
SELECT
frwybs,
UNNEST (
string_to_array(
t1.dept_evaluation_labels,
','
)
) dept_evaluation_labels
FROM
hunan_frk.each_corporate_portrait_label t1
WHERE
t1.dept_evaluation_labels IS NOT NULL;
--方法二:regexp_split_to_table(字符串,分隔符)
SELECT
frwybs,
regexp_split_to_table(
t1.dept_evaluation_labels,
','
) dept_evaluation_labels
FROM
hunan_frk.each_corporate_portrait_label t1
WHERE
t1.dept_evaluation_labels IS NOT NULL;
--其中字符串变数组的方法:
--方法一:
SELECT
frwybs,
string_to_array(
t1.dept_evaluation_labels,
','
)
FROM
hunan_frk.each_corporate_portrait_label t1
WHERE
t1.dept_evaluation_labels IS NOT NULL;
--方法二:
SELECT
frwybs,
regexp_split_to_array(
t1.dept_evaluation_labels,
','
)
FROM
hunan_frk.each_corporate_portrait_label t1
WHERE
t1.dept_evaluation_labels IS NOT NULL;