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- INTRODUCTION(ERROR) 3/30/81 INTRODUCTION(ERROR)
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- NAME
- Error messages introduction
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- DESCRIPTION
- This document describes the error returns which are possible
- from the INGRES data base system and gives an explanation of
- the probable reason for their occurrence. In all cases the
- errors are numbered _n_x_x_x where _n indicates the source of the
- error, according to the following table:
-
- 1 = EQUEL preprocessor
- 2 = parser
- 3 = query modification
- 4 = decomposition and one variable query processor
- 5 = data base utilities
-
- For a description of these routines the reader is referred
- to _T_h_e _D_e_s_i_g_n _a_n_d _I_m_p_l_e_m_e_n_t_a_t_i_o_n _o_f _I_N_G_R_E_S. The _x_x_x in an
- error number is an arbitrary identifier.
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- The error messages are stored in the file
- .../_f_i_l_e_s/_e_r_r_o_r_7__n, where _n is defined as above. The format
- of these files is the error number, a tab character, the
- message to be printed, and the tilde character (``~'') to
- delimit the message.
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- In addition many error messages have ``%_i'' in their body
- where _i is a digit interpreted as an offset into a list of
- parameters returned by the source of the error. This indi-
- cates that a parameter will be inserted by the error handler
- into the error return. In most cases this parameter will be
- self explanatory in meaning.
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- Where the error message is thought to be completely self ex-
- planatory, no additional description is provided.
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