I have a table with lakhs of rows. Now, suddenly I need to create a varchar column index. Also, I need to perform some operations using that column. But its giving innodb_lock_wait_timeout exceeded …
Tag: sql
ORACLE ALIAS in WHERE Clause Subquery
Here is my SQL code. I used subquery and labeled it, but when I call column from that subquery, it shows that as invalid identifier. error as per below Please help me to sort out this issue. I need to call subquery’s columns also in my final SQL view. Answer You can only use colums that are in your FROM
SAS datastep/SQL select latest record from multiple records with same ID
For example I have a dataset as below: By datastep or sql, how could I get the record with id = 1 and latest Date 2002/01/01? Help is appreciated and thanks in advance. Answer Try this sql.
sqlite insert into table select * from
I need to move data from one table to another in my Android app I would like to use the following sql: Unfortunately in table MYTABLE2 there is an _ID column AUTOINCREMENT. What could I do? Thanks. EDIT: this is my MYTABLE2 the, the table I would like to populate with data from another table: Answer explicitl…
Formula to get date field in Excel sheet SQL Server query
I have data in Excel sheet and I need to update SQL Server DB table by using Excel sheet data, I am able to write SQL Server Query and get the data. However I am not getting date field in date format, it’s rendered as a normal number. Answer In cell B2 try this –
How do I process data in Multivalued Column in Oracle PLSQL?
I am working on creating a small database in Oracle for a project at work. One of the columns will need to have multiple values recorded in it. What’s the query to create a multivalued column?
The job failed. The job was invoked by user. The last step to run was step1
I have created SSIS package which is running successfully and dumping the data to the required place. But the same package results in the error when i run it through job. I googled n got these links but failed to get the way out- http://social.msdn.microsoft.com/Forums/en-US/sqltools/thread/9034bdc4-24fd-4d80…
Get highest ids in by an inner join and max id
I got two tables, conversations and messages, What I’d like to do is to make a inner join from conversations to messages. Here is my query: SELECT messages.msg, messages.`read`, …
How to return rows that have the same column values in MySql
Lets consider the following table- I am a total SQL noob but how do I return the Scores featuring both IDs 2 and 4? So it should return 100 since its featured in both ID 2 and 4 Answer This is an example of a “sets-within-sets” query. I recommend aggregation with the having clause, because it is t…
SQL query to find the highest paid salary for each lanauges
As I am not expert in writing the SQL queries so want for help. I have a table called programmer whose structure & data look like: In prof1 data are: PASCAL,CLIPPER,COBOL,CPP,COBOL,PASCAL,ASSEMBLY,PASCAL,BASIC,C,PASCAL,FOXPRO. In prof2 data are: BASIC,COBOL,DBASE,DBASE,ORACLE,DBASE,CLIPPER,C,DBASE,COBOL,A…