Postgres数据库中有一列存储jsonb类型值。其中一些值是原始字符串(不是列表或字典)。我希望能够对该列执行regex搜索,如select* from database where jsonb_column::text ~ regex_expression.问题是对于已经是字符串的值,从jsonb到text的转换会在值的开头和结尾添加额外的转义双引号。我不希望regex查询中包含这些内...
CREATE OR REPLACE FUNCTION data_of(integer) RETURNS text AS$BODY$DECLARE sensors varchar(100); -- holds list of column names type varchar(100); -- holds name of table result text; -- holds SQL query -- declare more variablesBEGIN -- do some crazy stuff result := 'SELECT\r\nDatahora...
Postgres allows us to create a table via the SELECT command; for this purpose, the CREATE TABLE statement is used along with an AS clause followed by a SELECT statement. The newly created table will have the same table structure (e.g., column names, data types, etc.) as the columns in...
type..例如:如果type是pcdmet然后sensors将是'datahora,dirvento,precipitacao,pressaoatm,radsolacum,tempar,umidrel,velvento'变量用于构建SELECT中存储的语句。result..比如:SELECT Datahora, column1, column2, column3FROM myTableWHERE id=20ORDER BY Datahora;现在,我的函数返回以下语句text..我复制粘贴并在...
with_query_name [ ( column_name [, ...] ) ] AS [ [ NOT ] MATERIALIZED ] ( {select | values | insert | update | delete} ) The specified query source from_item is as follows: {[ ONLY ] table_name [ * ] [ partition_clause ] [ [ AS ] alias [ ( column_alias [, ...]...
Hi there, Spring Boot: 3.0.1 Database: postgres 14 I am seeing an issue after updating from Spring Boot 2.7x to Spring Boot 3.0.1. I am raising this issue here as I think the issue lies within Spring Data JPA after some debugging, specif...
In the example above, we combine two tables usingINNER JOINto get a result-set that displays the first and last name columns from one table and the payment amount from another table. The two tables are joined together by thecustomer_idcolumn, which is the same in both tables. ...
FROM子句中的postgres子查询 SELECT FROM not working,order子句中的未知列 Postgresql,select value from row作为不带null的列名 sql查询select组合select from多个表 在distinct select查询中出现Postgres“missing FROM-子句entry”错误 Postgresql 9.4子查询缺少from子句 Oracle: SELECT value from where子句作为虚拟表 Cr...
当你使用 sequelize.sync() sequelize创建了所有的表,并且有一堆 CREATE TABLE 如你所料的陈述。但是还有一堆 SELECT 像这样的陈述: SELECT i.relname AS name, ix.indisprimary AS primary, ix.indisunique AS unique, ix.indkey AS indkey, array_agg(a.attnum) AS column_indexes, array_agg(...
The select into statement allows you to select data from the database and assign it to a variable. Here’s the basic syntax of the select into statement: select column1, column2, ... into variable1, variable2, ... from table_expression; In this syntax, First, specify one or more co...