Question

I have a table in SQL Server 2008 R2 that holds “positions” for different companies.

I have a function GET_KEY that creates a position number by performing a SELECT MAX over the table. [I can not use Identity Increment because the position number needs to be the first available number for a particular company]

SELECT @v_position_no = max(POSITION_NO) + 0.01 
FROM POSITIONS WHERE COMPANY_NO = @p_company_no 

I have a function that copies a position COPY_POS.

I want to copy an existing position twice, but to assign each position an appropriate position number.

I run GET_KEY, then COPY_POS, then GET_KEY, then COPY_POS

However, the positions table locks. I am almost positive (and it is logical) that this is because there a conflict between GET_KEY and COPY_POS. [The problem only occurs if I try and do GET_KEY and COPY_POS twice in succession]

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What I tried…

1. I tried encasing each of GET_KEY and COPY_POS in a BEGIN TRAN and COMMIT TRAN, but this didn’t work.

2. The entire stored procedure is contained in a BEGIN TRY and END TRY and I tried removing this, but this also didn’t work…

Does anyone have any ideas?

Thank you!

Answer 1

Simply add a WITH (nolock) to the Select statement!

SELECT @v_position_no = max(POSITION_NO) + 0.01 
FROM POSITIONS WITH (nolock) WHERE COMPANY_NO = @p_company_no