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Tag: statement

What is the priority of multiple JOIN statements in SQLITE?

To my surprise, the following two queries returned different results:

SELECT *
FROM foo
JOIN bar
ON bar.id=foo.bar_id
JOIN baz
ON baz.id=foo.baz_id
LEFT JOIN zig
ON zig.foo_id=foo.id;

September 22, 2021By Simo Sqlite JOIN, middle, multiple, priority, SQLITE, statement, whatLeave a Comment

Switch DELETE and LIKE in the SQLite statement

I tried to merge the two into a single statement, and I would even be satisfied with two separate statements… I know it must be possible, but how?

This is what I tried:

DELETE FROM my

September 22, 2021By Simo Sqlite delete, medley, SQLITE, statementLeave a Comment

PostgreSQL common statement

postgres=# create database mydb;
CREATE DATABASE

postgres=# alter database mydb;
ALTER DATABASE

postgres=# create table mydbtable(name varchar(80),year int);
CREATE TABLE

postgre

September 21, 2021By Simo Postgresql common, PostgreSQL, statementLeave a Comment

EFCORE Method for performing SQL statements: Fromsql and ExecuteSQLCommand

Preface The methods of executing Sql statements in EFCore are: FromSql and ExecuteSqlCommand; in EF6, SqlQuery and ExecuteSqlCommand, and FromSql and SqlQuery are very different, and the return val

August 22, 2021By Simo Sql EFCORE, executesqlcommand, execution, fromsql, method, SQL, statementLeave a Comment

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