Question : I want to look for all the records that occur on specific dates. SELECT * FROM table1 WHERE […]
Tag: condition
return field name and number of rows which meet condition in one sentence
Question : I have a table in postgres with 10 fields, and need to check for certain values in 3 […]
How to conditionally raise an error in MySQL without stored procedure
Question : I need to conditionally raise an error, but I can only use a simple statement and no stored […]
Does the “don’t use errors for flow control” axiom apply to postgres?
Question : In traditional programming there is an axiom that states, “do not use errors for flow control”. A general […]
Invert a Boolean expression which can return UNKNOWN
Question : Example I have a table ID myField ———— 1 someValue 2 NULL 3 someOtherValue and a T-SQL Boolean […]
How to export mysql database based on a where condition
Question : I need to export the data and structure of a table but the data must have a specific […]
Multiple statement conditions using OR AND within the query
Question : I have this survey table and I’m trying to gather the information of userid who answer Strongly agree […]
Oracle conditional statements
Question : I am making a report, and I am trying to do following: If the value of the field […]
In where clause, does MySQL continue checking conditions if first condition before AND falsy
Question : I have a question about and AND inside a where clause of a query. Within the where clause, […]
mysql table replication on just some records?
Question : I have a big database which contain a table with about 26 million records. Now i need to […]