In PostgreSQL, STRING_TO_ARRAY() is a built-in array function that accepts three arguments: a string, a delimiter, and a text to replace the null values. The STRING_TO_ARRAY() function accepts a string as the f
该函数还可以搭配array_to_string函数将数组转合并成一个字符串: 1 2 select array_to_string(array_agg(distinct ref_no), '&') from cnt_item where updated_on between '2021-05-05' and '2021-05-30 16:13:25'; --合并结果:ITM2105-000001&ITM2105-000002&ITM2105-000003 分割字符串 string_to_...
就这样。对于右侧缺少的元素,将自动填充NULL值。 如果参数是以字符串形式提供的,则首先使用string_to_array()进行转换。比如: 代码语言:javascript 运行 AI代码解释 SELECT * FROM unnest(string_to_array('12;5;25;10', ';') , string_to_array('10;20' , ';')) AS t(col1, col2); 关于旧版本的...
PostgreSQL POSITION() function PostgresQL ANY / SOME Operator ( IN vs ANY ) PostgreSQL Substring - Extracting a substring from a String How to add an auto-incrementing primary key to an existing table, in PostgreSQL PostgreSQL STRING_TO_ARRAY()function mysql FIND_IN_SET equivalent to postgresql...
STRING_TO_ARRAY函数将字符串分割为数组元素,并允许指定空字符串的替换值。 SELECTstring_to_array('xx~^~yy~^~zz','~^~');-- 返回 {xx,yy,zz}SELECTstring_to_array('xx~^~yy~^~zz','~^~','yy');-- 返回 {xx,NULL,zz} 1. 2.
string_to_array(text, text [, text])text[]splits string into array elements using supplied delimiter and optional null stringstring_to_array('xx~^~yy~^~zz', '~^~', 'yy'){xx,NULL,zz} unnest(anyarray)setof anyelementexpand an array to a set of rowsunnest(ARRAY[1,2]) ...
2|02、array 相关函数 -- string 转换 array -- 函数 string_to_array select array_to_string(array[1, 2, 3], '~^~'); array_to_string --- 1~^~2~^~3 -- 函数 string_to_array select string_to_array('1~^~2~^~3','~^~'); string_to_array --- {1,2,3} -- 函数 regexp_...
(select gds.gdgid,array_to_string(array_agg(gd1.name order by gds.code),',') jyfa from GDSALESCHEMEDTL gds left join GDSALESCHEME gd1 on gds.code = gd1.code and gd1.orggid= 1000001 where gd1.code <> '9901' group by gds.gdgid ) gds on g.gid = gds.gdgid where 1 = 1...
Uses of the PostgreSQL ARRAY_TO_STRING() Function Concatenate Array Elements:Combine array elements into a single string with a specified delimiter. Handle Null Values:Replace null values in the array with a specified string during concatenation. ...
两阶段对应事务存放在proc array中,等待commit/abortbool valid;/* true if PGPROC entry is in proc array */// 日志记录在PG_twophase中bool ondisk;/* true if prepare state file is on disk */// 这个GlobalTransactionData中的内容时通过回放WAL日志获得bool inredo;/* true if entry was added ...