Sql count how many times a value appears

• 0 vote118 views1 answer

  Mysql insert with foreign key

  SQL
• 0 vote147 views1 answer

  Sql count null as 0

  SQL
• 2 votes202 views2 answers

  Postgres drop column if exists

  SQL
• 6 votes139 views3 answers

  Error Code: 1055. Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'mydb.term.year' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

  SQL
• 5 votes203 views1 answer

  Dbms_metadata.get_ddl table

  SQL
• 0 vote215 views1 answer

  Sqlite schema structure of a relational database

  SQL
• 1 vote155 views1 answer

  Postgresql define pk sequence next number

  SQL
• 6 votes143 views2 answers

  Mysql concatenate two columns into one

  SQL
• 0 vote150 views1 answer

  Soql update query

  SQL
• 53 votes367 views6 answers

  Sql server alter column

  SQL